{ "version": 3, "sources": ["../../../node_modules/@rails/actioncable/src/adapters.js", "../../../node_modules/@rails/actioncable/src/logger.js", "../../../node_modules/@rails/actioncable/src/connection_monitor.js", "../../../node_modules/@rails/actioncable/src/internal.js", "../../../node_modules/@rails/actioncable/src/connection.js", "../../../node_modules/@rails/actioncable/src/subscription.js", "../../../node_modules/@rails/actioncable/src/subscription_guarantor.js", "../../../node_modules/@rails/actioncable/src/subscriptions.js", "../../../node_modules/@rails/actioncable/src/consumer.js", "../../../node_modules/@rails/actioncable/src/index.js", "../../../node_modules/fast-diff/diff.js", "../../../node_modules/lodash.clonedeep/index.js", "../../../node_modules/lodash.isequal/index.js", "../../../node_modules/quill-delta/src/AttributeMap.ts", "../../../node_modules/quill-delta/src/Op.ts", "../../../node_modules/quill-delta/src/OpIterator.ts", "../../../node_modules/quill-delta/src/Delta.ts", "../../../node_modules/eventemitter3/index.js", "../../../node_modules/@hotwired/turbo/dist/turbo.es2017-esm.js", "../../../node_modules/@hotwired/turbo-rails/app/javascript/turbo/cable.js", "../../../node_modules/@hotwired/turbo-rails/app/javascript/turbo/snakeize.js", "../../../node_modules/@hotwired/turbo-rails/app/javascript/turbo/cable_stream_source_element.js", "../../../node_modules/@hotwired/turbo-rails/app/javascript/turbo/fetch_requests.js", "../../../node_modules/@hotwired/turbo-rails/app/javascript/turbo/index.js", "../../../node_modules/@hotwired/stimulus/dist/stimulus.js", "../../javascript/controllers/application.js", "../../../node_modules/lodash-es/_freeGlobal.js", "../../../node_modules/lodash-es/_root.js", "../../../node_modules/lodash-es/_Symbol.js", "../../../node_modules/lodash-es/_getRawTag.js", "../../../node_modules/lodash-es/_objectToString.js", "../../../node_modules/lodash-es/_baseGetTag.js", "../../../node_modules/lodash-es/isObjectLike.js", "../../../node_modules/lodash-es/isArray.js", "../../../node_modules/lodash-es/isObject.js", "../../../node_modules/lodash-es/identity.js", "../../../node_modules/lodash-es/isFunction.js", "../../../node_modules/lodash-es/_coreJsData.js", "../../../node_modules/lodash-es/_isMasked.js", "../../../node_modules/lodash-es/_toSource.js", "../../../node_modules/lodash-es/_baseIsNative.js", "../../../node_modules/lodash-es/_getValue.js", "../../../node_modules/lodash-es/_getNative.js", "../../../node_modules/lodash-es/_WeakMap.js", "../../../node_modules/lodash-es/_baseCreate.js", "../../../node_modules/lodash-es/_apply.js", "../../../node_modules/lodash-es/_copyArray.js", "../../../node_modules/lodash-es/_shortOut.js", "../../../node_modules/lodash-es/constant.js", "../../../node_modules/lodash-es/_defineProperty.js", "../../../node_modules/lodash-es/_baseSetToString.js", "../../../node_modules/lodash-es/_setToString.js", "../../../node_modules/lodash-es/_arrayEach.js", "../../../node_modules/lodash-es/_isIndex.js", "../../../node_modules/lodash-es/_baseAssignValue.js", "../../../node_modules/lodash-es/eq.js", "../../../node_modules/lodash-es/_assignValue.js", "../../../node_modules/lodash-es/_copyObject.js", "../../../node_modules/lodash-es/_overRest.js", "../../../node_modules/lodash-es/_baseRest.js", "../../../node_modules/lodash-es/isLength.js", "../../../node_modules/lodash-es/isArrayLike.js", "../../../node_modules/lodash-es/_isIterateeCall.js", "../../../node_modules/lodash-es/_createAssigner.js", "../../../node_modules/lodash-es/_isPrototype.js", "../../../node_modules/lodash-es/_baseTimes.js", "../../../node_modules/lodash-es/_baseIsArguments.js", "../../../node_modules/lodash-es/isArguments.js", "../../../node_modules/lodash-es/stubFalse.js", "../../../node_modules/lodash-es/isBuffer.js", "../../../node_modules/lodash-es/_baseIsTypedArray.js", "../../../node_modules/lodash-es/_baseUnary.js", "../../../node_modules/lodash-es/_nodeUtil.js", "../../../node_modules/lodash-es/isTypedArray.js", "../../../node_modules/lodash-es/_arrayLikeKeys.js", "../../../node_modules/lodash-es/_overArg.js", "../../../node_modules/lodash-es/_nativeKeys.js", "../../../node_modules/lodash-es/_baseKeys.js", "../../../node_modules/lodash-es/keys.js", "../../../node_modules/lodash-es/_nativeKeysIn.js", "../../../node_modules/lodash-es/_baseKeysIn.js", "../../../node_modules/lodash-es/keysIn.js", "../../../node_modules/lodash-es/_nativeCreate.js", "../../../node_modules/lodash-es/_hashClear.js", "../../../node_modules/lodash-es/_hashDelete.js", "../../../node_modules/lodash-es/_hashGet.js", "../../../node_modules/lodash-es/_hashHas.js", "../../../node_modules/lodash-es/_hashSet.js", "../../../node_modules/lodash-es/_Hash.js", "../../../node_modules/lodash-es/_listCacheClear.js", "../../../node_modules/lodash-es/_assocIndexOf.js", "../../../node_modules/lodash-es/_listCacheDelete.js", "../../../node_modules/lodash-es/_listCacheGet.js", "../../../node_modules/lodash-es/_listCacheHas.js", "../../../node_modules/lodash-es/_listCacheSet.js", "../../../node_modules/lodash-es/_ListCache.js", "../../../node_modules/lodash-es/_Map.js", "../../../node_modules/lodash-es/_mapCacheClear.js", "../../../node_modules/lodash-es/_isKeyable.js", "../../../node_modules/lodash-es/_getMapData.js", "../../../node_modules/lodash-es/_mapCacheDelete.js", "../../../node_modules/lodash-es/_mapCacheGet.js", "../../../node_modules/lodash-es/_mapCacheHas.js", "../../../node_modules/lodash-es/_mapCacheSet.js", "../../../node_modules/lodash-es/_MapCache.js", "../../../node_modules/lodash-es/_arrayPush.js", "../../../node_modules/lodash-es/_getPrototype.js", "../../../node_modules/lodash-es/isPlainObject.js", "../../../node_modules/lodash-es/_stackClear.js", "../../../node_modules/lodash-es/_stackDelete.js", "../../../node_modules/lodash-es/_stackGet.js", "../../../node_modules/lodash-es/_stackHas.js", "../../../node_modules/lodash-es/_stackSet.js", "../../../node_modules/lodash-es/_Stack.js", "../../../node_modules/lodash-es/_baseAssign.js", "../../../node_modules/lodash-es/_baseAssignIn.js", "../../../node_modules/lodash-es/_cloneBuffer.js", "../../../node_modules/lodash-es/_arrayFilter.js", "../../../node_modules/lodash-es/stubArray.js", "../../../node_modules/lodash-es/_getSymbols.js", "../../../node_modules/lodash-es/_copySymbols.js", "../../../node_modules/lodash-es/_getSymbolsIn.js", "../../../node_modules/lodash-es/_copySymbolsIn.js", "../../../node_modules/lodash-es/_baseGetAllKeys.js", "../../../node_modules/lodash-es/_getAllKeys.js", "../../../node_modules/lodash-es/_getAllKeysIn.js", "../../../node_modules/lodash-es/_DataView.js", "../../../node_modules/lodash-es/_Promise.js", "../../../node_modules/lodash-es/_Set.js", "../../../node_modules/lodash-es/_getTag.js", "../../../node_modules/lodash-es/_initCloneArray.js", "../../../node_modules/lodash-es/_Uint8Array.js", "../../../node_modules/lodash-es/_cloneArrayBuffer.js", "../../../node_modules/lodash-es/_cloneDataView.js", "../../../node_modules/lodash-es/_cloneRegExp.js", "../../../node_modules/lodash-es/_cloneSymbol.js", "../../../node_modules/lodash-es/_cloneTypedArray.js", "../../../node_modules/lodash-es/_initCloneByTag.js", "../../../node_modules/lodash-es/_initCloneObject.js", "../../../node_modules/lodash-es/_baseIsMap.js", "../../../node_modules/lodash-es/isMap.js", "../../../node_modules/lodash-es/_baseIsSet.js", "../../../node_modules/lodash-es/isSet.js", "../../../node_modules/lodash-es/_baseClone.js", "../../../node_modules/lodash-es/cloneDeep.js", "../../../node_modules/lodash-es/_setCacheAdd.js", "../../../node_modules/lodash-es/_setCacheHas.js", "../../../node_modules/lodash-es/_SetCache.js", "../../../node_modules/lodash-es/_arraySome.js", "../../../node_modules/lodash-es/_cacheHas.js", "../../../node_modules/lodash-es/_equalArrays.js", "../../../node_modules/lodash-es/_mapToArray.js", "../../../node_modules/lodash-es/_setToArray.js", "../../../node_modules/lodash-es/_equalByTag.js", "../../../node_modules/lodash-es/_equalObjects.js", "../../../node_modules/lodash-es/_baseIsEqualDeep.js", "../../../node_modules/lodash-es/_baseIsEqual.js", "../../../node_modules/lodash-es/_createBaseFor.js", "../../../node_modules/lodash-es/_baseFor.js", "../../../node_modules/lodash-es/_assignMergeValue.js", "../../../node_modules/lodash-es/isArrayLikeObject.js", "../../../node_modules/lodash-es/_safeGet.js", "../../../node_modules/lodash-es/toPlainObject.js", "../../../node_modules/lodash-es/_baseMergeDeep.js", "../../../node_modules/lodash-es/_baseMerge.js", "../../../node_modules/lodash-es/isEqual.js", "../../../node_modules/lodash-es/merge.js", "../../../node_modules/parchment/src/scope.ts", "../../../node_modules/parchment/src/attributor/attributor.ts", "../../../node_modules/parchment/src/error.ts", "../../../node_modules/parchment/src/registry.ts", "../../../node_modules/parchment/src/attributor/class.ts", "../../../node_modules/parchment/src/attributor/style.ts", "../../../node_modules/parchment/src/attributor/store.ts", "../../../node_modules/parchment/src/blot/abstract/shadow.ts", "../../../node_modules/parchment/src/blot/abstract/leaf.ts", "../../../node_modules/parchment/src/collection/linked-list.ts", "../../../node_modules/parchment/src/blot/abstract/parent.ts", "../../../node_modules/parchment/src/blot/inline.ts", "../../../node_modules/parchment/src/blot/block.ts", "../../../node_modules/parchment/src/blot/abstract/container.ts", "../../../node_modules/parchment/src/blot/embed.ts", "../../../node_modules/parchment/src/blot/scroll.ts", "../../../node_modules/parchment/src/blot/text.ts", "../../../node_modules/src/core/quill.ts", "../../../node_modules/src/core/editor.ts", "../../../node_modules/src/blots/block.ts", "../../../node_modules/src/blots/break.ts", "../../../node_modules/src/blots/text.ts", "../../../node_modules/src/blots/inline.ts", "../../../node_modules/src/blots/cursor.ts", "../../../node_modules/eventemitter3/index.mjs", "../../../node_modules/src/core/instances.ts", "../../../node_modules/src/core/logger.ts", "../../../node_modules/src/core/emitter.ts", "../../../node_modules/src/core/selection.ts", "../../../node_modules/src/core/module.ts", "../../../node_modules/src/blots/embed.ts", "../../../node_modules/src/core/composition.ts", "../../../node_modules/src/core/theme.ts", "../../../node_modules/src/core/utils/scrollRectIntoView.ts", "../../../node_modules/src/core/utils/createRegistryWithFormats.ts", "../../../node_modules/src/blots/container.ts", "../../../node_modules/src/blots/scroll.ts", "../../../node_modules/src/modules/clipboard.ts", "../../../node_modules/src/formats/align.ts", "../../../node_modules/src/formats/color.ts", "../../../node_modules/src/formats/background.ts", "../../../node_modules/src/formats/code.ts", "../../../node_modules/src/formats/direction.ts", "../../../node_modules/src/formats/font.ts", "../../../node_modules/src/formats/size.ts", "../../../node_modules/src/modules/keyboard.ts", "../../../node_modules/src/modules/normalizeExternalHTML/normalizers/googleDocs.ts", "../../../node_modules/src/modules/normalizeExternalHTML/normalizers/msWord.ts", "../../../node_modules/src/modules/normalizeExternalHTML/index.ts", "../../../node_modules/src/modules/history.ts", "../../../node_modules/src/modules/uploader.ts", "../../../node_modules/src/core.ts", "../../../node_modules/src/modules/input.ts", "../../../node_modules/src/modules/uiNode.ts", "../../../node_modules/src/formats/indent.ts", "../../../node_modules/src/formats/blockquote.ts", "../../../node_modules/src/formats/header.ts", "../../../node_modules/src/formats/list.ts", "../../../node_modules/src/formats/bold.ts", "../../../node_modules/src/formats/italic.ts", "../../../node_modules/src/formats/link.ts", "../../../node_modules/src/formats/script.ts", "../../../node_modules/src/formats/strike.ts", "../../../node_modules/src/formats/underline.ts", "../../../node_modules/src/formats/formula.ts", "../../../node_modules/src/formats/image.ts", "../../../node_modules/src/formats/video.ts", "../../../node_modules/src/modules/syntax.ts", "../../../node_modules/src/modules/table.ts", "../../../node_modules/src/formats/table.ts", "../../../node_modules/src/modules/toolbar.ts", "../../../node_modules/src/ui/icons.ts", "../../../node_modules/src/ui/picker.ts", "../../../node_modules/src/ui/color-picker.ts", "../../../node_modules/src/ui/icon-picker.ts", "../../../node_modules/src/ui/tooltip.ts", "../../../node_modules/src/themes/base.ts", "../../../node_modules/src/themes/bubble.ts", "../../../node_modules/src/themes/snow.ts", "../../../node_modules/src/quill.ts", "../../javascript/controllers/quill_controller.js", "../../javascript/controllers/toggle_controller.js", "../../javascript/controllers/mobile_menu_controller.js", "../../javascript/controllers/faq_controller.js", "../../javascript/controllers/index.js"], "sourcesContent": ["export default {\n logger: typeof console !== \"undefined\" ? console : undefined,\n WebSocket: typeof WebSocket !== \"undefined\" ? WebSocket : undefined,\n}\n", "import adapters from \"./adapters\"\n\n// The logger is disabled by default. You can enable it with:\n//\n// ActionCable.logger.enabled = true\n//\n// Example:\n//\n// import * as ActionCable from '@rails/actioncable'\n//\n// ActionCable.logger.enabled = true\n// ActionCable.logger.log('Connection Established.')\n//\n\nexport default {\n log(...messages) {\n if (this.enabled) {\n messages.push(Date.now())\n adapters.logger.log(\"[ActionCable]\", ...messages)\n }\n },\n}\n", "import logger from \"./logger\"\n\n// Responsible for ensuring the cable connection is in good health by validating the heartbeat pings sent from the server, and attempting\n// revival reconnections if things go astray. Internal class, not intended for direct user manipulation.\n\nconst now = () => new Date().getTime()\n\nconst secondsSince = time => (now() - time) / 1000\n\nclass ConnectionMonitor {\n constructor(connection) {\n this.visibilityDidChange = this.visibilityDidChange.bind(this)\n this.connection = connection\n this.reconnectAttempts = 0\n }\n\n start() {\n if (!this.isRunning()) {\n this.startedAt = now()\n delete this.stoppedAt\n this.startPolling()\n addEventListener(\"visibilitychange\", this.visibilityDidChange)\n logger.log(`ConnectionMonitor started. stale threshold = ${this.constructor.staleThreshold} s`)\n }\n }\n\n stop() {\n if (this.isRunning()) {\n this.stoppedAt = now()\n this.stopPolling()\n removeEventListener(\"visibilitychange\", this.visibilityDidChange)\n logger.log(\"ConnectionMonitor stopped\")\n }\n }\n\n isRunning() {\n return this.startedAt && !this.stoppedAt\n }\n\n recordMessage() {\n this.pingedAt = now()\n }\n\n recordConnect() {\n this.reconnectAttempts = 0\n delete this.disconnectedAt\n logger.log(\"ConnectionMonitor recorded connect\")\n }\n\n recordDisconnect() {\n this.disconnectedAt = now()\n logger.log(\"ConnectionMonitor recorded disconnect\")\n }\n\n // Private\n\n startPolling() {\n this.stopPolling()\n this.poll()\n }\n\n stopPolling() {\n clearTimeout(this.pollTimeout)\n }\n\n poll() {\n this.pollTimeout = setTimeout(() => {\n this.reconnectIfStale()\n this.poll()\n }\n , this.getPollInterval())\n }\n\n getPollInterval() {\n const { staleThreshold, reconnectionBackoffRate } = this.constructor\n const backoff = Math.pow(1 + reconnectionBackoffRate, Math.min(this.reconnectAttempts, 10))\n const jitterMax = this.reconnectAttempts === 0 ? 1.0 : reconnectionBackoffRate\n const jitter = jitterMax * Math.random()\n return staleThreshold * 1000 * backoff * (1 + jitter)\n }\n\n reconnectIfStale() {\n if (this.connectionIsStale()) {\n logger.log(`ConnectionMonitor detected stale connection. reconnectAttempts = ${this.reconnectAttempts}, time stale = ${secondsSince(this.refreshedAt)} s, stale threshold = ${this.constructor.staleThreshold} s`)\n this.reconnectAttempts++\n if (this.disconnectedRecently()) {\n logger.log(`ConnectionMonitor skipping reopening recent disconnect. time disconnected = ${secondsSince(this.disconnectedAt)} s`)\n } else {\n logger.log(\"ConnectionMonitor reopening\")\n this.connection.reopen()\n }\n }\n }\n\n get refreshedAt() {\n return this.pingedAt ? this.pingedAt : this.startedAt\n }\n\n connectionIsStale() {\n return secondsSince(this.refreshedAt) > this.constructor.staleThreshold\n }\n\n disconnectedRecently() {\n return this.disconnectedAt && (secondsSince(this.disconnectedAt) < this.constructor.staleThreshold)\n }\n\n visibilityDidChange() {\n if (document.visibilityState === \"visible\") {\n setTimeout(() => {\n if (this.connectionIsStale() || !this.connection.isOpen()) {\n logger.log(`ConnectionMonitor reopening stale connection on visibilitychange. visibilityState = ${document.visibilityState}`)\n this.connection.reopen()\n }\n }\n , 200)\n }\n }\n\n}\n\nConnectionMonitor.staleThreshold = 6 // Server::Connections::BEAT_INTERVAL * 2 (missed two pings)\nConnectionMonitor.reconnectionBackoffRate = 0.15\n\nexport default ConnectionMonitor\n", "export default {\n \"message_types\": {\n \"welcome\": \"welcome\",\n \"disconnect\": \"disconnect\",\n \"ping\": \"ping\",\n \"confirmation\": \"confirm_subscription\",\n \"rejection\": \"reject_subscription\"\n },\n \"disconnect_reasons\": {\n \"unauthorized\": \"unauthorized\",\n \"invalid_request\": \"invalid_request\",\n \"server_restart\": \"server_restart\",\n \"remote\": \"remote\"\n },\n \"default_mount_path\": \"/cable\",\n \"protocols\": [\n \"actioncable-v1-json\",\n \"actioncable-unsupported\"\n ]\n}\n", "import adapters from \"./adapters\"\nimport ConnectionMonitor from \"./connection_monitor\"\nimport INTERNAL from \"./internal\"\nimport logger from \"./logger\"\n\n// Encapsulate the cable connection held by the consumer. This is an internal class not intended for direct user manipulation.\n\nconst {message_types, protocols} = INTERNAL\nconst supportedProtocols = protocols.slice(0, protocols.length - 1)\n\nconst indexOf = [].indexOf\n\nclass Connection {\n constructor(consumer) {\n this.open = this.open.bind(this)\n this.consumer = consumer\n this.subscriptions = this.consumer.subscriptions\n this.monitor = new ConnectionMonitor(this)\n this.disconnected = true\n }\n\n send(data) {\n if (this.isOpen()) {\n this.webSocket.send(JSON.stringify(data))\n return true\n } else {\n return false\n }\n }\n\n open() {\n if (this.isActive()) {\n logger.log(`Attempted to open WebSocket, but existing socket is ${this.getState()}`)\n return false\n } else {\n const socketProtocols = [...protocols, ...this.consumer.subprotocols || []]\n logger.log(`Opening WebSocket, current state is ${this.getState()}, subprotocols: ${socketProtocols}`)\n if (this.webSocket) { this.uninstallEventHandlers() }\n this.webSocket = new adapters.WebSocket(this.consumer.url, socketProtocols)\n this.installEventHandlers()\n this.monitor.start()\n return true\n }\n }\n\n close({allowReconnect} = {allowReconnect: true}) {\n if (!allowReconnect) { this.monitor.stop() }\n // Avoid closing websockets in a \"connecting\" state due to Safari 15.1+ bug. See: https://github.com/rails/rails/issues/43835#issuecomment-1002288478\n if (this.isOpen()) {\n return this.webSocket.close()\n }\n }\n\n reopen() {\n logger.log(`Reopening WebSocket, current state is ${this.getState()}`)\n if (this.isActive()) {\n try {\n return this.close()\n } catch (error) {\n logger.log(\"Failed to reopen WebSocket\", error)\n }\n finally {\n logger.log(`Reopening WebSocket in ${this.constructor.reopenDelay}ms`)\n setTimeout(this.open, this.constructor.reopenDelay)\n }\n } else {\n return this.open()\n }\n }\n\n getProtocol() {\n if (this.webSocket) {\n return this.webSocket.protocol\n }\n }\n\n isOpen() {\n return this.isState(\"open\")\n }\n\n isActive() {\n return this.isState(\"open\", \"connecting\")\n }\n\n triedToReconnect() {\n return this.monitor.reconnectAttempts > 0\n }\n\n // Private\n\n isProtocolSupported() {\n return indexOf.call(supportedProtocols, this.getProtocol()) >= 0\n }\n\n isState(...states) {\n return indexOf.call(states, this.getState()) >= 0\n }\n\n getState() {\n if (this.webSocket) {\n for (let state in adapters.WebSocket) {\n if (adapters.WebSocket[state] === this.webSocket.readyState) {\n return state.toLowerCase()\n }\n }\n }\n return null\n }\n\n installEventHandlers() {\n for (let eventName in this.events) {\n const handler = this.events[eventName].bind(this)\n this.webSocket[`on${eventName}`] = handler\n }\n }\n\n uninstallEventHandlers() {\n for (let eventName in this.events) {\n this.webSocket[`on${eventName}`] = function() {}\n }\n }\n\n}\n\nConnection.reopenDelay = 500\n\nConnection.prototype.events = {\n message(event) {\n if (!this.isProtocolSupported()) { return }\n const {identifier, message, reason, reconnect, type} = JSON.parse(event.data)\n this.monitor.recordMessage()\n switch (type) {\n case message_types.welcome:\n if (this.triedToReconnect()) {\n this.reconnectAttempted = true\n }\n this.monitor.recordConnect()\n return this.subscriptions.reload()\n case message_types.disconnect:\n logger.log(`Disconnecting. Reason: ${reason}`)\n return this.close({allowReconnect: reconnect})\n case message_types.ping:\n return null\n case message_types.confirmation:\n this.subscriptions.confirmSubscription(identifier)\n if (this.reconnectAttempted) {\n this.reconnectAttempted = false\n return this.subscriptions.notify(identifier, \"connected\", {reconnected: true})\n } else {\n return this.subscriptions.notify(identifier, \"connected\", {reconnected: false})\n }\n case message_types.rejection:\n return this.subscriptions.reject(identifier)\n default:\n return this.subscriptions.notify(identifier, \"received\", message)\n }\n },\n\n open() {\n logger.log(`WebSocket onopen event, using '${this.getProtocol()}' subprotocol`)\n this.disconnected = false\n if (!this.isProtocolSupported()) {\n logger.log(\"Protocol is unsupported. Stopping monitor and disconnecting.\")\n return this.close({allowReconnect: false})\n }\n },\n\n close(event) {\n logger.log(\"WebSocket onclose event\")\n if (this.disconnected) { return }\n this.disconnected = true\n this.monitor.recordDisconnect()\n return this.subscriptions.notifyAll(\"disconnected\", {willAttemptReconnect: this.monitor.isRunning()})\n },\n\n error() {\n logger.log(\"WebSocket onerror event\")\n }\n}\n\nexport default Connection\n", "// A new subscription is created through the ActionCable.Subscriptions instance available on the consumer.\n// It provides a number of callbacks and a method for calling remote procedure calls on the corresponding\n// Channel instance on the server side.\n//\n// An example demonstrates the basic functionality:\n//\n// App.appearance = App.cable.subscriptions.create(\"AppearanceChannel\", {\n// connected() {\n// // Called once the subscription has been successfully completed\n// },\n//\n// disconnected({ willAttemptReconnect: boolean }) {\n// // Called when the client has disconnected with the server.\n// // The object will have an `willAttemptReconnect` property which\n// // says whether the client has the intention of attempting\n// // to reconnect.\n// },\n//\n// appear() {\n// this.perform('appear', {appearing_on: this.appearingOn()})\n// },\n//\n// away() {\n// this.perform('away')\n// },\n//\n// appearingOn() {\n// $('main').data('appearing-on')\n// }\n// })\n//\n// The methods #appear and #away forward their intent to the remote AppearanceChannel instance on the server\n// by calling the `perform` method with the first parameter being the action (which maps to AppearanceChannel#appear/away).\n// The second parameter is a hash that'll get JSON encoded and made available on the server in the data parameter.\n//\n// This is how the server component would look:\n//\n// class AppearanceChannel < ApplicationActionCable::Channel\n// def subscribed\n// current_user.appear\n// end\n//\n// def unsubscribed\n// current_user.disappear\n// end\n//\n// def appear(data)\n// current_user.appear on: data['appearing_on']\n// end\n//\n// def away\n// current_user.away\n// end\n// end\n//\n// The \"AppearanceChannel\" name is automatically mapped between the client-side subscription creation and the server-side Ruby class name.\n// The AppearanceChannel#appear/away public methods are exposed automatically to client-side invocation through the perform method.\n\nconst extend = function(object, properties) {\n if (properties != null) {\n for (let key in properties) {\n const value = properties[key]\n object[key] = value\n }\n }\n return object\n}\n\nexport default class Subscription {\n constructor(consumer, params = {}, mixin) {\n this.consumer = consumer\n this.identifier = JSON.stringify(params)\n extend(this, mixin)\n }\n\n // Perform a channel action with the optional data passed as an attribute\n perform(action, data = {}) {\n data.action = action\n return this.send(data)\n }\n\n send(data) {\n return this.consumer.send({command: \"message\", identifier: this.identifier, data: JSON.stringify(data)})\n }\n\n unsubscribe() {\n return this.consumer.subscriptions.remove(this)\n }\n}\n", "import logger from \"./logger\"\n\n// Responsible for ensuring channel subscribe command is confirmed, retrying until confirmation is received.\n// Internal class, not intended for direct user manipulation.\n\nclass SubscriptionGuarantor {\n constructor(subscriptions) {\n this.subscriptions = subscriptions\n this.pendingSubscriptions = []\n }\n\n guarantee(subscription) {\n if(this.pendingSubscriptions.indexOf(subscription) == -1){ \n logger.log(`SubscriptionGuarantor guaranteeing ${subscription.identifier}`)\n this.pendingSubscriptions.push(subscription) \n }\n else {\n logger.log(`SubscriptionGuarantor already guaranteeing ${subscription.identifier}`)\n }\n this.startGuaranteeing()\n }\n\n forget(subscription) {\n logger.log(`SubscriptionGuarantor forgetting ${subscription.identifier}`)\n this.pendingSubscriptions = (this.pendingSubscriptions.filter((s) => s !== subscription))\n }\n\n startGuaranteeing() {\n this.stopGuaranteeing()\n this.retrySubscribing()\n }\n \n stopGuaranteeing() {\n clearTimeout(this.retryTimeout)\n }\n\n retrySubscribing() {\n this.retryTimeout = setTimeout(() => {\n if (this.subscriptions && typeof(this.subscriptions.subscribe) === \"function\") {\n this.pendingSubscriptions.map((subscription) => {\n logger.log(`SubscriptionGuarantor resubscribing ${subscription.identifier}`)\n this.subscriptions.subscribe(subscription)\n })\n }\n }\n , 500)\n }\n}\n\nexport default SubscriptionGuarantor", "import Subscription from \"./subscription\"\nimport SubscriptionGuarantor from \"./subscription_guarantor\"\nimport logger from \"./logger\"\n\n// Collection class for creating (and internally managing) channel subscriptions.\n// The only method intended to be triggered by the user is ActionCable.Subscriptions#create,\n// and it should be called through the consumer like so:\n//\n// App = {}\n// App.cable = ActionCable.createConsumer(\"ws://example.com/accounts/1\")\n// App.appearance = App.cable.subscriptions.create(\"AppearanceChannel\")\n//\n// For more details on how you'd configure an actual channel subscription, see ActionCable.Subscription.\n\nexport default class Subscriptions {\n constructor(consumer) {\n this.consumer = consumer\n this.guarantor = new SubscriptionGuarantor(this)\n this.subscriptions = []\n }\n\n create(channelName, mixin) {\n const channel = channelName\n const params = typeof channel === \"object\" ? channel : {channel}\n const subscription = new Subscription(this.consumer, params, mixin)\n return this.add(subscription)\n }\n\n // Private\n\n add(subscription) {\n this.subscriptions.push(subscription)\n this.consumer.ensureActiveConnection()\n this.notify(subscription, \"initialized\")\n this.subscribe(subscription)\n return subscription\n }\n\n remove(subscription) {\n this.forget(subscription)\n if (!this.findAll(subscription.identifier).length) {\n this.sendCommand(subscription, \"unsubscribe\")\n }\n return subscription\n }\n\n reject(identifier) {\n return this.findAll(identifier).map((subscription) => {\n this.forget(subscription)\n this.notify(subscription, \"rejected\")\n return subscription\n })\n }\n\n forget(subscription) {\n this.guarantor.forget(subscription)\n this.subscriptions = (this.subscriptions.filter((s) => s !== subscription))\n return subscription\n }\n\n findAll(identifier) {\n return this.subscriptions.filter((s) => s.identifier === identifier)\n }\n\n reload() {\n return this.subscriptions.map((subscription) =>\n this.subscribe(subscription))\n }\n\n notifyAll(callbackName, ...args) {\n return this.subscriptions.map((subscription) =>\n this.notify(subscription, callbackName, ...args))\n }\n\n notify(subscription, callbackName, ...args) {\n let subscriptions\n if (typeof subscription === \"string\") {\n subscriptions = this.findAll(subscription)\n } else {\n subscriptions = [subscription]\n }\n\n return subscriptions.map((subscription) =>\n (typeof subscription[callbackName] === \"function\" ? subscription[callbackName](...args) : undefined))\n }\n\n subscribe(subscription) {\n if (this.sendCommand(subscription, \"subscribe\")) {\n this.guarantor.guarantee(subscription)\n }\n }\n\n confirmSubscription(identifier) {\n logger.log(`Subscription confirmed ${identifier}`)\n this.findAll(identifier).map((subscription) =>\n this.guarantor.forget(subscription))\n }\n\n sendCommand(subscription, command) {\n const {identifier} = subscription\n return this.consumer.send({command, identifier})\n }\n}\n", "import Connection from \"./connection\"\nimport Subscriptions from \"./subscriptions\"\n\n// The ActionCable.Consumer establishes the connection to a server-side Ruby Connection object. Once established,\n// the ActionCable.ConnectionMonitor will ensure that its properly maintained through heartbeats and checking for stale updates.\n// The Consumer instance is also the gateway to establishing subscriptions to desired channels through the #createSubscription\n// method.\n//\n// The following example shows how this can be set up:\n//\n// App = {}\n// App.cable = ActionCable.createConsumer(\"ws://example.com/accounts/1\")\n// App.appearance = App.cable.subscriptions.create(\"AppearanceChannel\")\n//\n// For more details on how you'd configure an actual channel subscription, see ActionCable.Subscription.\n//\n// When a consumer is created, it automatically connects with the server.\n//\n// To disconnect from the server, call\n//\n// App.cable.disconnect()\n//\n// and to restart the connection:\n//\n// App.cable.connect()\n//\n// Any channel subscriptions which existed prior to disconnecting will\n// automatically resubscribe.\n\nexport default class Consumer {\n constructor(url) {\n this._url = url\n this.subscriptions = new Subscriptions(this)\n this.connection = new Connection(this)\n this.subprotocols = []\n }\n\n get url() {\n return createWebSocketURL(this._url)\n }\n\n send(data) {\n return this.connection.send(data)\n }\n\n connect() {\n return this.connection.open()\n }\n\n disconnect() {\n return this.connection.close({allowReconnect: false})\n }\n\n ensureActiveConnection() {\n if (!this.connection.isActive()) {\n return this.connection.open()\n }\n }\n\n addSubProtocol(subprotocol) {\n this.subprotocols = [...this.subprotocols, subprotocol]\n }\n}\n\nexport function createWebSocketURL(url) {\n if (typeof url === \"function\") {\n url = url()\n }\n\n if (url && !/^wss?:/i.test(url)) {\n const a = document.createElement(\"a\")\n a.href = url\n // Fix populating Location properties in IE. Otherwise, protocol will be blank.\n a.href = a.href\n a.protocol = a.protocol.replace(\"http\", \"ws\")\n return a.href\n } else {\n return url\n }\n}\n", "import Connection from \"./connection\"\nimport ConnectionMonitor from \"./connection_monitor\"\nimport Consumer, { createWebSocketURL } from \"./consumer\"\nimport INTERNAL from \"./internal\"\nimport Subscription from \"./subscription\"\nimport Subscriptions from \"./subscriptions\"\nimport SubscriptionGuarantor from \"./subscription_guarantor\"\nimport adapters from \"./adapters\"\nimport logger from \"./logger\"\n\nexport {\n Connection,\n ConnectionMonitor,\n Consumer,\n INTERNAL,\n Subscription,\n Subscriptions,\n SubscriptionGuarantor,\n adapters,\n createWebSocketURL,\n logger,\n}\n\nexport function createConsumer(url = getConfig(\"url\") || INTERNAL.default_mount_path) {\n return new Consumer(url)\n}\n\nexport function getConfig(name) {\n const element = document.head.querySelector(`meta[name='action-cable-${name}']`)\n if (element) {\n return element.getAttribute(\"content\")\n }\n}\n", "/**\n * This library modifies the diff-patch-match library by Neil Fraser\n * by removing the patch and match functionality and certain advanced\n * options in the diff function. The original license is as follows:\n *\n * ===\n *\n * Diff Match and Patch\n *\n * Copyright 2006 Google Inc.\n * http://code.google.com/p/google-diff-match-patch/\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * The data structure representing a diff is an array of tuples:\n * [[DIFF_DELETE, 'Hello'], [DIFF_INSERT, 'Goodbye'], [DIFF_EQUAL, ' world.']]\n * which means: delete 'Hello', add 'Goodbye' and keep ' world.'\n */\nvar DIFF_DELETE = -1;\nvar DIFF_INSERT = 1;\nvar DIFF_EQUAL = 0;\n\n/**\n * Find the differences between two texts. Simplifies the problem by stripping\n * any common prefix or suffix off the texts before diffing.\n * @param {string} text1 Old string to be diffed.\n * @param {string} text2 New string to be diffed.\n * @param {Int|Object} [cursor_pos] Edit position in text1 or object with more info\n * @param {boolean} [cleanup] Apply semantic cleanup before returning.\n * @return {Array} Array of diff tuples.\n */\nfunction diff_main(text1, text2, cursor_pos, cleanup, _fix_unicode) {\n // Check for equality\n if (text1 === text2) {\n if (text1) {\n return [[DIFF_EQUAL, text1]];\n }\n return [];\n }\n\n if (cursor_pos != null) {\n var editdiff = find_cursor_edit_diff(text1, text2, cursor_pos);\n if (editdiff) {\n return editdiff;\n }\n }\n\n // Trim off common prefix (speedup).\n var commonlength = diff_commonPrefix(text1, text2);\n var commonprefix = text1.substring(0, commonlength);\n text1 = text1.substring(commonlength);\n text2 = text2.substring(commonlength);\n\n // Trim off common suffix (speedup).\n commonlength = diff_commonSuffix(text1, text2);\n var commonsuffix = text1.substring(text1.length - commonlength);\n text1 = text1.substring(0, text1.length - commonlength);\n text2 = text2.substring(0, text2.length - commonlength);\n\n // Compute the diff on the middle block.\n var diffs = diff_compute_(text1, text2);\n\n // Restore the prefix and suffix.\n if (commonprefix) {\n diffs.unshift([DIFF_EQUAL, commonprefix]);\n }\n if (commonsuffix) {\n diffs.push([DIFF_EQUAL, commonsuffix]);\n }\n diff_cleanupMerge(diffs, _fix_unicode);\n if (cleanup) {\n diff_cleanupSemantic(diffs);\n }\n return diffs;\n}\n\n/**\n * Find the differences between two texts. Assumes that the texts do not\n * have any common prefix or suffix.\n * @param {string} text1 Old string to be diffed.\n * @param {string} text2 New string to be diffed.\n * @return {Array} Array of diff tuples.\n */\nfunction diff_compute_(text1, text2) {\n var diffs;\n\n if (!text1) {\n // Just add some text (speedup).\n return [[DIFF_INSERT, text2]];\n }\n\n if (!text2) {\n // Just delete some text (speedup).\n return [[DIFF_DELETE, text1]];\n }\n\n var longtext = text1.length > text2.length ? text1 : text2;\n var shorttext = text1.length > text2.length ? text2 : text1;\n var i = longtext.indexOf(shorttext);\n if (i !== -1) {\n // Shorter text is inside the longer text (speedup).\n diffs = [\n [DIFF_INSERT, longtext.substring(0, i)],\n [DIFF_EQUAL, shorttext],\n [DIFF_INSERT, longtext.substring(i + shorttext.length)],\n ];\n // Swap insertions for deletions if diff is reversed.\n if (text1.length > text2.length) {\n diffs[0][0] = diffs[2][0] = DIFF_DELETE;\n }\n return diffs;\n }\n\n if (shorttext.length === 1) {\n // Single character string.\n // After the previous speedup, the character can't be an equality.\n return [\n [DIFF_DELETE, text1],\n [DIFF_INSERT, text2],\n ];\n }\n\n // Check to see if the problem can be split in two.\n var hm = diff_halfMatch_(text1, text2);\n if (hm) {\n // A half-match was found, sort out the return data.\n var text1_a = hm[0];\n var text1_b = hm[1];\n var text2_a = hm[2];\n var text2_b = hm[3];\n var mid_common = hm[4];\n // Send both pairs off for separate processing.\n var diffs_a = diff_main(text1_a, text2_a);\n var diffs_b = diff_main(text1_b, text2_b);\n // Merge the results.\n return diffs_a.concat([[DIFF_EQUAL, mid_common]], diffs_b);\n }\n\n return diff_bisect_(text1, text2);\n}\n\n/**\n * Find the 'middle snake' of a diff, split the problem in two\n * and return the recursively constructed diff.\n * See Myers 1986 paper: An O(ND) Difference Algorithm and Its Variations.\n * @param {string} text1 Old string to be diffed.\n * @param {string} text2 New string to be diffed.\n * @return {Array} Array of diff tuples.\n * @private\n */\nfunction diff_bisect_(text1, text2) {\n // Cache the text lengths to prevent multiple calls.\n var text1_length = text1.length;\n var text2_length = text2.length;\n var max_d = Math.ceil((text1_length + text2_length) / 2);\n var v_offset = max_d;\n var v_length = 2 * max_d;\n var v1 = new Array(v_length);\n var v2 = new Array(v_length);\n // Setting all elements to -1 is faster in Chrome & Firefox than mixing\n // integers and undefined.\n for (var x = 0; x < v_length; x++) {\n v1[x] = -1;\n v2[x] = -1;\n }\n v1[v_offset + 1] = 0;\n v2[v_offset + 1] = 0;\n var delta = text1_length - text2_length;\n // If the total number of characters is odd, then the front path will collide\n // with the reverse path.\n var front = delta % 2 !== 0;\n // Offsets for start and end of k loop.\n // Prevents mapping of space beyond the grid.\n var k1start = 0;\n var k1end = 0;\n var k2start = 0;\n var k2end = 0;\n for (var d = 0; d < max_d; d++) {\n // Walk the front path one step.\n for (var k1 = -d + k1start; k1 <= d - k1end; k1 += 2) {\n var k1_offset = v_offset + k1;\n var x1;\n if (k1 === -d || (k1 !== d && v1[k1_offset - 1] < v1[k1_offset + 1])) {\n x1 = v1[k1_offset + 1];\n } else {\n x1 = v1[k1_offset - 1] + 1;\n }\n var y1 = x1 - k1;\n while (\n x1 < text1_length &&\n y1 < text2_length &&\n text1.charAt(x1) === text2.charAt(y1)\n ) {\n x1++;\n y1++;\n }\n v1[k1_offset] = x1;\n if (x1 > text1_length) {\n // Ran off the right of the graph.\n k1end += 2;\n } else if (y1 > text2_length) {\n // Ran off the bottom of the graph.\n k1start += 2;\n } else if (front) {\n var k2_offset = v_offset + delta - k1;\n if (k2_offset >= 0 && k2_offset < v_length && v2[k2_offset] !== -1) {\n // Mirror x2 onto top-left coordinate system.\n var x2 = text1_length - v2[k2_offset];\n if (x1 >= x2) {\n // Overlap detected.\n return diff_bisectSplit_(text1, text2, x1, y1);\n }\n }\n }\n }\n\n // Walk the reverse path one step.\n for (var k2 = -d + k2start; k2 <= d - k2end; k2 += 2) {\n var k2_offset = v_offset + k2;\n var x2;\n if (k2 === -d || (k2 !== d && v2[k2_offset - 1] < v2[k2_offset + 1])) {\n x2 = v2[k2_offset + 1];\n } else {\n x2 = v2[k2_offset - 1] + 1;\n }\n var y2 = x2 - k2;\n while (\n x2 < text1_length &&\n y2 < text2_length &&\n text1.charAt(text1_length - x2 - 1) ===\n text2.charAt(text2_length - y2 - 1)\n ) {\n x2++;\n y2++;\n }\n v2[k2_offset] = x2;\n if (x2 > text1_length) {\n // Ran off the left of the graph.\n k2end += 2;\n } else if (y2 > text2_length) {\n // Ran off the top of the graph.\n k2start += 2;\n } else if (!front) {\n var k1_offset = v_offset + delta - k2;\n if (k1_offset >= 0 && k1_offset < v_length && v1[k1_offset] !== -1) {\n var x1 = v1[k1_offset];\n var y1 = v_offset + x1 - k1_offset;\n // Mirror x2 onto top-left coordinate system.\n x2 = text1_length - x2;\n if (x1 >= x2) {\n // Overlap detected.\n return diff_bisectSplit_(text1, text2, x1, y1);\n }\n }\n }\n }\n }\n // Diff took too long and hit the deadline or\n // number of diffs equals number of characters, no commonality at all.\n return [\n [DIFF_DELETE, text1],\n [DIFF_INSERT, text2],\n ];\n}\n\n/**\n * Given the location of the 'middle snake', split the diff in two parts\n * and recurse.\n * @param {string} text1 Old string to be diffed.\n * @param {string} text2 New string to be diffed.\n * @param {number} x Index of split point in text1.\n * @param {number} y Index of split point in text2.\n * @return {Array} Array of diff tuples.\n */\nfunction diff_bisectSplit_(text1, text2, x, y) {\n var text1a = text1.substring(0, x);\n var text2a = text2.substring(0, y);\n var text1b = text1.substring(x);\n var text2b = text2.substring(y);\n\n // Compute both diffs serially.\n var diffs = diff_main(text1a, text2a);\n var diffsb = diff_main(text1b, text2b);\n\n return diffs.concat(diffsb);\n}\n\n/**\n * Determine the common prefix of two strings.\n * @param {string} text1 First string.\n * @param {string} text2 Second string.\n * @return {number} The number of characters common to the start of each\n * string.\n */\nfunction diff_commonPrefix(text1, text2) {\n // Quick check for common null cases.\n if (!text1 || !text2 || text1.charAt(0) !== text2.charAt(0)) {\n return 0;\n }\n // Binary search.\n // Performance analysis: http://neil.fraser.name/news/2007/10/09/\n var pointermin = 0;\n var pointermax = Math.min(text1.length, text2.length);\n var pointermid = pointermax;\n var pointerstart = 0;\n while (pointermin < pointermid) {\n if (\n text1.substring(pointerstart, pointermid) ==\n text2.substring(pointerstart, pointermid)\n ) {\n pointermin = pointermid;\n pointerstart = pointermin;\n } else {\n pointermax = pointermid;\n }\n pointermid = Math.floor((pointermax - pointermin) / 2 + pointermin);\n }\n\n if (is_surrogate_pair_start(text1.charCodeAt(pointermid - 1))) {\n pointermid--;\n }\n\n return pointermid;\n}\n\n/**\n * Determine if the suffix of one string is the prefix of another.\n * @param {string} text1 First string.\n * @param {string} text2 Second string.\n * @return {number} The number of characters common to the end of the first\n * string and the start of the second string.\n * @private\n */\nfunction diff_commonOverlap_(text1, text2) {\n // Cache the text lengths to prevent multiple calls.\n var text1_length = text1.length;\n var text2_length = text2.length;\n // Eliminate the null case.\n if (text1_length == 0 || text2_length == 0) {\n return 0;\n }\n // Truncate the longer string.\n if (text1_length > text2_length) {\n text1 = text1.substring(text1_length - text2_length);\n } else if (text1_length < text2_length) {\n text2 = text2.substring(0, text1_length);\n }\n var text_length = Math.min(text1_length, text2_length);\n // Quick check for the worst case.\n if (text1 == text2) {\n return text_length;\n }\n\n // Start by looking for a single character match\n // and increase length until no match is found.\n // Performance analysis: http://neil.fraser.name/news/2010/11/04/\n var best = 0;\n var length = 1;\n while (true) {\n var pattern = text1.substring(text_length - length);\n var found = text2.indexOf(pattern);\n if (found == -1) {\n return best;\n }\n length += found;\n if (\n found == 0 ||\n text1.substring(text_length - length) == text2.substring(0, length)\n ) {\n best = length;\n length++;\n }\n }\n}\n\n/**\n * Determine the common suffix of two strings.\n * @param {string} text1 First string.\n * @param {string} text2 Second string.\n * @return {number} The number of characters common to the end of each string.\n */\nfunction diff_commonSuffix(text1, text2) {\n // Quick check for common null cases.\n if (!text1 || !text2 || text1.slice(-1) !== text2.slice(-1)) {\n return 0;\n }\n // Binary search.\n // Performance analysis: http://neil.fraser.name/news/2007/10/09/\n var pointermin = 0;\n var pointermax = Math.min(text1.length, text2.length);\n var pointermid = pointermax;\n var pointerend = 0;\n while (pointermin < pointermid) {\n if (\n text1.substring(text1.length - pointermid, text1.length - pointerend) ==\n text2.substring(text2.length - pointermid, text2.length - pointerend)\n ) {\n pointermin = pointermid;\n pointerend = pointermin;\n } else {\n pointermax = pointermid;\n }\n pointermid = Math.floor((pointermax - pointermin) / 2 + pointermin);\n }\n\n if (is_surrogate_pair_end(text1.charCodeAt(text1.length - pointermid))) {\n pointermid--;\n }\n\n return pointermid;\n}\n\n/**\n * Do the two texts share a substring which is at least half the length of the\n * longer text?\n * This speedup can produce non-minimal diffs.\n * @param {string} text1 First string.\n * @param {string} text2 Second string.\n * @return {Array.} Five element Array, containing the prefix of\n * text1, the suffix of text1, the prefix of text2, the suffix of\n * text2 and the common middle. Or null if there was no match.\n */\nfunction diff_halfMatch_(text1, text2) {\n var longtext = text1.length > text2.length ? text1 : text2;\n var shorttext = text1.length > text2.length ? text2 : text1;\n if (longtext.length < 4 || shorttext.length * 2 < longtext.length) {\n return null; // Pointless.\n }\n\n /**\n * Does a substring of shorttext exist within longtext such that the substring\n * is at least half the length of longtext?\n * Closure, but does not reference any external variables.\n * @param {string} longtext Longer string.\n * @param {string} shorttext Shorter string.\n * @param {number} i Start index of quarter length substring within longtext.\n * @return {Array.} Five element Array, containing the prefix of\n * longtext, the suffix of longtext, the prefix of shorttext, the suffix\n * of shorttext and the common middle. Or null if there was no match.\n * @private\n */\n function diff_halfMatchI_(longtext, shorttext, i) {\n // Start with a 1/4 length substring at position i as a seed.\n var seed = longtext.substring(i, i + Math.floor(longtext.length / 4));\n var j = -1;\n var best_common = \"\";\n var best_longtext_a, best_longtext_b, best_shorttext_a, best_shorttext_b;\n while ((j = shorttext.indexOf(seed, j + 1)) !== -1) {\n var prefixLength = diff_commonPrefix(\n longtext.substring(i),\n shorttext.substring(j)\n );\n var suffixLength = diff_commonSuffix(\n longtext.substring(0, i),\n shorttext.substring(0, j)\n );\n if (best_common.length < suffixLength + prefixLength) {\n best_common =\n shorttext.substring(j - suffixLength, j) +\n shorttext.substring(j, j + prefixLength);\n best_longtext_a = longtext.substring(0, i - suffixLength);\n best_longtext_b = longtext.substring(i + prefixLength);\n best_shorttext_a = shorttext.substring(0, j - suffixLength);\n best_shorttext_b = shorttext.substring(j + prefixLength);\n }\n }\n if (best_common.length * 2 >= longtext.length) {\n return [\n best_longtext_a,\n best_longtext_b,\n best_shorttext_a,\n best_shorttext_b,\n best_common,\n ];\n } else {\n return null;\n }\n }\n\n // First check if the second quarter is the seed for a half-match.\n var hm1 = diff_halfMatchI_(\n longtext,\n shorttext,\n Math.ceil(longtext.length / 4)\n );\n // Check again based on the third quarter.\n var hm2 = diff_halfMatchI_(\n longtext,\n shorttext,\n Math.ceil(longtext.length / 2)\n );\n var hm;\n if (!hm1 && !hm2) {\n return null;\n } else if (!hm2) {\n hm = hm1;\n } else if (!hm1) {\n hm = hm2;\n } else {\n // Both matched. Select the longest.\n hm = hm1[4].length > hm2[4].length ? hm1 : hm2;\n }\n\n // A half-match was found, sort out the return data.\n var text1_a, text1_b, text2_a, text2_b;\n if (text1.length > text2.length) {\n text1_a = hm[0];\n text1_b = hm[1];\n text2_a = hm[2];\n text2_b = hm[3];\n } else {\n text2_a = hm[0];\n text2_b = hm[1];\n text1_a = hm[2];\n text1_b = hm[3];\n }\n var mid_common = hm[4];\n return [text1_a, text1_b, text2_a, text2_b, mid_common];\n}\n\n/**\n * Reduce the number of edits by eliminating semantically trivial equalities.\n * @param {!Array.} diffs Array of diff tuples.\n */\nfunction diff_cleanupSemantic(diffs) {\n var changes = false;\n var equalities = []; // Stack of indices where equalities are found.\n var equalitiesLength = 0; // Keeping our own length var is faster in JS.\n /** @type {?string} */\n var lastequality = null;\n // Always equal to diffs[equalities[equalitiesLength - 1]][1]\n var pointer = 0; // Index of current position.\n // Number of characters that changed prior to the equality.\n var length_insertions1 = 0;\n var length_deletions1 = 0;\n // Number of characters that changed after the equality.\n var length_insertions2 = 0;\n var length_deletions2 = 0;\n while (pointer < diffs.length) {\n if (diffs[pointer][0] == DIFF_EQUAL) {\n // Equality found.\n equalities[equalitiesLength++] = pointer;\n length_insertions1 = length_insertions2;\n length_deletions1 = length_deletions2;\n length_insertions2 = 0;\n length_deletions2 = 0;\n lastequality = diffs[pointer][1];\n } else {\n // An insertion or deletion.\n if (diffs[pointer][0] == DIFF_INSERT) {\n length_insertions2 += diffs[pointer][1].length;\n } else {\n length_deletions2 += diffs[pointer][1].length;\n }\n // Eliminate an equality that is smaller or equal to the edits on both\n // sides of it.\n if (\n lastequality &&\n lastequality.length <=\n Math.max(length_insertions1, length_deletions1) &&\n lastequality.length <= Math.max(length_insertions2, length_deletions2)\n ) {\n // Duplicate record.\n diffs.splice(equalities[equalitiesLength - 1], 0, [\n DIFF_DELETE,\n lastequality,\n ]);\n // Change second copy to insert.\n diffs[equalities[equalitiesLength - 1] + 1][0] = DIFF_INSERT;\n // Throw away the equality we just deleted.\n equalitiesLength--;\n // Throw away the previous equality (it needs to be reevaluated).\n equalitiesLength--;\n pointer = equalitiesLength > 0 ? equalities[equalitiesLength - 1] : -1;\n length_insertions1 = 0; // Reset the counters.\n length_deletions1 = 0;\n length_insertions2 = 0;\n length_deletions2 = 0;\n lastequality = null;\n changes = true;\n }\n }\n pointer++;\n }\n\n // Normalize the diff.\n if (changes) {\n diff_cleanupMerge(diffs);\n }\n diff_cleanupSemanticLossless(diffs);\n\n // Find any overlaps between deletions and insertions.\n // e.g: abcxxxxxxdef\n // -> abcxxxdef\n // e.g: xxxabcdefxxx\n // -> defxxxabc\n // Only extract an overlap if it is as big as the edit ahead or behind it.\n pointer = 1;\n while (pointer < diffs.length) {\n if (\n diffs[pointer - 1][0] == DIFF_DELETE &&\n diffs[pointer][0] == DIFF_INSERT\n ) {\n var deletion = diffs[pointer - 1][1];\n var insertion = diffs[pointer][1];\n var overlap_length1 = diff_commonOverlap_(deletion, insertion);\n var overlap_length2 = diff_commonOverlap_(insertion, deletion);\n if (overlap_length1 >= overlap_length2) {\n if (\n overlap_length1 >= deletion.length / 2 ||\n overlap_length1 >= insertion.length / 2\n ) {\n // Overlap found. Insert an equality and trim the surrounding edits.\n diffs.splice(pointer, 0, [\n DIFF_EQUAL,\n insertion.substring(0, overlap_length1),\n ]);\n diffs[pointer - 1][1] = deletion.substring(\n 0,\n deletion.length - overlap_length1\n );\n diffs[pointer + 1][1] = insertion.substring(overlap_length1);\n pointer++;\n }\n } else {\n if (\n overlap_length2 >= deletion.length / 2 ||\n overlap_length2 >= insertion.length / 2\n ) {\n // Reverse overlap found.\n // Insert an equality and swap and trim the surrounding edits.\n diffs.splice(pointer, 0, [\n DIFF_EQUAL,\n deletion.substring(0, overlap_length2),\n ]);\n diffs[pointer - 1][0] = DIFF_INSERT;\n diffs[pointer - 1][1] = insertion.substring(\n 0,\n insertion.length - overlap_length2\n );\n diffs[pointer + 1][0] = DIFF_DELETE;\n diffs[pointer + 1][1] = deletion.substring(overlap_length2);\n pointer++;\n }\n }\n pointer++;\n }\n pointer++;\n }\n}\n\nvar nonAlphaNumericRegex_ = /[^a-zA-Z0-9]/;\nvar whitespaceRegex_ = /\\s/;\nvar linebreakRegex_ = /[\\r\\n]/;\nvar blanklineEndRegex_ = /\\n\\r?\\n$/;\nvar blanklineStartRegex_ = /^\\r?\\n\\r?\\n/;\n\n/**\n * Look for single edits surrounded on both sides by equalities\n * which can be shifted sideways to align the edit to a word boundary.\n * e.g: The cat came. -> The cat came.\n * @param {!Array.} diffs Array of diff tuples.\n */\nfunction diff_cleanupSemanticLossless(diffs) {\n /**\n * Given two strings, compute a score representing whether the internal\n * boundary falls on logical boundaries.\n * Scores range from 6 (best) to 0 (worst).\n * Closure, but does not reference any external variables.\n * @param {string} one First string.\n * @param {string} two Second string.\n * @return {number} The score.\n * @private\n */\n function diff_cleanupSemanticScore_(one, two) {\n if (!one || !two) {\n // Edges are the best.\n return 6;\n }\n\n // Each port of this function behaves slightly differently due to\n // subtle differences in each language's definition of things like\n // 'whitespace'. Since this function's purpose is largely cosmetic,\n // the choice has been made to use each language's native features\n // rather than force total conformity.\n var char1 = one.charAt(one.length - 1);\n var char2 = two.charAt(0);\n var nonAlphaNumeric1 = char1.match(nonAlphaNumericRegex_);\n var nonAlphaNumeric2 = char2.match(nonAlphaNumericRegex_);\n var whitespace1 = nonAlphaNumeric1 && char1.match(whitespaceRegex_);\n var whitespace2 = nonAlphaNumeric2 && char2.match(whitespaceRegex_);\n var lineBreak1 = whitespace1 && char1.match(linebreakRegex_);\n var lineBreak2 = whitespace2 && char2.match(linebreakRegex_);\n var blankLine1 = lineBreak1 && one.match(blanklineEndRegex_);\n var blankLine2 = lineBreak2 && two.match(blanklineStartRegex_);\n\n if (blankLine1 || blankLine2) {\n // Five points for blank lines.\n return 5;\n } else if (lineBreak1 || lineBreak2) {\n // Four points for line breaks.\n return 4;\n } else if (nonAlphaNumeric1 && !whitespace1 && whitespace2) {\n // Three points for end of sentences.\n return 3;\n } else if (whitespace1 || whitespace2) {\n // Two points for whitespace.\n return 2;\n } else if (nonAlphaNumeric1 || nonAlphaNumeric2) {\n // One point for non-alphanumeric.\n return 1;\n }\n return 0;\n }\n\n var pointer = 1;\n // Intentionally ignore the first and last element (don't need checking).\n while (pointer < diffs.length - 1) {\n if (\n diffs[pointer - 1][0] == DIFF_EQUAL &&\n diffs[pointer + 1][0] == DIFF_EQUAL\n ) {\n // This is a single edit surrounded by equalities.\n var equality1 = diffs[pointer - 1][1];\n var edit = diffs[pointer][1];\n var equality2 = diffs[pointer + 1][1];\n\n // First, shift the edit as far left as possible.\n var commonOffset = diff_commonSuffix(equality1, edit);\n if (commonOffset) {\n var commonString = edit.substring(edit.length - commonOffset);\n equality1 = equality1.substring(0, equality1.length - commonOffset);\n edit = commonString + edit.substring(0, edit.length - commonOffset);\n equality2 = commonString + equality2;\n }\n\n // Second, step character by character right, looking for the best fit.\n var bestEquality1 = equality1;\n var bestEdit = edit;\n var bestEquality2 = equality2;\n var bestScore =\n diff_cleanupSemanticScore_(equality1, edit) +\n diff_cleanupSemanticScore_(edit, equality2);\n while (edit.charAt(0) === equality2.charAt(0)) {\n equality1 += edit.charAt(0);\n edit = edit.substring(1) + equality2.charAt(0);\n equality2 = equality2.substring(1);\n var score =\n diff_cleanupSemanticScore_(equality1, edit) +\n diff_cleanupSemanticScore_(edit, equality2);\n // The >= encourages trailing rather than leading whitespace on edits.\n if (score >= bestScore) {\n bestScore = score;\n bestEquality1 = equality1;\n bestEdit = edit;\n bestEquality2 = equality2;\n }\n }\n\n if (diffs[pointer - 1][1] != bestEquality1) {\n // We have an improvement, save it back to the diff.\n if (bestEquality1) {\n diffs[pointer - 1][1] = bestEquality1;\n } else {\n diffs.splice(pointer - 1, 1);\n pointer--;\n }\n diffs[pointer][1] = bestEdit;\n if (bestEquality2) {\n diffs[pointer + 1][1] = bestEquality2;\n } else {\n diffs.splice(pointer + 1, 1);\n pointer--;\n }\n }\n }\n pointer++;\n }\n}\n\n/**\n * Reorder and merge like edit sections. Merge equalities.\n * Any edit section can move as long as it doesn't cross an equality.\n * @param {Array} diffs Array of diff tuples.\n * @param {boolean} fix_unicode Whether to normalize to a unicode-correct diff\n */\nfunction diff_cleanupMerge(diffs, fix_unicode) {\n diffs.push([DIFF_EQUAL, \"\"]); // Add a dummy entry at the end.\n var pointer = 0;\n var count_delete = 0;\n var count_insert = 0;\n var text_delete = \"\";\n var text_insert = \"\";\n var commonlength;\n while (pointer < diffs.length) {\n if (pointer < diffs.length - 1 && !diffs[pointer][1]) {\n diffs.splice(pointer, 1);\n continue;\n }\n switch (diffs[pointer][0]) {\n case DIFF_INSERT:\n count_insert++;\n text_insert += diffs[pointer][1];\n pointer++;\n break;\n case DIFF_DELETE:\n count_delete++;\n text_delete += diffs[pointer][1];\n pointer++;\n break;\n case DIFF_EQUAL:\n var previous_equality = pointer - count_insert - count_delete - 1;\n if (fix_unicode) {\n // prevent splitting of unicode surrogate pairs. when fix_unicode is true,\n // we assume that the old and new text in the diff are complete and correct\n // unicode-encoded JS strings, but the tuple boundaries may fall between\n // surrogate pairs. we fix this by shaving off stray surrogates from the end\n // of the previous equality and the beginning of this equality. this may create\n // empty equalities or a common prefix or suffix. for example, if AB and AC are\n // emojis, `[[0, 'A'], [-1, 'BA'], [0, 'C']]` would turn into deleting 'ABAC' and\n // inserting 'AC', and then the common suffix 'AC' will be eliminated. in this\n // particular case, both equalities go away, we absorb any previous inequalities,\n // and we keep scanning for the next equality before rewriting the tuples.\n if (\n previous_equality >= 0 &&\n ends_with_pair_start(diffs[previous_equality][1])\n ) {\n var stray = diffs[previous_equality][1].slice(-1);\n diffs[previous_equality][1] = diffs[previous_equality][1].slice(\n 0,\n -1\n );\n text_delete = stray + text_delete;\n text_insert = stray + text_insert;\n if (!diffs[previous_equality][1]) {\n // emptied out previous equality, so delete it and include previous delete/insert\n diffs.splice(previous_equality, 1);\n pointer--;\n var k = previous_equality - 1;\n if (diffs[k] && diffs[k][0] === DIFF_INSERT) {\n count_insert++;\n text_insert = diffs[k][1] + text_insert;\n k--;\n }\n if (diffs[k] && diffs[k][0] === DIFF_DELETE) {\n count_delete++;\n text_delete = diffs[k][1] + text_delete;\n k--;\n }\n previous_equality = k;\n }\n }\n if (starts_with_pair_end(diffs[pointer][1])) {\n var stray = diffs[pointer][1].charAt(0);\n diffs[pointer][1] = diffs[pointer][1].slice(1);\n text_delete += stray;\n text_insert += stray;\n }\n }\n if (pointer < diffs.length - 1 && !diffs[pointer][1]) {\n // for empty equality not at end, wait for next equality\n diffs.splice(pointer, 1);\n break;\n }\n if (text_delete.length > 0 || text_insert.length > 0) {\n // note that diff_commonPrefix and diff_commonSuffix are unicode-aware\n if (text_delete.length > 0 && text_insert.length > 0) {\n // Factor out any common prefixes.\n commonlength = diff_commonPrefix(text_insert, text_delete);\n if (commonlength !== 0) {\n if (previous_equality >= 0) {\n diffs[previous_equality][1] += text_insert.substring(\n 0,\n commonlength\n );\n } else {\n diffs.splice(0, 0, [\n DIFF_EQUAL,\n text_insert.substring(0, commonlength),\n ]);\n pointer++;\n }\n text_insert = text_insert.substring(commonlength);\n text_delete = text_delete.substring(commonlength);\n }\n // Factor out any common suffixes.\n commonlength = diff_commonSuffix(text_insert, text_delete);\n if (commonlength !== 0) {\n diffs[pointer][1] =\n text_insert.substring(text_insert.length - commonlength) +\n diffs[pointer][1];\n text_insert = text_insert.substring(\n 0,\n text_insert.length - commonlength\n );\n text_delete = text_delete.substring(\n 0,\n text_delete.length - commonlength\n );\n }\n }\n // Delete the offending records and add the merged ones.\n var n = count_insert + count_delete;\n if (text_delete.length === 0 && text_insert.length === 0) {\n diffs.splice(pointer - n, n);\n pointer = pointer - n;\n } else if (text_delete.length === 0) {\n diffs.splice(pointer - n, n, [DIFF_INSERT, text_insert]);\n pointer = pointer - n + 1;\n } else if (text_insert.length === 0) {\n diffs.splice(pointer - n, n, [DIFF_DELETE, text_delete]);\n pointer = pointer - n + 1;\n } else {\n diffs.splice(\n pointer - n,\n n,\n [DIFF_DELETE, text_delete],\n [DIFF_INSERT, text_insert]\n );\n pointer = pointer - n + 2;\n }\n }\n if (pointer !== 0 && diffs[pointer - 1][0] === DIFF_EQUAL) {\n // Merge this equality with the previous one.\n diffs[pointer - 1][1] += diffs[pointer][1];\n diffs.splice(pointer, 1);\n } else {\n pointer++;\n }\n count_insert = 0;\n count_delete = 0;\n text_delete = \"\";\n text_insert = \"\";\n break;\n }\n }\n if (diffs[diffs.length - 1][1] === \"\") {\n diffs.pop(); // Remove the dummy entry at the end.\n }\n\n // Second pass: look for single edits surrounded on both sides by equalities\n // which can be shifted sideways to eliminate an equality.\n // e.g: ABAC -> ABAC\n var changes = false;\n pointer = 1;\n // Intentionally ignore the first and last element (don't need checking).\n while (pointer < diffs.length - 1) {\n if (\n diffs[pointer - 1][0] === DIFF_EQUAL &&\n diffs[pointer + 1][0] === DIFF_EQUAL\n ) {\n // This is a single edit surrounded by equalities.\n if (\n diffs[pointer][1].substring(\n diffs[pointer][1].length - diffs[pointer - 1][1].length\n ) === diffs[pointer - 1][1]\n ) {\n // Shift the edit over the previous equality.\n diffs[pointer][1] =\n diffs[pointer - 1][1] +\n diffs[pointer][1].substring(\n 0,\n diffs[pointer][1].length - diffs[pointer - 1][1].length\n );\n diffs[pointer + 1][1] = diffs[pointer - 1][1] + diffs[pointer + 1][1];\n diffs.splice(pointer - 1, 1);\n changes = true;\n } else if (\n diffs[pointer][1].substring(0, diffs[pointer + 1][1].length) ==\n diffs[pointer + 1][1]\n ) {\n // Shift the edit over the next equality.\n diffs[pointer - 1][1] += diffs[pointer + 1][1];\n diffs[pointer][1] =\n diffs[pointer][1].substring(diffs[pointer + 1][1].length) +\n diffs[pointer + 1][1];\n diffs.splice(pointer + 1, 1);\n changes = true;\n }\n }\n pointer++;\n }\n // If shifts were made, the diff needs reordering and another shift sweep.\n if (changes) {\n diff_cleanupMerge(diffs, fix_unicode);\n }\n}\n\nfunction is_surrogate_pair_start(charCode) {\n return charCode >= 0xd800 && charCode <= 0xdbff;\n}\n\nfunction is_surrogate_pair_end(charCode) {\n return charCode >= 0xdc00 && charCode <= 0xdfff;\n}\n\nfunction starts_with_pair_end(str) {\n return is_surrogate_pair_end(str.charCodeAt(0));\n}\n\nfunction ends_with_pair_start(str) {\n return is_surrogate_pair_start(str.charCodeAt(str.length - 1));\n}\n\nfunction remove_empty_tuples(tuples) {\n var ret = [];\n for (var i = 0; i < tuples.length; i++) {\n if (tuples[i][1].length > 0) {\n ret.push(tuples[i]);\n }\n }\n return ret;\n}\n\nfunction make_edit_splice(before, oldMiddle, newMiddle, after) {\n if (ends_with_pair_start(before) || starts_with_pair_end(after)) {\n return null;\n }\n return remove_empty_tuples([\n [DIFF_EQUAL, before],\n [DIFF_DELETE, oldMiddle],\n [DIFF_INSERT, newMiddle],\n [DIFF_EQUAL, after],\n ]);\n}\n\nfunction find_cursor_edit_diff(oldText, newText, cursor_pos) {\n // note: this runs after equality check has ruled out exact equality\n var oldRange =\n typeof cursor_pos === \"number\"\n ? { index: cursor_pos, length: 0 }\n : cursor_pos.oldRange;\n var newRange = typeof cursor_pos === \"number\" ? null : cursor_pos.newRange;\n // take into account the old and new selection to generate the best diff\n // possible for a text edit. for example, a text change from \"xxx\" to \"xx\"\n // could be a delete or forwards-delete of any one of the x's, or the\n // result of selecting two of the x's and typing \"x\".\n var oldLength = oldText.length;\n var newLength = newText.length;\n if (oldRange.length === 0 && (newRange === null || newRange.length === 0)) {\n // see if we have an insert or delete before or after cursor\n var oldCursor = oldRange.index;\n var oldBefore = oldText.slice(0, oldCursor);\n var oldAfter = oldText.slice(oldCursor);\n var maybeNewCursor = newRange ? newRange.index : null;\n editBefore: {\n // is this an insert or delete right before oldCursor?\n var newCursor = oldCursor + newLength - oldLength;\n if (maybeNewCursor !== null && maybeNewCursor !== newCursor) {\n break editBefore;\n }\n if (newCursor < 0 || newCursor > newLength) {\n break editBefore;\n }\n var newBefore = newText.slice(0, newCursor);\n var newAfter = newText.slice(newCursor);\n if (newAfter !== oldAfter) {\n break editBefore;\n }\n var prefixLength = Math.min(oldCursor, newCursor);\n var oldPrefix = oldBefore.slice(0, prefixLength);\n var newPrefix = newBefore.slice(0, prefixLength);\n if (oldPrefix !== newPrefix) {\n break editBefore;\n }\n var oldMiddle = oldBefore.slice(prefixLength);\n var newMiddle = newBefore.slice(prefixLength);\n return make_edit_splice(oldPrefix, oldMiddle, newMiddle, oldAfter);\n }\n editAfter: {\n // is this an insert or delete right after oldCursor?\n if (maybeNewCursor !== null && maybeNewCursor !== oldCursor) {\n break editAfter;\n }\n var cursor = oldCursor;\n var newBefore = newText.slice(0, cursor);\n var newAfter = newText.slice(cursor);\n if (newBefore !== oldBefore) {\n break editAfter;\n }\n var suffixLength = Math.min(oldLength - cursor, newLength - cursor);\n var oldSuffix = oldAfter.slice(oldAfter.length - suffixLength);\n var newSuffix = newAfter.slice(newAfter.length - suffixLength);\n if (oldSuffix !== newSuffix) {\n break editAfter;\n }\n var oldMiddle = oldAfter.slice(0, oldAfter.length - suffixLength);\n var newMiddle = newAfter.slice(0, newAfter.length - suffixLength);\n return make_edit_splice(oldBefore, oldMiddle, newMiddle, oldSuffix);\n }\n }\n if (oldRange.length > 0 && newRange && newRange.length === 0) {\n replaceRange: {\n // see if diff could be a splice of the old selection range\n var oldPrefix = oldText.slice(0, oldRange.index);\n var oldSuffix = oldText.slice(oldRange.index + oldRange.length);\n var prefixLength = oldPrefix.length;\n var suffixLength = oldSuffix.length;\n if (newLength < prefixLength + suffixLength) {\n break replaceRange;\n }\n var newPrefix = newText.slice(0, prefixLength);\n var newSuffix = newText.slice(newLength - suffixLength);\n if (oldPrefix !== newPrefix || oldSuffix !== newSuffix) {\n break replaceRange;\n }\n var oldMiddle = oldText.slice(prefixLength, oldLength - suffixLength);\n var newMiddle = newText.slice(prefixLength, newLength - suffixLength);\n return make_edit_splice(oldPrefix, oldMiddle, newMiddle, oldSuffix);\n }\n }\n\n return null;\n}\n\nfunction diff(text1, text2, cursor_pos, cleanup) {\n // only pass fix_unicode=true at the top level, not when diff_main is\n // recursively invoked\n return diff_main(text1, text2, cursor_pos, cleanup, true);\n}\n\ndiff.INSERT = DIFF_INSERT;\ndiff.DELETE = DIFF_DELETE;\ndiff.EQUAL = DIFF_EQUAL;\n\nmodule.exports = diff;\n", "/**\n * lodash (Custom Build) \n * Build: `lodash modularize exports=\"npm\" -o ./`\n * Copyright jQuery Foundation and other contributors \n * Released under MIT license \n * Based on Underscore.js 1.8.3 \n * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors\n */\n\n/** Used as the size to enable large array optimizations. */\nvar LARGE_ARRAY_SIZE = 200;\n\n/** Used to stand-in for `undefined` hash values. */\nvar HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n/** Used as references for various `Number` constants. */\nvar MAX_SAFE_INTEGER = 9007199254740991;\n\n/** `Object#toString` result references. */\nvar argsTag = '[object Arguments]',\n arrayTag = '[object Array]',\n boolTag = '[object Boolean]',\n dateTag = '[object Date]',\n errorTag = '[object Error]',\n funcTag = '[object Function]',\n genTag = '[object GeneratorFunction]',\n mapTag = '[object Map]',\n numberTag = '[object Number]',\n objectTag = '[object Object]',\n promiseTag = '[object Promise]',\n regexpTag = '[object RegExp]',\n setTag = '[object Set]',\n stringTag = '[object String]',\n symbolTag = '[object Symbol]',\n weakMapTag = '[object WeakMap]';\n\nvar arrayBufferTag = '[object ArrayBuffer]',\n dataViewTag = '[object DataView]',\n float32Tag = '[object Float32Array]',\n float64Tag = '[object Float64Array]',\n int8Tag = '[object Int8Array]',\n int16Tag = '[object Int16Array]',\n int32Tag = '[object Int32Array]',\n uint8Tag = '[object Uint8Array]',\n uint8ClampedTag = '[object Uint8ClampedArray]',\n uint16Tag = '[object Uint16Array]',\n uint32Tag = '[object Uint32Array]';\n\n/**\n * Used to match `RegExp`\n * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).\n */\nvar reRegExpChar = /[\\\\^$.*+?()[\\]{}|]/g;\n\n/** Used to match `RegExp` flags from their coerced string values. */\nvar reFlags = /\\w*$/;\n\n/** Used to detect host constructors (Safari). */\nvar reIsHostCtor = /^\\[object .+?Constructor\\]$/;\n\n/** Used to detect unsigned integer values. */\nvar reIsUint = /^(?:0|[1-9]\\d*)$/;\n\n/** Used to identify `toStringTag` values supported by `_.clone`. */\nvar cloneableTags = {};\ncloneableTags[argsTag] = cloneableTags[arrayTag] =\ncloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] =\ncloneableTags[boolTag] = cloneableTags[dateTag] =\ncloneableTags[float32Tag] = cloneableTags[float64Tag] =\ncloneableTags[int8Tag] = cloneableTags[int16Tag] =\ncloneableTags[int32Tag] = cloneableTags[mapTag] =\ncloneableTags[numberTag] = cloneableTags[objectTag] =\ncloneableTags[regexpTag] = cloneableTags[setTag] =\ncloneableTags[stringTag] = cloneableTags[symbolTag] =\ncloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =\ncloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;\ncloneableTags[errorTag] = cloneableTags[funcTag] =\ncloneableTags[weakMapTag] = false;\n\n/** Detect free variable `global` from Node.js. */\nvar freeGlobal = typeof global == 'object' && global && global.Object === Object && global;\n\n/** Detect free variable `self`. */\nvar freeSelf = typeof self == 'object' && self && self.Object === Object && self;\n\n/** Used as a reference to the global object. */\nvar root = freeGlobal || freeSelf || Function('return this')();\n\n/** Detect free variable `exports`. */\nvar freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;\n\n/** Detect free variable `module`. */\nvar freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;\n\n/** Detect the popular CommonJS extension `module.exports`. */\nvar moduleExports = freeModule && freeModule.exports === freeExports;\n\n/**\n * Adds the key-value `pair` to `map`.\n *\n * @private\n * @param {Object} map The map to modify.\n * @param {Array} pair The key-value pair to add.\n * @returns {Object} Returns `map`.\n */\nfunction addMapEntry(map, pair) {\n // Don't return `map.set` because it's not chainable in IE 11.\n map.set(pair[0], pair[1]);\n return map;\n}\n\n/**\n * Adds `value` to `set`.\n *\n * @private\n * @param {Object} set The set to modify.\n * @param {*} value The value to add.\n * @returns {Object} Returns `set`.\n */\nfunction addSetEntry(set, value) {\n // Don't return `set.add` because it's not chainable in IE 11.\n set.add(value);\n return set;\n}\n\n/**\n * A specialized version of `_.forEach` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns `array`.\n */\nfunction arrayEach(array, iteratee) {\n var index = -1,\n length = array ? array.length : 0;\n\n while (++index < length) {\n if (iteratee(array[index], index, array) === false) {\n break;\n }\n }\n return array;\n}\n\n/**\n * Appends the elements of `values` to `array`.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {Array} values The values to append.\n * @returns {Array} Returns `array`.\n */\nfunction arrayPush(array, values) {\n var index = -1,\n length = values.length,\n offset = array.length;\n\n while (++index < length) {\n array[offset + index] = values[index];\n }\n return array;\n}\n\n/**\n * A specialized version of `_.reduce` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @param {boolean} [initAccum] Specify using the first element of `array` as\n * the initial value.\n * @returns {*} Returns the accumulated value.\n */\nfunction arrayReduce(array, iteratee, accumulator, initAccum) {\n var index = -1,\n length = array ? array.length : 0;\n\n if (initAccum && length) {\n accumulator = array[++index];\n }\n while (++index < length) {\n accumulator = iteratee(accumulator, array[index], index, array);\n }\n return accumulator;\n}\n\n/**\n * The base implementation of `_.times` without support for iteratee shorthands\n * or max array length checks.\n *\n * @private\n * @param {number} n The number of times to invoke `iteratee`.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the array of results.\n */\nfunction baseTimes(n, iteratee) {\n var index = -1,\n result = Array(n);\n\n while (++index < n) {\n result[index] = iteratee(index);\n }\n return result;\n}\n\n/**\n * Gets the value at `key` of `object`.\n *\n * @private\n * @param {Object} [object] The object to query.\n * @param {string} key The key of the property to get.\n * @returns {*} Returns the property value.\n */\nfunction getValue(object, key) {\n return object == null ? undefined : object[key];\n}\n\n/**\n * Checks if `value` is a host object in IE < 9.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a host object, else `false`.\n */\nfunction isHostObject(value) {\n // Many host objects are `Object` objects that can coerce to strings\n // despite having improperly defined `toString` methods.\n var result = false;\n if (value != null && typeof value.toString != 'function') {\n try {\n result = !!(value + '');\n } catch (e) {}\n }\n return result;\n}\n\n/**\n * Converts `map` to its key-value pairs.\n *\n * @private\n * @param {Object} map The map to convert.\n * @returns {Array} Returns the key-value pairs.\n */\nfunction mapToArray(map) {\n var index = -1,\n result = Array(map.size);\n\n map.forEach(function(value, key) {\n result[++index] = [key, value];\n });\n return result;\n}\n\n/**\n * Creates a unary function that invokes `func` with its argument transformed.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {Function} transform The argument transform.\n * @returns {Function} Returns the new function.\n */\nfunction overArg(func, transform) {\n return function(arg) {\n return func(transform(arg));\n };\n}\n\n/**\n * Converts `set` to an array of its values.\n *\n * @private\n * @param {Object} set The set to convert.\n * @returns {Array} Returns the values.\n */\nfunction setToArray(set) {\n var index = -1,\n result = Array(set.size);\n\n set.forEach(function(value) {\n result[++index] = value;\n });\n return result;\n}\n\n/** Used for built-in method references. */\nvar arrayProto = Array.prototype,\n funcProto = Function.prototype,\n objectProto = Object.prototype;\n\n/** Used to detect overreaching core-js shims. */\nvar coreJsData = root['__core-js_shared__'];\n\n/** Used to detect methods masquerading as native. */\nvar maskSrcKey = (function() {\n var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');\n return uid ? ('Symbol(src)_1.' + uid) : '';\n}());\n\n/** Used to resolve the decompiled source of functions. */\nvar funcToString = funcProto.toString;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar objectToString = objectProto.toString;\n\n/** Used to detect if a method is native. */\nvar reIsNative = RegExp('^' +\n funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\\\$&')\n .replace(/hasOwnProperty|(function).*?(?=\\\\\\()| for .+?(?=\\\\\\])/g, '$1.*?') + '$'\n);\n\n/** Built-in value references. */\nvar Buffer = moduleExports ? root.Buffer : undefined,\n Symbol = root.Symbol,\n Uint8Array = root.Uint8Array,\n getPrototype = overArg(Object.getPrototypeOf, Object),\n objectCreate = Object.create,\n propertyIsEnumerable = objectProto.propertyIsEnumerable,\n splice = arrayProto.splice;\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeGetSymbols = Object.getOwnPropertySymbols,\n nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined,\n nativeKeys = overArg(Object.keys, Object);\n\n/* Built-in method references that are verified to be native. */\nvar DataView = getNative(root, 'DataView'),\n Map = getNative(root, 'Map'),\n Promise = getNative(root, 'Promise'),\n Set = getNative(root, 'Set'),\n WeakMap = getNative(root, 'WeakMap'),\n nativeCreate = getNative(Object, 'create');\n\n/** Used to detect maps, sets, and weakmaps. */\nvar dataViewCtorString = toSource(DataView),\n mapCtorString = toSource(Map),\n promiseCtorString = toSource(Promise),\n setCtorString = toSource(Set),\n weakMapCtorString = toSource(WeakMap);\n\n/** Used to convert symbols to primitives and strings. */\nvar symbolProto = Symbol ? Symbol.prototype : undefined,\n symbolValueOf = symbolProto ? symbolProto.valueOf : undefined;\n\n/**\n * Creates a hash object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction Hash(entries) {\n var index = -1,\n length = entries ? entries.length : 0;\n\n this.clear();\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n}\n\n/**\n * Removes all key-value entries from the hash.\n *\n * @private\n * @name clear\n * @memberOf Hash\n */\nfunction hashClear() {\n this.__data__ = nativeCreate ? nativeCreate(null) : {};\n}\n\n/**\n * Removes `key` and its value from the hash.\n *\n * @private\n * @name delete\n * @memberOf Hash\n * @param {Object} hash The hash to modify.\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction hashDelete(key) {\n return this.has(key) && delete this.__data__[key];\n}\n\n/**\n * Gets the hash value for `key`.\n *\n * @private\n * @name get\n * @memberOf Hash\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction hashGet(key) {\n var data = this.__data__;\n if (nativeCreate) {\n var result = data[key];\n return result === HASH_UNDEFINED ? undefined : result;\n }\n return hasOwnProperty.call(data, key) ? data[key] : undefined;\n}\n\n/**\n * Checks if a hash value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf Hash\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction hashHas(key) {\n var data = this.__data__;\n return nativeCreate ? data[key] !== undefined : hasOwnProperty.call(data, key);\n}\n\n/**\n * Sets the hash `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf Hash\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the hash instance.\n */\nfunction hashSet(key, value) {\n var data = this.__data__;\n data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;\n return this;\n}\n\n// Add methods to `Hash`.\nHash.prototype.clear = hashClear;\nHash.prototype['delete'] = hashDelete;\nHash.prototype.get = hashGet;\nHash.prototype.has = hashHas;\nHash.prototype.set = hashSet;\n\n/**\n * Creates an list cache object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction ListCache(entries) {\n var index = -1,\n length = entries ? entries.length : 0;\n\n this.clear();\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n}\n\n/**\n * Removes all key-value entries from the list cache.\n *\n * @private\n * @name clear\n * @memberOf ListCache\n */\nfunction listCacheClear() {\n this.__data__ = [];\n}\n\n/**\n * Removes `key` and its value from the list cache.\n *\n * @private\n * @name delete\n * @memberOf ListCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction listCacheDelete(key) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n\n if (index < 0) {\n return false;\n }\n var lastIndex = data.length - 1;\n if (index == lastIndex) {\n data.pop();\n } else {\n splice.call(data, index, 1);\n }\n return true;\n}\n\n/**\n * Gets the list cache value for `key`.\n *\n * @private\n * @name get\n * @memberOf ListCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction listCacheGet(key) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n\n return index < 0 ? undefined : data[index][1];\n}\n\n/**\n * Checks if a list cache value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf ListCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction listCacheHas(key) {\n return assocIndexOf(this.__data__, key) > -1;\n}\n\n/**\n * Sets the list cache `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf ListCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the list cache instance.\n */\nfunction listCacheSet(key, value) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n\n if (index < 0) {\n data.push([key, value]);\n } else {\n data[index][1] = value;\n }\n return this;\n}\n\n// Add methods to `ListCache`.\nListCache.prototype.clear = listCacheClear;\nListCache.prototype['delete'] = listCacheDelete;\nListCache.prototype.get = listCacheGet;\nListCache.prototype.has = listCacheHas;\nListCache.prototype.set = listCacheSet;\n\n/**\n * Creates a map cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction MapCache(entries) {\n var index = -1,\n length = entries ? entries.length : 0;\n\n this.clear();\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n}\n\n/**\n * Removes all key-value entries from the map.\n *\n * @private\n * @name clear\n * @memberOf MapCache\n */\nfunction mapCacheClear() {\n this.__data__ = {\n 'hash': new Hash,\n 'map': new (Map || ListCache),\n 'string': new Hash\n };\n}\n\n/**\n * Removes `key` and its value from the map.\n *\n * @private\n * @name delete\n * @memberOf MapCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction mapCacheDelete(key) {\n return getMapData(this, key)['delete'](key);\n}\n\n/**\n * Gets the map value for `key`.\n *\n * @private\n * @name get\n * @memberOf MapCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction mapCacheGet(key) {\n return getMapData(this, key).get(key);\n}\n\n/**\n * Checks if a map value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf MapCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction mapCacheHas(key) {\n return getMapData(this, key).has(key);\n}\n\n/**\n * Sets the map `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf MapCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the map cache instance.\n */\nfunction mapCacheSet(key, value) {\n getMapData(this, key).set(key, value);\n return this;\n}\n\n// Add methods to `MapCache`.\nMapCache.prototype.clear = mapCacheClear;\nMapCache.prototype['delete'] = mapCacheDelete;\nMapCache.prototype.get = mapCacheGet;\nMapCache.prototype.has = mapCacheHas;\nMapCache.prototype.set = mapCacheSet;\n\n/**\n * Creates a stack cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction Stack(entries) {\n this.__data__ = new ListCache(entries);\n}\n\n/**\n * Removes all key-value entries from the stack.\n *\n * @private\n * @name clear\n * @memberOf Stack\n */\nfunction stackClear() {\n this.__data__ = new ListCache;\n}\n\n/**\n * Removes `key` and its value from the stack.\n *\n * @private\n * @name delete\n * @memberOf Stack\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction stackDelete(key) {\n return this.__data__['delete'](key);\n}\n\n/**\n * Gets the stack value for `key`.\n *\n * @private\n * @name get\n * @memberOf Stack\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction stackGet(key) {\n return this.__data__.get(key);\n}\n\n/**\n * Checks if a stack value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf Stack\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction stackHas(key) {\n return this.__data__.has(key);\n}\n\n/**\n * Sets the stack `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf Stack\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the stack cache instance.\n */\nfunction stackSet(key, value) {\n var cache = this.__data__;\n if (cache instanceof ListCache) {\n var pairs = cache.__data__;\n if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {\n pairs.push([key, value]);\n return this;\n }\n cache = this.__data__ = new MapCache(pairs);\n }\n cache.set(key, value);\n return this;\n}\n\n// Add methods to `Stack`.\nStack.prototype.clear = stackClear;\nStack.prototype['delete'] = stackDelete;\nStack.prototype.get = stackGet;\nStack.prototype.has = stackHas;\nStack.prototype.set = stackSet;\n\n/**\n * Creates an array of the enumerable property names of the array-like `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @param {boolean} inherited Specify returning inherited property names.\n * @returns {Array} Returns the array of property names.\n */\nfunction arrayLikeKeys(value, inherited) {\n // Safari 8.1 makes `arguments.callee` enumerable in strict mode.\n // Safari 9 makes `arguments.length` enumerable in strict mode.\n var result = (isArray(value) || isArguments(value))\n ? baseTimes(value.length, String)\n : [];\n\n var length = result.length,\n skipIndexes = !!length;\n\n for (var key in value) {\n if ((inherited || hasOwnProperty.call(value, key)) &&\n !(skipIndexes && (key == 'length' || isIndex(key, length)))) {\n result.push(key);\n }\n }\n return result;\n}\n\n/**\n * Assigns `value` to `key` of `object` if the existing value is not equivalent\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {string} key The key of the property to assign.\n * @param {*} value The value to assign.\n */\nfunction assignValue(object, key, value) {\n var objValue = object[key];\n if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||\n (value === undefined && !(key in object))) {\n object[key] = value;\n }\n}\n\n/**\n * Gets the index at which the `key` is found in `array` of key-value pairs.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} key The key to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\nfunction assocIndexOf(array, key) {\n var length = array.length;\n while (length--) {\n if (eq(array[length][0], key)) {\n return length;\n }\n }\n return -1;\n}\n\n/**\n * The base implementation of `_.assign` without support for multiple sources\n * or `customizer` functions.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @returns {Object} Returns `object`.\n */\nfunction baseAssign(object, source) {\n return object && copyObject(source, keys(source), object);\n}\n\n/**\n * The base implementation of `_.clone` and `_.cloneDeep` which tracks\n * traversed objects.\n *\n * @private\n * @param {*} value The value to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @param {boolean} [isFull] Specify a clone including symbols.\n * @param {Function} [customizer] The function to customize cloning.\n * @param {string} [key] The key of `value`.\n * @param {Object} [object] The parent object of `value`.\n * @param {Object} [stack] Tracks traversed objects and their clone counterparts.\n * @returns {*} Returns the cloned value.\n */\nfunction baseClone(value, isDeep, isFull, customizer, key, object, stack) {\n var result;\n if (customizer) {\n result = object ? customizer(value, key, object, stack) : customizer(value);\n }\n if (result !== undefined) {\n return result;\n }\n if (!isObject(value)) {\n return value;\n }\n var isArr = isArray(value);\n if (isArr) {\n result = initCloneArray(value);\n if (!isDeep) {\n return copyArray(value, result);\n }\n } else {\n var tag = getTag(value),\n isFunc = tag == funcTag || tag == genTag;\n\n if (isBuffer(value)) {\n return cloneBuffer(value, isDeep);\n }\n if (tag == objectTag || tag == argsTag || (isFunc && !object)) {\n if (isHostObject(value)) {\n return object ? value : {};\n }\n result = initCloneObject(isFunc ? {} : value);\n if (!isDeep) {\n return copySymbols(value, baseAssign(result, value));\n }\n } else {\n if (!cloneableTags[tag]) {\n return object ? value : {};\n }\n result = initCloneByTag(value, tag, baseClone, isDeep);\n }\n }\n // Check for circular references and return its corresponding clone.\n stack || (stack = new Stack);\n var stacked = stack.get(value);\n if (stacked) {\n return stacked;\n }\n stack.set(value, result);\n\n if (!isArr) {\n var props = isFull ? getAllKeys(value) : keys(value);\n }\n arrayEach(props || value, function(subValue, key) {\n if (props) {\n key = subValue;\n subValue = value[key];\n }\n // Recursively populate clone (susceptible to call stack limits).\n assignValue(result, key, baseClone(subValue, isDeep, isFull, customizer, key, value, stack));\n });\n return result;\n}\n\n/**\n * The base implementation of `_.create` without support for assigning\n * properties to the created object.\n *\n * @private\n * @param {Object} prototype The object to inherit from.\n * @returns {Object} Returns the new object.\n */\nfunction baseCreate(proto) {\n return isObject(proto) ? objectCreate(proto) : {};\n}\n\n/**\n * The base implementation of `getAllKeys` and `getAllKeysIn` which uses\n * `keysFunc` and `symbolsFunc` to get the enumerable property names and\n * symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Function} keysFunc The function to get the keys of `object`.\n * @param {Function} symbolsFunc The function to get the symbols of `object`.\n * @returns {Array} Returns the array of property names and symbols.\n */\nfunction baseGetAllKeys(object, keysFunc, symbolsFunc) {\n var result = keysFunc(object);\n return isArray(object) ? result : arrayPush(result, symbolsFunc(object));\n}\n\n/**\n * The base implementation of `getTag`.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the `toStringTag`.\n */\nfunction baseGetTag(value) {\n return objectToString.call(value);\n}\n\n/**\n * The base implementation of `_.isNative` without bad shim checks.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a native function,\n * else `false`.\n */\nfunction baseIsNative(value) {\n if (!isObject(value) || isMasked(value)) {\n return false;\n }\n var pattern = (isFunction(value) || isHostObject(value)) ? reIsNative : reIsHostCtor;\n return pattern.test(toSource(value));\n}\n\n/**\n * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\nfunction baseKeys(object) {\n if (!isPrototype(object)) {\n return nativeKeys(object);\n }\n var result = [];\n for (var key in Object(object)) {\n if (hasOwnProperty.call(object, key) && key != 'constructor') {\n result.push(key);\n }\n }\n return result;\n}\n\n/**\n * Creates a clone of `buffer`.\n *\n * @private\n * @param {Buffer} buffer The buffer to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Buffer} Returns the cloned buffer.\n */\nfunction cloneBuffer(buffer, isDeep) {\n if (isDeep) {\n return buffer.slice();\n }\n var result = new buffer.constructor(buffer.length);\n buffer.copy(result);\n return result;\n}\n\n/**\n * Creates a clone of `arrayBuffer`.\n *\n * @private\n * @param {ArrayBuffer} arrayBuffer The array buffer to clone.\n * @returns {ArrayBuffer} Returns the cloned array buffer.\n */\nfunction cloneArrayBuffer(arrayBuffer) {\n var result = new arrayBuffer.constructor(arrayBuffer.byteLength);\n new Uint8Array(result).set(new Uint8Array(arrayBuffer));\n return result;\n}\n\n/**\n * Creates a clone of `dataView`.\n *\n * @private\n * @param {Object} dataView The data view to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned data view.\n */\nfunction cloneDataView(dataView, isDeep) {\n var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;\n return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);\n}\n\n/**\n * Creates a clone of `map`.\n *\n * @private\n * @param {Object} map The map to clone.\n * @param {Function} cloneFunc The function to clone values.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned map.\n */\nfunction cloneMap(map, isDeep, cloneFunc) {\n var array = isDeep ? cloneFunc(mapToArray(map), true) : mapToArray(map);\n return arrayReduce(array, addMapEntry, new map.constructor);\n}\n\n/**\n * Creates a clone of `regexp`.\n *\n * @private\n * @param {Object} regexp The regexp to clone.\n * @returns {Object} Returns the cloned regexp.\n */\nfunction cloneRegExp(regexp) {\n var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));\n result.lastIndex = regexp.lastIndex;\n return result;\n}\n\n/**\n * Creates a clone of `set`.\n *\n * @private\n * @param {Object} set The set to clone.\n * @param {Function} cloneFunc The function to clone values.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned set.\n */\nfunction cloneSet(set, isDeep, cloneFunc) {\n var array = isDeep ? cloneFunc(setToArray(set), true) : setToArray(set);\n return arrayReduce(array, addSetEntry, new set.constructor);\n}\n\n/**\n * Creates a clone of the `symbol` object.\n *\n * @private\n * @param {Object} symbol The symbol object to clone.\n * @returns {Object} Returns the cloned symbol object.\n */\nfunction cloneSymbol(symbol) {\n return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};\n}\n\n/**\n * Creates a clone of `typedArray`.\n *\n * @private\n * @param {Object} typedArray The typed array to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned typed array.\n */\nfunction cloneTypedArray(typedArray, isDeep) {\n var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;\n return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);\n}\n\n/**\n * Copies the values of `source` to `array`.\n *\n * @private\n * @param {Array} source The array to copy values from.\n * @param {Array} [array=[]] The array to copy values to.\n * @returns {Array} Returns `array`.\n */\nfunction copyArray(source, array) {\n var index = -1,\n length = source.length;\n\n array || (array = Array(length));\n while (++index < length) {\n array[index] = source[index];\n }\n return array;\n}\n\n/**\n * Copies properties of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy properties from.\n * @param {Array} props The property identifiers to copy.\n * @param {Object} [object={}] The object to copy properties to.\n * @param {Function} [customizer] The function to customize copied values.\n * @returns {Object} Returns `object`.\n */\nfunction copyObject(source, props, object, customizer) {\n object || (object = {});\n\n var index = -1,\n length = props.length;\n\n while (++index < length) {\n var key = props[index];\n\n var newValue = customizer\n ? customizer(object[key], source[key], key, object, source)\n : undefined;\n\n assignValue(object, key, newValue === undefined ? source[key] : newValue);\n }\n return object;\n}\n\n/**\n * Copies own symbol properties of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy symbols from.\n * @param {Object} [object={}] The object to copy symbols to.\n * @returns {Object} Returns `object`.\n */\nfunction copySymbols(source, object) {\n return copyObject(source, getSymbols(source), object);\n}\n\n/**\n * Creates an array of own enumerable property names and symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names and symbols.\n */\nfunction getAllKeys(object) {\n return baseGetAllKeys(object, keys, getSymbols);\n}\n\n/**\n * Gets the data for `map`.\n *\n * @private\n * @param {Object} map The map to query.\n * @param {string} key The reference key.\n * @returns {*} Returns the map data.\n */\nfunction getMapData(map, key) {\n var data = map.__data__;\n return isKeyable(key)\n ? data[typeof key == 'string' ? 'string' : 'hash']\n : data.map;\n}\n\n/**\n * Gets the native function at `key` of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {string} key The key of the method to get.\n * @returns {*} Returns the function if it's native, else `undefined`.\n */\nfunction getNative(object, key) {\n var value = getValue(object, key);\n return baseIsNative(value) ? value : undefined;\n}\n\n/**\n * Creates an array of the own enumerable symbol properties of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of symbols.\n */\nvar getSymbols = nativeGetSymbols ? overArg(nativeGetSymbols, Object) : stubArray;\n\n/**\n * Gets the `toStringTag` of `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the `toStringTag`.\n */\nvar getTag = baseGetTag;\n\n// Fallback for data views, maps, sets, and weak maps in IE 11,\n// for data views in Edge < 14, and promises in Node.js.\nif ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||\n (Map && getTag(new Map) != mapTag) ||\n (Promise && getTag(Promise.resolve()) != promiseTag) ||\n (Set && getTag(new Set) != setTag) ||\n (WeakMap && getTag(new WeakMap) != weakMapTag)) {\n getTag = function(value) {\n var result = objectToString.call(value),\n Ctor = result == objectTag ? value.constructor : undefined,\n ctorString = Ctor ? toSource(Ctor) : undefined;\n\n if (ctorString) {\n switch (ctorString) {\n case dataViewCtorString: return dataViewTag;\n case mapCtorString: return mapTag;\n case promiseCtorString: return promiseTag;\n case setCtorString: return setTag;\n case weakMapCtorString: return weakMapTag;\n }\n }\n return result;\n };\n}\n\n/**\n * Initializes an array clone.\n *\n * @private\n * @param {Array} array The array to clone.\n * @returns {Array} Returns the initialized clone.\n */\nfunction initCloneArray(array) {\n var length = array.length,\n result = array.constructor(length);\n\n // Add properties assigned by `RegExp#exec`.\n if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {\n result.index = array.index;\n result.input = array.input;\n }\n return result;\n}\n\n/**\n * Initializes an object clone.\n *\n * @private\n * @param {Object} object The object to clone.\n * @returns {Object} Returns the initialized clone.\n */\nfunction initCloneObject(object) {\n return (typeof object.constructor == 'function' && !isPrototype(object))\n ? baseCreate(getPrototype(object))\n : {};\n}\n\n/**\n * Initializes an object clone based on its `toStringTag`.\n *\n * **Note:** This function only supports cloning values with tags of\n * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.\n *\n * @private\n * @param {Object} object The object to clone.\n * @param {string} tag The `toStringTag` of the object to clone.\n * @param {Function} cloneFunc The function to clone values.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the initialized clone.\n */\nfunction initCloneByTag(object, tag, cloneFunc, isDeep) {\n var Ctor = object.constructor;\n switch (tag) {\n case arrayBufferTag:\n return cloneArrayBuffer(object);\n\n case boolTag:\n case dateTag:\n return new Ctor(+object);\n\n case dataViewTag:\n return cloneDataView(object, isDeep);\n\n case float32Tag: case float64Tag:\n case int8Tag: case int16Tag: case int32Tag:\n case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:\n return cloneTypedArray(object, isDeep);\n\n case mapTag:\n return cloneMap(object, isDeep, cloneFunc);\n\n case numberTag:\n case stringTag:\n return new Ctor(object);\n\n case regexpTag:\n return cloneRegExp(object);\n\n case setTag:\n return cloneSet(object, isDeep, cloneFunc);\n\n case symbolTag:\n return cloneSymbol(object);\n }\n}\n\n/**\n * Checks if `value` is a valid array-like index.\n *\n * @private\n * @param {*} value The value to check.\n * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.\n * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.\n */\nfunction isIndex(value, length) {\n length = length == null ? MAX_SAFE_INTEGER : length;\n return !!length &&\n (typeof value == 'number' || reIsUint.test(value)) &&\n (value > -1 && value % 1 == 0 && value < length);\n}\n\n/**\n * Checks if `value` is suitable for use as unique object key.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is suitable, else `false`.\n */\nfunction isKeyable(value) {\n var type = typeof value;\n return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')\n ? (value !== '__proto__')\n : (value === null);\n}\n\n/**\n * Checks if `func` has its source masked.\n *\n * @private\n * @param {Function} func The function to check.\n * @returns {boolean} Returns `true` if `func` is masked, else `false`.\n */\nfunction isMasked(func) {\n return !!maskSrcKey && (maskSrcKey in func);\n}\n\n/**\n * Checks if `value` is likely a prototype object.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.\n */\nfunction isPrototype(value) {\n var Ctor = value && value.constructor,\n proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;\n\n return value === proto;\n}\n\n/**\n * Converts `func` to its source code.\n *\n * @private\n * @param {Function} func The function to process.\n * @returns {string} Returns the source code.\n */\nfunction toSource(func) {\n if (func != null) {\n try {\n return funcToString.call(func);\n } catch (e) {}\n try {\n return (func + '');\n } catch (e) {}\n }\n return '';\n}\n\n/**\n * This method is like `_.clone` except that it recursively clones `value`.\n *\n * @static\n * @memberOf _\n * @since 1.0.0\n * @category Lang\n * @param {*} value The value to recursively clone.\n * @returns {*} Returns the deep cloned value.\n * @see _.clone\n * @example\n *\n * var objects = [{ 'a': 1 }, { 'b': 2 }];\n *\n * var deep = _.cloneDeep(objects);\n * console.log(deep[0] === objects[0]);\n * // => false\n */\nfunction cloneDeep(value) {\n return baseClone(value, true, true);\n}\n\n/**\n * Performs a\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * comparison between two values to determine if they are equivalent.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n * @example\n *\n * var object = { 'a': 1 };\n * var other = { 'a': 1 };\n *\n * _.eq(object, object);\n * // => true\n *\n * _.eq(object, other);\n * // => false\n *\n * _.eq('a', 'a');\n * // => true\n *\n * _.eq('a', Object('a'));\n * // => false\n *\n * _.eq(NaN, NaN);\n * // => true\n */\nfunction eq(value, other) {\n return value === other || (value !== value && other !== other);\n}\n\n/**\n * Checks if `value` is likely an `arguments` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n * else `false`.\n * @example\n *\n * _.isArguments(function() { return arguments; }());\n * // => true\n *\n * _.isArguments([1, 2, 3]);\n * // => false\n */\nfunction isArguments(value) {\n // Safari 8.1 makes `arguments.callee` enumerable in strict mode.\n return isArrayLikeObject(value) && hasOwnProperty.call(value, 'callee') &&\n (!propertyIsEnumerable.call(value, 'callee') || objectToString.call(value) == argsTag);\n}\n\n/**\n * Checks if `value` is classified as an `Array` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array, else `false`.\n * @example\n *\n * _.isArray([1, 2, 3]);\n * // => true\n *\n * _.isArray(document.body.children);\n * // => false\n *\n * _.isArray('abc');\n * // => false\n *\n * _.isArray(_.noop);\n * // => false\n */\nvar isArray = Array.isArray;\n\n/**\n * Checks if `value` is array-like. A value is considered array-like if it's\n * not a function and has a `value.length` that's an integer greater than or\n * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is array-like, else `false`.\n * @example\n *\n * _.isArrayLike([1, 2, 3]);\n * // => true\n *\n * _.isArrayLike(document.body.children);\n * // => true\n *\n * _.isArrayLike('abc');\n * // => true\n *\n * _.isArrayLike(_.noop);\n * // => false\n */\nfunction isArrayLike(value) {\n return value != null && isLength(value.length) && !isFunction(value);\n}\n\n/**\n * This method is like `_.isArrayLike` except that it also checks if `value`\n * is an object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array-like object,\n * else `false`.\n * @example\n *\n * _.isArrayLikeObject([1, 2, 3]);\n * // => true\n *\n * _.isArrayLikeObject(document.body.children);\n * // => true\n *\n * _.isArrayLikeObject('abc');\n * // => false\n *\n * _.isArrayLikeObject(_.noop);\n * // => false\n */\nfunction isArrayLikeObject(value) {\n return isObjectLike(value) && isArrayLike(value);\n}\n\n/**\n * Checks if `value` is a buffer.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.\n * @example\n *\n * _.isBuffer(new Buffer(2));\n * // => true\n *\n * _.isBuffer(new Uint8Array(2));\n * // => false\n */\nvar isBuffer = nativeIsBuffer || stubFalse;\n\n/**\n * Checks if `value` is classified as a `Function` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a function, else `false`.\n * @example\n *\n * _.isFunction(_);\n * // => true\n *\n * _.isFunction(/abc/);\n * // => false\n */\nfunction isFunction(value) {\n // The use of `Object#toString` avoids issues with the `typeof` operator\n // in Safari 8-9 which returns 'object' for typed array and other constructors.\n var tag = isObject(value) ? objectToString.call(value) : '';\n return tag == funcTag || tag == genTag;\n}\n\n/**\n * Checks if `value` is a valid array-like length.\n *\n * **Note:** This method is loosely based on\n * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.\n * @example\n *\n * _.isLength(3);\n * // => true\n *\n * _.isLength(Number.MIN_VALUE);\n * // => false\n *\n * _.isLength(Infinity);\n * // => false\n *\n * _.isLength('3');\n * // => false\n */\nfunction isLength(value) {\n return typeof value == 'number' &&\n value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;\n}\n\n/**\n * Checks if `value` is the\n * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)\n * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an object, else `false`.\n * @example\n *\n * _.isObject({});\n * // => true\n *\n * _.isObject([1, 2, 3]);\n * // => true\n *\n * _.isObject(_.noop);\n * // => true\n *\n * _.isObject(null);\n * // => false\n */\nfunction isObject(value) {\n var type = typeof value;\n return !!value && (type == 'object' || type == 'function');\n}\n\n/**\n * Checks if `value` is object-like. A value is object-like if it's not `null`\n * and has a `typeof` result of \"object\".\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\n * @example\n *\n * _.isObjectLike({});\n * // => true\n *\n * _.isObjectLike([1, 2, 3]);\n * // => true\n *\n * _.isObjectLike(_.noop);\n * // => false\n *\n * _.isObjectLike(null);\n * // => false\n */\nfunction isObjectLike(value) {\n return !!value && typeof value == 'object';\n}\n\n/**\n * Creates an array of the own enumerable property names of `object`.\n *\n * **Note:** Non-object values are coerced to objects. See the\n * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\n * for more details.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.keys(new Foo);\n * // => ['a', 'b'] (iteration order is not guaranteed)\n *\n * _.keys('hi');\n * // => ['0', '1']\n */\nfunction keys(object) {\n return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);\n}\n\n/**\n * This method returns a new empty array.\n *\n * @static\n * @memberOf _\n * @since 4.13.0\n * @category Util\n * @returns {Array} Returns the new empty array.\n * @example\n *\n * var arrays = _.times(2, _.stubArray);\n *\n * console.log(arrays);\n * // => [[], []]\n *\n * console.log(arrays[0] === arrays[1]);\n * // => false\n */\nfunction stubArray() {\n return [];\n}\n\n/**\n * This method returns `false`.\n *\n * @static\n * @memberOf _\n * @since 4.13.0\n * @category Util\n * @returns {boolean} Returns `false`.\n * @example\n *\n * _.times(2, _.stubFalse);\n * // => [false, false]\n */\nfunction stubFalse() {\n return false;\n}\n\nmodule.exports = cloneDeep;\n", "/**\n * Lodash (Custom Build) \n * Build: `lodash modularize exports=\"npm\" -o ./`\n * Copyright JS Foundation and other contributors \n * Released under MIT license \n * Based on Underscore.js 1.8.3 \n * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors\n */\n\n/** Used as the size to enable large array optimizations. */\nvar LARGE_ARRAY_SIZE = 200;\n\n/** Used to stand-in for `undefined` hash values. */\nvar HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n/** Used to compose bitmasks for value comparisons. */\nvar COMPARE_PARTIAL_FLAG = 1,\n COMPARE_UNORDERED_FLAG = 2;\n\n/** Used as references for various `Number` constants. */\nvar MAX_SAFE_INTEGER = 9007199254740991;\n\n/** `Object#toString` result references. */\nvar argsTag = '[object Arguments]',\n arrayTag = '[object Array]',\n asyncTag = '[object AsyncFunction]',\n boolTag = '[object Boolean]',\n dateTag = '[object Date]',\n errorTag = '[object Error]',\n funcTag = '[object Function]',\n genTag = '[object GeneratorFunction]',\n mapTag = '[object Map]',\n numberTag = '[object Number]',\n nullTag = '[object Null]',\n objectTag = '[object Object]',\n promiseTag = '[object Promise]',\n proxyTag = '[object Proxy]',\n regexpTag = '[object RegExp]',\n setTag = '[object Set]',\n stringTag = '[object String]',\n symbolTag = '[object Symbol]',\n undefinedTag = '[object Undefined]',\n weakMapTag = '[object WeakMap]';\n\nvar arrayBufferTag = '[object ArrayBuffer]',\n dataViewTag = '[object DataView]',\n float32Tag = '[object Float32Array]',\n float64Tag = '[object Float64Array]',\n int8Tag = '[object Int8Array]',\n int16Tag = '[object Int16Array]',\n int32Tag = '[object Int32Array]',\n uint8Tag = '[object Uint8Array]',\n uint8ClampedTag = '[object Uint8ClampedArray]',\n uint16Tag = '[object Uint16Array]',\n uint32Tag = '[object Uint32Array]';\n\n/**\n * Used to match `RegExp`\n * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).\n */\nvar reRegExpChar = /[\\\\^$.*+?()[\\]{}|]/g;\n\n/** Used to detect host constructors (Safari). */\nvar reIsHostCtor = /^\\[object .+?Constructor\\]$/;\n\n/** Used to detect unsigned integer values. */\nvar reIsUint = /^(?:0|[1-9]\\d*)$/;\n\n/** Used to identify `toStringTag` values of typed arrays. */\nvar typedArrayTags = {};\ntypedArrayTags[float32Tag] = typedArrayTags[float64Tag] =\ntypedArrayTags[int8Tag] = typedArrayTags[int16Tag] =\ntypedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =\ntypedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =\ntypedArrayTags[uint32Tag] = true;\ntypedArrayTags[argsTag] = typedArrayTags[arrayTag] =\ntypedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =\ntypedArrayTags[dataViewTag] = typedArrayTags[dateTag] =\ntypedArrayTags[errorTag] = typedArrayTags[funcTag] =\ntypedArrayTags[mapTag] = typedArrayTags[numberTag] =\ntypedArrayTags[objectTag] = typedArrayTags[regexpTag] =\ntypedArrayTags[setTag] = typedArrayTags[stringTag] =\ntypedArrayTags[weakMapTag] = false;\n\n/** Detect free variable `global` from Node.js. */\nvar freeGlobal = typeof global == 'object' && global && global.Object === Object && global;\n\n/** Detect free variable `self`. */\nvar freeSelf = typeof self == 'object' && self && self.Object === Object && self;\n\n/** Used as a reference to the global object. */\nvar root = freeGlobal || freeSelf || Function('return this')();\n\n/** Detect free variable `exports`. */\nvar freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;\n\n/** Detect free variable `module`. */\nvar freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;\n\n/** Detect the popular CommonJS extension `module.exports`. */\nvar moduleExports = freeModule && freeModule.exports === freeExports;\n\n/** Detect free variable `process` from Node.js. */\nvar freeProcess = moduleExports && freeGlobal.process;\n\n/** Used to access faster Node.js helpers. */\nvar nodeUtil = (function() {\n try {\n return freeProcess && freeProcess.binding && freeProcess.binding('util');\n } catch (e) {}\n}());\n\n/* Node.js helper references. */\nvar nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;\n\n/**\n * A specialized version of `_.filter` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n */\nfunction arrayFilter(array, predicate) {\n var index = -1,\n length = array == null ? 0 : array.length,\n resIndex = 0,\n result = [];\n\n while (++index < length) {\n var value = array[index];\n if (predicate(value, index, array)) {\n result[resIndex++] = value;\n }\n }\n return result;\n}\n\n/**\n * Appends the elements of `values` to `array`.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {Array} values The values to append.\n * @returns {Array} Returns `array`.\n */\nfunction arrayPush(array, values) {\n var index = -1,\n length = values.length,\n offset = array.length;\n\n while (++index < length) {\n array[offset + index] = values[index];\n }\n return array;\n}\n\n/**\n * A specialized version of `_.some` for arrays without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if any element passes the predicate check,\n * else `false`.\n */\nfunction arraySome(array, predicate) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n if (predicate(array[index], index, array)) {\n return true;\n }\n }\n return false;\n}\n\n/**\n * The base implementation of `_.times` without support for iteratee shorthands\n * or max array length checks.\n *\n * @private\n * @param {number} n The number of times to invoke `iteratee`.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the array of results.\n */\nfunction baseTimes(n, iteratee) {\n var index = -1,\n result = Array(n);\n\n while (++index < n) {\n result[index] = iteratee(index);\n }\n return result;\n}\n\n/**\n * The base implementation of `_.unary` without support for storing metadata.\n *\n * @private\n * @param {Function} func The function to cap arguments for.\n * @returns {Function} Returns the new capped function.\n */\nfunction baseUnary(func) {\n return function(value) {\n return func(value);\n };\n}\n\n/**\n * Checks if a `cache` value for `key` exists.\n *\n * @private\n * @param {Object} cache The cache to query.\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction cacheHas(cache, key) {\n return cache.has(key);\n}\n\n/**\n * Gets the value at `key` of `object`.\n *\n * @private\n * @param {Object} [object] The object to query.\n * @param {string} key The key of the property to get.\n * @returns {*} Returns the property value.\n */\nfunction getValue(object, key) {\n return object == null ? undefined : object[key];\n}\n\n/**\n * Converts `map` to its key-value pairs.\n *\n * @private\n * @param {Object} map The map to convert.\n * @returns {Array} Returns the key-value pairs.\n */\nfunction mapToArray(map) {\n var index = -1,\n result = Array(map.size);\n\n map.forEach(function(value, key) {\n result[++index] = [key, value];\n });\n return result;\n}\n\n/**\n * Creates a unary function that invokes `func` with its argument transformed.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {Function} transform The argument transform.\n * @returns {Function} Returns the new function.\n */\nfunction overArg(func, transform) {\n return function(arg) {\n return func(transform(arg));\n };\n}\n\n/**\n * Converts `set` to an array of its values.\n *\n * @private\n * @param {Object} set The set to convert.\n * @returns {Array} Returns the values.\n */\nfunction setToArray(set) {\n var index = -1,\n result = Array(set.size);\n\n set.forEach(function(value) {\n result[++index] = value;\n });\n return result;\n}\n\n/** Used for built-in method references. */\nvar arrayProto = Array.prototype,\n funcProto = Function.prototype,\n objectProto = Object.prototype;\n\n/** Used to detect overreaching core-js shims. */\nvar coreJsData = root['__core-js_shared__'];\n\n/** Used to resolve the decompiled source of functions. */\nvar funcToString = funcProto.toString;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/** Used to detect methods masquerading as native. */\nvar maskSrcKey = (function() {\n var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');\n return uid ? ('Symbol(src)_1.' + uid) : '';\n}());\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar nativeObjectToString = objectProto.toString;\n\n/** Used to detect if a method is native. */\nvar reIsNative = RegExp('^' +\n funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\\\$&')\n .replace(/hasOwnProperty|(function).*?(?=\\\\\\()| for .+?(?=\\\\\\])/g, '$1.*?') + '$'\n);\n\n/** Built-in value references. */\nvar Buffer = moduleExports ? root.Buffer : undefined,\n Symbol = root.Symbol,\n Uint8Array = root.Uint8Array,\n propertyIsEnumerable = objectProto.propertyIsEnumerable,\n splice = arrayProto.splice,\n symToStringTag = Symbol ? Symbol.toStringTag : undefined;\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeGetSymbols = Object.getOwnPropertySymbols,\n nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined,\n nativeKeys = overArg(Object.keys, Object);\n\n/* Built-in method references that are verified to be native. */\nvar DataView = getNative(root, 'DataView'),\n Map = getNative(root, 'Map'),\n Promise = getNative(root, 'Promise'),\n Set = getNative(root, 'Set'),\n WeakMap = getNative(root, 'WeakMap'),\n nativeCreate = getNative(Object, 'create');\n\n/** Used to detect maps, sets, and weakmaps. */\nvar dataViewCtorString = toSource(DataView),\n mapCtorString = toSource(Map),\n promiseCtorString = toSource(Promise),\n setCtorString = toSource(Set),\n weakMapCtorString = toSource(WeakMap);\n\n/** Used to convert symbols to primitives and strings. */\nvar symbolProto = Symbol ? Symbol.prototype : undefined,\n symbolValueOf = symbolProto ? symbolProto.valueOf : undefined;\n\n/**\n * Creates a hash object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction Hash(entries) {\n var index = -1,\n length = entries == null ? 0 : entries.length;\n\n this.clear();\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n}\n\n/**\n * Removes all key-value entries from the hash.\n *\n * @private\n * @name clear\n * @memberOf Hash\n */\nfunction hashClear() {\n this.__data__ = nativeCreate ? nativeCreate(null) : {};\n this.size = 0;\n}\n\n/**\n * Removes `key` and its value from the hash.\n *\n * @private\n * @name delete\n * @memberOf Hash\n * @param {Object} hash The hash to modify.\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction hashDelete(key) {\n var result = this.has(key) && delete this.__data__[key];\n this.size -= result ? 1 : 0;\n return result;\n}\n\n/**\n * Gets the hash value for `key`.\n *\n * @private\n * @name get\n * @memberOf Hash\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction hashGet(key) {\n var data = this.__data__;\n if (nativeCreate) {\n var result = data[key];\n return result === HASH_UNDEFINED ? undefined : result;\n }\n return hasOwnProperty.call(data, key) ? data[key] : undefined;\n}\n\n/**\n * Checks if a hash value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf Hash\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction hashHas(key) {\n var data = this.__data__;\n return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key);\n}\n\n/**\n * Sets the hash `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf Hash\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the hash instance.\n */\nfunction hashSet(key, value) {\n var data = this.__data__;\n this.size += this.has(key) ? 0 : 1;\n data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;\n return this;\n}\n\n// Add methods to `Hash`.\nHash.prototype.clear = hashClear;\nHash.prototype['delete'] = hashDelete;\nHash.prototype.get = hashGet;\nHash.prototype.has = hashHas;\nHash.prototype.set = hashSet;\n\n/**\n * Creates an list cache object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction ListCache(entries) {\n var index = -1,\n length = entries == null ? 0 : entries.length;\n\n this.clear();\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n}\n\n/**\n * Removes all key-value entries from the list cache.\n *\n * @private\n * @name clear\n * @memberOf ListCache\n */\nfunction listCacheClear() {\n this.__data__ = [];\n this.size = 0;\n}\n\n/**\n * Removes `key` and its value from the list cache.\n *\n * @private\n * @name delete\n * @memberOf ListCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction listCacheDelete(key) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n\n if (index < 0) {\n return false;\n }\n var lastIndex = data.length - 1;\n if (index == lastIndex) {\n data.pop();\n } else {\n splice.call(data, index, 1);\n }\n --this.size;\n return true;\n}\n\n/**\n * Gets the list cache value for `key`.\n *\n * @private\n * @name get\n * @memberOf ListCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction listCacheGet(key) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n\n return index < 0 ? undefined : data[index][1];\n}\n\n/**\n * Checks if a list cache value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf ListCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction listCacheHas(key) {\n return assocIndexOf(this.__data__, key) > -1;\n}\n\n/**\n * Sets the list cache `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf ListCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the list cache instance.\n */\nfunction listCacheSet(key, value) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n\n if (index < 0) {\n ++this.size;\n data.push([key, value]);\n } else {\n data[index][1] = value;\n }\n return this;\n}\n\n// Add methods to `ListCache`.\nListCache.prototype.clear = listCacheClear;\nListCache.prototype['delete'] = listCacheDelete;\nListCache.prototype.get = listCacheGet;\nListCache.prototype.has = listCacheHas;\nListCache.prototype.set = listCacheSet;\n\n/**\n * Creates a map cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction MapCache(entries) {\n var index = -1,\n length = entries == null ? 0 : entries.length;\n\n this.clear();\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n}\n\n/**\n * Removes all key-value entries from the map.\n *\n * @private\n * @name clear\n * @memberOf MapCache\n */\nfunction mapCacheClear() {\n this.size = 0;\n this.__data__ = {\n 'hash': new Hash,\n 'map': new (Map || ListCache),\n 'string': new Hash\n };\n}\n\n/**\n * Removes `key` and its value from the map.\n *\n * @private\n * @name delete\n * @memberOf MapCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction mapCacheDelete(key) {\n var result = getMapData(this, key)['delete'](key);\n this.size -= result ? 1 : 0;\n return result;\n}\n\n/**\n * Gets the map value for `key`.\n *\n * @private\n * @name get\n * @memberOf MapCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction mapCacheGet(key) {\n return getMapData(this, key).get(key);\n}\n\n/**\n * Checks if a map value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf MapCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction mapCacheHas(key) {\n return getMapData(this, key).has(key);\n}\n\n/**\n * Sets the map `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf MapCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the map cache instance.\n */\nfunction mapCacheSet(key, value) {\n var data = getMapData(this, key),\n size = data.size;\n\n data.set(key, value);\n this.size += data.size == size ? 0 : 1;\n return this;\n}\n\n// Add methods to `MapCache`.\nMapCache.prototype.clear = mapCacheClear;\nMapCache.prototype['delete'] = mapCacheDelete;\nMapCache.prototype.get = mapCacheGet;\nMapCache.prototype.has = mapCacheHas;\nMapCache.prototype.set = mapCacheSet;\n\n/**\n *\n * Creates an array cache object to store unique values.\n *\n * @private\n * @constructor\n * @param {Array} [values] The values to cache.\n */\nfunction SetCache(values) {\n var index = -1,\n length = values == null ? 0 : values.length;\n\n this.__data__ = new MapCache;\n while (++index < length) {\n this.add(values[index]);\n }\n}\n\n/**\n * Adds `value` to the array cache.\n *\n * @private\n * @name add\n * @memberOf SetCache\n * @alias push\n * @param {*} value The value to cache.\n * @returns {Object} Returns the cache instance.\n */\nfunction setCacheAdd(value) {\n this.__data__.set(value, HASH_UNDEFINED);\n return this;\n}\n\n/**\n * Checks if `value` is in the array cache.\n *\n * @private\n * @name has\n * @memberOf SetCache\n * @param {*} value The value to search for.\n * @returns {number} Returns `true` if `value` is found, else `false`.\n */\nfunction setCacheHas(value) {\n return this.__data__.has(value);\n}\n\n// Add methods to `SetCache`.\nSetCache.prototype.add = SetCache.prototype.push = setCacheAdd;\nSetCache.prototype.has = setCacheHas;\n\n/**\n * Creates a stack cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction Stack(entries) {\n var data = this.__data__ = new ListCache(entries);\n this.size = data.size;\n}\n\n/**\n * Removes all key-value entries from the stack.\n *\n * @private\n * @name clear\n * @memberOf Stack\n */\nfunction stackClear() {\n this.__data__ = new ListCache;\n this.size = 0;\n}\n\n/**\n * Removes `key` and its value from the stack.\n *\n * @private\n * @name delete\n * @memberOf Stack\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\nfunction stackDelete(key) {\n var data = this.__data__,\n result = data['delete'](key);\n\n this.size = data.size;\n return result;\n}\n\n/**\n * Gets the stack value for `key`.\n *\n * @private\n * @name get\n * @memberOf Stack\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\nfunction stackGet(key) {\n return this.__data__.get(key);\n}\n\n/**\n * Checks if a stack value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf Stack\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\nfunction stackHas(key) {\n return this.__data__.has(key);\n}\n\n/**\n * Sets the stack `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf Stack\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the stack cache instance.\n */\nfunction stackSet(key, value) {\n var data = this.__data__;\n if (data instanceof ListCache) {\n var pairs = data.__data__;\n if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {\n pairs.push([key, value]);\n this.size = ++data.size;\n return this;\n }\n data = this.__data__ = new MapCache(pairs);\n }\n data.set(key, value);\n this.size = data.size;\n return this;\n}\n\n// Add methods to `Stack`.\nStack.prototype.clear = stackClear;\nStack.prototype['delete'] = stackDelete;\nStack.prototype.get = stackGet;\nStack.prototype.has = stackHas;\nStack.prototype.set = stackSet;\n\n/**\n * Creates an array of the enumerable property names of the array-like `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @param {boolean} inherited Specify returning inherited property names.\n * @returns {Array} Returns the array of property names.\n */\nfunction arrayLikeKeys(value, inherited) {\n var isArr = isArray(value),\n isArg = !isArr && isArguments(value),\n isBuff = !isArr && !isArg && isBuffer(value),\n isType = !isArr && !isArg && !isBuff && isTypedArray(value),\n skipIndexes = isArr || isArg || isBuff || isType,\n result = skipIndexes ? baseTimes(value.length, String) : [],\n length = result.length;\n\n for (var key in value) {\n if ((inherited || hasOwnProperty.call(value, key)) &&\n !(skipIndexes && (\n // Safari 9 has enumerable `arguments.length` in strict mode.\n key == 'length' ||\n // Node.js 0.10 has enumerable non-index properties on buffers.\n (isBuff && (key == 'offset' || key == 'parent')) ||\n // PhantomJS 2 has enumerable non-index properties on typed arrays.\n (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||\n // Skip index properties.\n isIndex(key, length)\n ))) {\n result.push(key);\n }\n }\n return result;\n}\n\n/**\n * Gets the index at which the `key` is found in `array` of key-value pairs.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} key The key to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\nfunction assocIndexOf(array, key) {\n var length = array.length;\n while (length--) {\n if (eq(array[length][0], key)) {\n return length;\n }\n }\n return -1;\n}\n\n/**\n * The base implementation of `getAllKeys` and `getAllKeysIn` which uses\n * `keysFunc` and `symbolsFunc` to get the enumerable property names and\n * symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Function} keysFunc The function to get the keys of `object`.\n * @param {Function} symbolsFunc The function to get the symbols of `object`.\n * @returns {Array} Returns the array of property names and symbols.\n */\nfunction baseGetAllKeys(object, keysFunc, symbolsFunc) {\n var result = keysFunc(object);\n return isArray(object) ? result : arrayPush(result, symbolsFunc(object));\n}\n\n/**\n * The base implementation of `getTag` without fallbacks for buggy environments.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the `toStringTag`.\n */\nfunction baseGetTag(value) {\n if (value == null) {\n return value === undefined ? undefinedTag : nullTag;\n }\n return (symToStringTag && symToStringTag in Object(value))\n ? getRawTag(value)\n : objectToString(value);\n}\n\n/**\n * The base implementation of `_.isArguments`.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n */\nfunction baseIsArguments(value) {\n return isObjectLike(value) && baseGetTag(value) == argsTag;\n}\n\n/**\n * The base implementation of `_.isEqual` which supports partial comparisons\n * and tracks traversed objects.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @param {boolean} bitmask The bitmask flags.\n * 1 - Unordered comparison\n * 2 - Partial comparison\n * @param {Function} [customizer] The function to customize comparisons.\n * @param {Object} [stack] Tracks traversed `value` and `other` objects.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n */\nfunction baseIsEqual(value, other, bitmask, customizer, stack) {\n if (value === other) {\n return true;\n }\n if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) {\n return value !== value && other !== other;\n }\n return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);\n}\n\n/**\n * A specialized version of `baseIsEqual` for arrays and objects which performs\n * deep comparisons and tracks traversed objects enabling objects with circular\n * references to be compared.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} [stack] Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\nfunction baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {\n var objIsArr = isArray(object),\n othIsArr = isArray(other),\n objTag = objIsArr ? arrayTag : getTag(object),\n othTag = othIsArr ? arrayTag : getTag(other);\n\n objTag = objTag == argsTag ? objectTag : objTag;\n othTag = othTag == argsTag ? objectTag : othTag;\n\n var objIsObj = objTag == objectTag,\n othIsObj = othTag == objectTag,\n isSameTag = objTag == othTag;\n\n if (isSameTag && isBuffer(object)) {\n if (!isBuffer(other)) {\n return false;\n }\n objIsArr = true;\n objIsObj = false;\n }\n if (isSameTag && !objIsObj) {\n stack || (stack = new Stack);\n return (objIsArr || isTypedArray(object))\n ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)\n : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);\n }\n if (!(bitmask & COMPARE_PARTIAL_FLAG)) {\n var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),\n othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');\n\n if (objIsWrapped || othIsWrapped) {\n var objUnwrapped = objIsWrapped ? object.value() : object,\n othUnwrapped = othIsWrapped ? other.value() : other;\n\n stack || (stack = new Stack);\n return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);\n }\n }\n if (!isSameTag) {\n return false;\n }\n stack || (stack = new Stack);\n return equalObjects(object, other, bitmask, customizer, equalFunc, stack);\n}\n\n/**\n * The base implementation of `_.isNative` without bad shim checks.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a native function,\n * else `false`.\n */\nfunction baseIsNative(value) {\n if (!isObject(value) || isMasked(value)) {\n return false;\n }\n var pattern = isFunction(value) ? reIsNative : reIsHostCtor;\n return pattern.test(toSource(value));\n}\n\n/**\n * The base implementation of `_.isTypedArray` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n */\nfunction baseIsTypedArray(value) {\n return isObjectLike(value) &&\n isLength(value.length) && !!typedArrayTags[baseGetTag(value)];\n}\n\n/**\n * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\nfunction baseKeys(object) {\n if (!isPrototype(object)) {\n return nativeKeys(object);\n }\n var result = [];\n for (var key in Object(object)) {\n if (hasOwnProperty.call(object, key) && key != 'constructor') {\n result.push(key);\n }\n }\n return result;\n}\n\n/**\n * A specialized version of `baseIsEqualDeep` for arrays with support for\n * partial deep comparisons.\n *\n * @private\n * @param {Array} array The array to compare.\n * @param {Array} other The other array to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} stack Tracks traversed `array` and `other` objects.\n * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.\n */\nfunction equalArrays(array, other, bitmask, customizer, equalFunc, stack) {\n var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\n arrLength = array.length,\n othLength = other.length;\n\n if (arrLength != othLength && !(isPartial && othLength > arrLength)) {\n return false;\n }\n // Assume cyclic values are equal.\n var stacked = stack.get(array);\n if (stacked && stack.get(other)) {\n return stacked == other;\n }\n var index = -1,\n result = true,\n seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined;\n\n stack.set(array, other);\n stack.set(other, array);\n\n // Ignore non-index properties.\n while (++index < arrLength) {\n var arrValue = array[index],\n othValue = other[index];\n\n if (customizer) {\n var compared = isPartial\n ? customizer(othValue, arrValue, index, other, array, stack)\n : customizer(arrValue, othValue, index, array, other, stack);\n }\n if (compared !== undefined) {\n if (compared) {\n continue;\n }\n result = false;\n break;\n }\n // Recursively compare arrays (susceptible to call stack limits).\n if (seen) {\n if (!arraySome(other, function(othValue, othIndex) {\n if (!cacheHas(seen, othIndex) &&\n (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {\n return seen.push(othIndex);\n }\n })) {\n result = false;\n break;\n }\n } else if (!(\n arrValue === othValue ||\n equalFunc(arrValue, othValue, bitmask, customizer, stack)\n )) {\n result = false;\n break;\n }\n }\n stack['delete'](array);\n stack['delete'](other);\n return result;\n}\n\n/**\n * A specialized version of `baseIsEqualDeep` for comparing objects of\n * the same `toStringTag`.\n *\n * **Note:** This function only supports comparing values with tags of\n * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {string} tag The `toStringTag` of the objects to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} stack Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\nfunction equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {\n switch (tag) {\n case dataViewTag:\n if ((object.byteLength != other.byteLength) ||\n (object.byteOffset != other.byteOffset)) {\n return false;\n }\n object = object.buffer;\n other = other.buffer;\n\n case arrayBufferTag:\n if ((object.byteLength != other.byteLength) ||\n !equalFunc(new Uint8Array(object), new Uint8Array(other))) {\n return false;\n }\n return true;\n\n case boolTag:\n case dateTag:\n case numberTag:\n // Coerce booleans to `1` or `0` and dates to milliseconds.\n // Invalid dates are coerced to `NaN`.\n return eq(+object, +other);\n\n case errorTag:\n return object.name == other.name && object.message == other.message;\n\n case regexpTag:\n case stringTag:\n // Coerce regexes to strings and treat strings, primitives and objects,\n // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring\n // for more details.\n return object == (other + '');\n\n case mapTag:\n var convert = mapToArray;\n\n case setTag:\n var isPartial = bitmask & COMPARE_PARTIAL_FLAG;\n convert || (convert = setToArray);\n\n if (object.size != other.size && !isPartial) {\n return false;\n }\n // Assume cyclic values are equal.\n var stacked = stack.get(object);\n if (stacked) {\n return stacked == other;\n }\n bitmask |= COMPARE_UNORDERED_FLAG;\n\n // Recursively compare objects (susceptible to call stack limits).\n stack.set(object, other);\n var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);\n stack['delete'](object);\n return result;\n\n case symbolTag:\n if (symbolValueOf) {\n return symbolValueOf.call(object) == symbolValueOf.call(other);\n }\n }\n return false;\n}\n\n/**\n * A specialized version of `baseIsEqualDeep` for objects with support for\n * partial deep comparisons.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} stack Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\nfunction equalObjects(object, other, bitmask, customizer, equalFunc, stack) {\n var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\n objProps = getAllKeys(object),\n objLength = objProps.length,\n othProps = getAllKeys(other),\n othLength = othProps.length;\n\n if (objLength != othLength && !isPartial) {\n return false;\n }\n var index = objLength;\n while (index--) {\n var key = objProps[index];\n if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {\n return false;\n }\n }\n // Assume cyclic values are equal.\n var stacked = stack.get(object);\n if (stacked && stack.get(other)) {\n return stacked == other;\n }\n var result = true;\n stack.set(object, other);\n stack.set(other, object);\n\n var skipCtor = isPartial;\n while (++index < objLength) {\n key = objProps[index];\n var objValue = object[key],\n othValue = other[key];\n\n if (customizer) {\n var compared = isPartial\n ? customizer(othValue, objValue, key, other, object, stack)\n : customizer(objValue, othValue, key, object, other, stack);\n }\n // Recursively compare objects (susceptible to call stack limits).\n if (!(compared === undefined\n ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))\n : compared\n )) {\n result = false;\n break;\n }\n skipCtor || (skipCtor = key == 'constructor');\n }\n if (result && !skipCtor) {\n var objCtor = object.constructor,\n othCtor = other.constructor;\n\n // Non `Object` object instances with different constructors are not equal.\n if (objCtor != othCtor &&\n ('constructor' in object && 'constructor' in other) &&\n !(typeof objCtor == 'function' && objCtor instanceof objCtor &&\n typeof othCtor == 'function' && othCtor instanceof othCtor)) {\n result = false;\n }\n }\n stack['delete'](object);\n stack['delete'](other);\n return result;\n}\n\n/**\n * Creates an array of own enumerable property names and symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names and symbols.\n */\nfunction getAllKeys(object) {\n return baseGetAllKeys(object, keys, getSymbols);\n}\n\n/**\n * Gets the data for `map`.\n *\n * @private\n * @param {Object} map The map to query.\n * @param {string} key The reference key.\n * @returns {*} Returns the map data.\n */\nfunction getMapData(map, key) {\n var data = map.__data__;\n return isKeyable(key)\n ? data[typeof key == 'string' ? 'string' : 'hash']\n : data.map;\n}\n\n/**\n * Gets the native function at `key` of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {string} key The key of the method to get.\n * @returns {*} Returns the function if it's native, else `undefined`.\n */\nfunction getNative(object, key) {\n var value = getValue(object, key);\n return baseIsNative(value) ? value : undefined;\n}\n\n/**\n * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the raw `toStringTag`.\n */\nfunction getRawTag(value) {\n var isOwn = hasOwnProperty.call(value, symToStringTag),\n tag = value[symToStringTag];\n\n try {\n value[symToStringTag] = undefined;\n var unmasked = true;\n } catch (e) {}\n\n var result = nativeObjectToString.call(value);\n if (unmasked) {\n if (isOwn) {\n value[symToStringTag] = tag;\n } else {\n delete value[symToStringTag];\n }\n }\n return result;\n}\n\n/**\n * Creates an array of the own enumerable symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of symbols.\n */\nvar getSymbols = !nativeGetSymbols ? stubArray : function(object) {\n if (object == null) {\n return [];\n }\n object = Object(object);\n return arrayFilter(nativeGetSymbols(object), function(symbol) {\n return propertyIsEnumerable.call(object, symbol);\n });\n};\n\n/**\n * Gets the `toStringTag` of `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the `toStringTag`.\n */\nvar getTag = baseGetTag;\n\n// Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.\nif ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||\n (Map && getTag(new Map) != mapTag) ||\n (Promise && getTag(Promise.resolve()) != promiseTag) ||\n (Set && getTag(new Set) != setTag) ||\n (WeakMap && getTag(new WeakMap) != weakMapTag)) {\n getTag = function(value) {\n var result = baseGetTag(value),\n Ctor = result == objectTag ? value.constructor : undefined,\n ctorString = Ctor ? toSource(Ctor) : '';\n\n if (ctorString) {\n switch (ctorString) {\n case dataViewCtorString: return dataViewTag;\n case mapCtorString: return mapTag;\n case promiseCtorString: return promiseTag;\n case setCtorString: return setTag;\n case weakMapCtorString: return weakMapTag;\n }\n }\n return result;\n };\n}\n\n/**\n * Checks if `value` is a valid array-like index.\n *\n * @private\n * @param {*} value The value to check.\n * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.\n * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.\n */\nfunction isIndex(value, length) {\n length = length == null ? MAX_SAFE_INTEGER : length;\n return !!length &&\n (typeof value == 'number' || reIsUint.test(value)) &&\n (value > -1 && value % 1 == 0 && value < length);\n}\n\n/**\n * Checks if `value` is suitable for use as unique object key.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is suitable, else `false`.\n */\nfunction isKeyable(value) {\n var type = typeof value;\n return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')\n ? (value !== '__proto__')\n : (value === null);\n}\n\n/**\n * Checks if `func` has its source masked.\n *\n * @private\n * @param {Function} func The function to check.\n * @returns {boolean} Returns `true` if `func` is masked, else `false`.\n */\nfunction isMasked(func) {\n return !!maskSrcKey && (maskSrcKey in func);\n}\n\n/**\n * Checks if `value` is likely a prototype object.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.\n */\nfunction isPrototype(value) {\n var Ctor = value && value.constructor,\n proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;\n\n return value === proto;\n}\n\n/**\n * Converts `value` to a string using `Object.prototype.toString`.\n *\n * @private\n * @param {*} value The value to convert.\n * @returns {string} Returns the converted string.\n */\nfunction objectToString(value) {\n return nativeObjectToString.call(value);\n}\n\n/**\n * Converts `func` to its source code.\n *\n * @private\n * @param {Function} func The function to convert.\n * @returns {string} Returns the source code.\n */\nfunction toSource(func) {\n if (func != null) {\n try {\n return funcToString.call(func);\n } catch (e) {}\n try {\n return (func + '');\n } catch (e) {}\n }\n return '';\n}\n\n/**\n * Performs a\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * comparison between two values to determine if they are equivalent.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n * @example\n *\n * var object = { 'a': 1 };\n * var other = { 'a': 1 };\n *\n * _.eq(object, object);\n * // => true\n *\n * _.eq(object, other);\n * // => false\n *\n * _.eq('a', 'a');\n * // => true\n *\n * _.eq('a', Object('a'));\n * // => false\n *\n * _.eq(NaN, NaN);\n * // => true\n */\nfunction eq(value, other) {\n return value === other || (value !== value && other !== other);\n}\n\n/**\n * Checks if `value` is likely an `arguments` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n * else `false`.\n * @example\n *\n * _.isArguments(function() { return arguments; }());\n * // => true\n *\n * _.isArguments([1, 2, 3]);\n * // => false\n */\nvar isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {\n return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&\n !propertyIsEnumerable.call(value, 'callee');\n};\n\n/**\n * Checks if `value` is classified as an `Array` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array, else `false`.\n * @example\n *\n * _.isArray([1, 2, 3]);\n * // => true\n *\n * _.isArray(document.body.children);\n * // => false\n *\n * _.isArray('abc');\n * // => false\n *\n * _.isArray(_.noop);\n * // => false\n */\nvar isArray = Array.isArray;\n\n/**\n * Checks if `value` is array-like. A value is considered array-like if it's\n * not a function and has a `value.length` that's an integer greater than or\n * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is array-like, else `false`.\n * @example\n *\n * _.isArrayLike([1, 2, 3]);\n * // => true\n *\n * _.isArrayLike(document.body.children);\n * // => true\n *\n * _.isArrayLike('abc');\n * // => true\n *\n * _.isArrayLike(_.noop);\n * // => false\n */\nfunction isArrayLike(value) {\n return value != null && isLength(value.length) && !isFunction(value);\n}\n\n/**\n * Checks if `value` is a buffer.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.\n * @example\n *\n * _.isBuffer(new Buffer(2));\n * // => true\n *\n * _.isBuffer(new Uint8Array(2));\n * // => false\n */\nvar isBuffer = nativeIsBuffer || stubFalse;\n\n/**\n * Performs a deep comparison between two values to determine if they are\n * equivalent.\n *\n * **Note:** This method supports comparing arrays, array buffers, booleans,\n * date objects, error objects, maps, numbers, `Object` objects, regexes,\n * sets, strings, symbols, and typed arrays. `Object` objects are compared\n * by their own, not inherited, enumerable properties. Functions and DOM\n * nodes are compared by strict equality, i.e. `===`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n * @example\n *\n * var object = { 'a': 1 };\n * var other = { 'a': 1 };\n *\n * _.isEqual(object, other);\n * // => true\n *\n * object === other;\n * // => false\n */\nfunction isEqual(value, other) {\n return baseIsEqual(value, other);\n}\n\n/**\n * Checks if `value` is classified as a `Function` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a function, else `false`.\n * @example\n *\n * _.isFunction(_);\n * // => true\n *\n * _.isFunction(/abc/);\n * // => false\n */\nfunction isFunction(value) {\n if (!isObject(value)) {\n return false;\n }\n // The use of `Object#toString` avoids issues with the `typeof` operator\n // in Safari 9 which returns 'object' for typed arrays and other constructors.\n var tag = baseGetTag(value);\n return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;\n}\n\n/**\n * Checks if `value` is a valid array-like length.\n *\n * **Note:** This method is loosely based on\n * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.\n * @example\n *\n * _.isLength(3);\n * // => true\n *\n * _.isLength(Number.MIN_VALUE);\n * // => false\n *\n * _.isLength(Infinity);\n * // => false\n *\n * _.isLength('3');\n * // => false\n */\nfunction isLength(value) {\n return typeof value == 'number' &&\n value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;\n}\n\n/**\n * Checks if `value` is the\n * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)\n * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an object, else `false`.\n * @example\n *\n * _.isObject({});\n * // => true\n *\n * _.isObject([1, 2, 3]);\n * // => true\n *\n * _.isObject(_.noop);\n * // => true\n *\n * _.isObject(null);\n * // => false\n */\nfunction isObject(value) {\n var type = typeof value;\n return value != null && (type == 'object' || type == 'function');\n}\n\n/**\n * Checks if `value` is object-like. A value is object-like if it's not `null`\n * and has a `typeof` result of \"object\".\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\n * @example\n *\n * _.isObjectLike({});\n * // => true\n *\n * _.isObjectLike([1, 2, 3]);\n * // => true\n *\n * _.isObjectLike(_.noop);\n * // => false\n *\n * _.isObjectLike(null);\n * // => false\n */\nfunction isObjectLike(value) {\n return value != null && typeof value == 'object';\n}\n\n/**\n * Checks if `value` is classified as a typed array.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n * @example\n *\n * _.isTypedArray(new Uint8Array);\n * // => true\n *\n * _.isTypedArray([]);\n * // => false\n */\nvar isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;\n\n/**\n * Creates an array of the own enumerable property names of `object`.\n *\n * **Note:** Non-object values are coerced to objects. See the\n * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\n * for more details.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.keys(new Foo);\n * // => ['a', 'b'] (iteration order is not guaranteed)\n *\n * _.keys('hi');\n * // => ['0', '1']\n */\nfunction keys(object) {\n return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);\n}\n\n/**\n * This method returns a new empty array.\n *\n * @static\n * @memberOf _\n * @since 4.13.0\n * @category Util\n * @returns {Array} Returns the new empty array.\n * @example\n *\n * var arrays = _.times(2, _.stubArray);\n *\n * console.log(arrays);\n * // => [[], []]\n *\n * console.log(arrays[0] === arrays[1]);\n * // => false\n */\nfunction stubArray() {\n return [];\n}\n\n/**\n * This method returns `false`.\n *\n * @static\n * @memberOf _\n * @since 4.13.0\n * @category Util\n * @returns {boolean} Returns `false`.\n * @example\n *\n * _.times(2, _.stubFalse);\n * // => [false, false]\n */\nfunction stubFalse() {\n return false;\n}\n\nmodule.exports = isEqual;\n", "import cloneDeep = require('lodash.clonedeep');\nimport isEqual = require('lodash.isequal');\n\ninterface AttributeMap {\n [key: string]: unknown;\n}\n\nnamespace AttributeMap {\n export function compose(\n a: AttributeMap = {},\n b: AttributeMap = {},\n keepNull = false,\n ): AttributeMap | undefined {\n if (typeof a !== 'object') {\n a = {};\n }\n if (typeof b !== 'object') {\n b = {};\n }\n let attributes = cloneDeep(b);\n if (!keepNull) {\n attributes = Object.keys(attributes).reduce((copy, key) => {\n if (attributes[key] != null) {\n copy[key] = attributes[key];\n }\n return copy;\n }, {});\n }\n for (const key in a) {\n if (a[key] !== undefined && b[key] === undefined) {\n attributes[key] = a[key];\n }\n }\n return Object.keys(attributes).length > 0 ? attributes : undefined;\n }\n\n export function diff(\n a: AttributeMap = {},\n b: AttributeMap = {},\n ): AttributeMap | undefined {\n if (typeof a !== 'object') {\n a = {};\n }\n if (typeof b !== 'object') {\n b = {};\n }\n const attributes = Object.keys(a)\n .concat(Object.keys(b))\n .reduce((attrs, key) => {\n if (!isEqual(a[key], b[key])) {\n attrs[key] = b[key] === undefined ? null : b[key];\n }\n return attrs;\n }, {});\n return Object.keys(attributes).length > 0 ? attributes : undefined;\n }\n\n export function invert(\n attr: AttributeMap = {},\n base: AttributeMap = {},\n ): AttributeMap {\n attr = attr || {};\n const baseInverted = Object.keys(base).reduce((memo, key) => {\n if (base[key] !== attr[key] && attr[key] !== undefined) {\n memo[key] = base[key];\n }\n return memo;\n }, {});\n return Object.keys(attr).reduce((memo, key) => {\n if (attr[key] !== base[key] && base[key] === undefined) {\n memo[key] = null;\n }\n return memo;\n }, baseInverted);\n }\n\n export function transform(\n a: AttributeMap | undefined,\n b: AttributeMap | undefined,\n priority = false,\n ): AttributeMap | undefined {\n if (typeof a !== 'object') {\n return b;\n }\n if (typeof b !== 'object') {\n return undefined;\n }\n if (!priority) {\n return b; // b simply overwrites us without priority\n }\n const attributes = Object.keys(b).reduce((attrs, key) => {\n if (a[key] === undefined) {\n attrs[key] = b[key]; // null is a valid value\n }\n return attrs;\n }, {});\n return Object.keys(attributes).length > 0 ? attributes : undefined;\n }\n}\n\nexport default AttributeMap;\n", "import AttributeMap from './AttributeMap';\n\ninterface Op {\n // only one property out of {insert, delete, retain} will be present\n insert?: string | Record;\n delete?: number;\n retain?: number | Record;\n\n attributes?: AttributeMap;\n}\n\nnamespace Op {\n export function length(op: Op): number {\n if (typeof op.delete === 'number') {\n return op.delete;\n } else if (typeof op.retain === 'number') {\n return op.retain;\n } else if (typeof op.retain === 'object' && op.retain !== null) {\n return 1;\n } else {\n return typeof op.insert === 'string' ? op.insert.length : 1;\n }\n }\n}\n\nexport default Op;\n", "import Op from './Op';\n\nexport default class Iterator {\n ops: Op[];\n index: number;\n offset: number;\n\n constructor(ops: Op[]) {\n this.ops = ops;\n this.index = 0;\n this.offset = 0;\n }\n\n hasNext(): boolean {\n return this.peekLength() < Infinity;\n }\n\n next(length?: number): Op {\n if (!length) {\n length = Infinity;\n }\n const nextOp = this.ops[this.index];\n if (nextOp) {\n const offset = this.offset;\n const opLength = Op.length(nextOp);\n if (length >= opLength - offset) {\n length = opLength - offset;\n this.index += 1;\n this.offset = 0;\n } else {\n this.offset += length;\n }\n if (typeof nextOp.delete === 'number') {\n return { delete: length };\n } else {\n const retOp: Op = {};\n if (nextOp.attributes) {\n retOp.attributes = nextOp.attributes;\n }\n if (typeof nextOp.retain === 'number') {\n retOp.retain = length;\n } else if (\n typeof nextOp.retain === 'object' &&\n nextOp.retain !== null\n ) {\n // offset should === 0, length should === 1\n retOp.retain = nextOp.retain;\n } else if (typeof nextOp.insert === 'string') {\n retOp.insert = nextOp.insert.substr(offset, length);\n } else {\n // offset should === 0, length should === 1\n retOp.insert = nextOp.insert;\n }\n return retOp;\n }\n } else {\n return { retain: Infinity };\n }\n }\n\n peek(): Op {\n return this.ops[this.index];\n }\n\n peekLength(): number {\n if (this.ops[this.index]) {\n // Should never return 0 if our index is being managed correctly\n return Op.length(this.ops[this.index]) - this.offset;\n } else {\n return Infinity;\n }\n }\n\n peekType(): string {\n const op = this.ops[this.index];\n if (op) {\n if (typeof op.delete === 'number') {\n return 'delete';\n } else if (\n typeof op.retain === 'number' ||\n (typeof op.retain === 'object' && op.retain !== null)\n ) {\n return 'retain';\n } else {\n return 'insert';\n }\n }\n return 'retain';\n }\n\n rest(): Op[] {\n if (!this.hasNext()) {\n return [];\n } else if (this.offset === 0) {\n return this.ops.slice(this.index);\n } else {\n const offset = this.offset;\n const index = this.index;\n const next = this.next();\n const rest = this.ops.slice(this.index);\n this.offset = offset;\n this.index = index;\n return [next].concat(rest);\n }\n }\n}\n", "import * as diff from 'fast-diff';\nimport cloneDeep = require('lodash.clonedeep');\nimport isEqual = require('lodash.isequal');\nimport AttributeMap from './AttributeMap';\nimport Op from './Op';\nimport OpIterator from './OpIterator';\n\nconst NULL_CHARACTER = String.fromCharCode(0); // Placeholder char for embed in diff()\n\ninterface EmbedHandler {\n compose(a: T, b: T, keepNull: boolean): T;\n invert(a: T, b: T): T;\n transform(a: T, b: T, priority: boolean): T;\n}\n\nconst getEmbedTypeAndData = (\n a: Op['insert'] | Op['retain'],\n b: Op['insert'],\n): [string, unknown, unknown] => {\n if (typeof a !== 'object' || a === null) {\n throw new Error(`cannot retain a ${typeof a}`);\n }\n if (typeof b !== 'object' || b === null) {\n throw new Error(`cannot retain a ${typeof b}`);\n }\n const embedType = Object.keys(a)[0];\n if (!embedType || embedType !== Object.keys(b)[0]) {\n throw new Error(\n `embed types not matched: ${embedType} != ${Object.keys(b)[0]}`,\n );\n }\n return [embedType, a[embedType], b[embedType]];\n};\n\nclass Delta {\n static Op = Op;\n static OpIterator = OpIterator;\n static AttributeMap = AttributeMap;\n private static handlers: { [embedType: string]: EmbedHandler } = {};\n\n static registerEmbed(embedType: string, handler: EmbedHandler): void {\n this.handlers[embedType] = handler;\n }\n\n static unregisterEmbed(embedType: string): void {\n delete this.handlers[embedType];\n }\n\n private static getHandler(embedType: string): EmbedHandler {\n const handler = this.handlers[embedType];\n if (!handler) {\n throw new Error(`no handlers for embed type \"${embedType}\"`);\n }\n return handler;\n }\n\n ops: Op[];\n constructor(ops?: Op[] | { ops: Op[] }) {\n // Assume we are given a well formed ops\n if (Array.isArray(ops)) {\n this.ops = ops;\n } else if (ops != null && Array.isArray(ops.ops)) {\n this.ops = ops.ops;\n } else {\n this.ops = [];\n }\n }\n\n insert(\n arg: string | Record,\n attributes?: AttributeMap | null,\n ): this {\n const newOp: Op = {};\n if (typeof arg === 'string' && arg.length === 0) {\n return this;\n }\n newOp.insert = arg;\n if (\n attributes != null &&\n typeof attributes === 'object' &&\n Object.keys(attributes).length > 0\n ) {\n newOp.attributes = attributes;\n }\n return this.push(newOp);\n }\n\n delete(length: number): this {\n if (length <= 0) {\n return this;\n }\n return this.push({ delete: length });\n }\n\n retain(\n length: number | Record,\n attributes?: AttributeMap | null,\n ): this {\n if (typeof length === 'number' && length <= 0) {\n return this;\n }\n const newOp: Op = { retain: length };\n if (\n attributes != null &&\n typeof attributes === 'object' &&\n Object.keys(attributes).length > 0\n ) {\n newOp.attributes = attributes;\n }\n return this.push(newOp);\n }\n\n push(newOp: Op): this {\n let index = this.ops.length;\n let lastOp = this.ops[index - 1];\n newOp = cloneDeep(newOp);\n if (typeof lastOp === 'object') {\n if (\n typeof newOp.delete === 'number' &&\n typeof lastOp.delete === 'number'\n ) {\n this.ops[index - 1] = { delete: lastOp.delete + newOp.delete };\n return this;\n }\n // Since it does not matter if we insert before or after deleting at the same index,\n // always prefer to insert first\n if (typeof lastOp.delete === 'number' && newOp.insert != null) {\n index -= 1;\n lastOp = this.ops[index - 1];\n if (typeof lastOp !== 'object') {\n this.ops.unshift(newOp);\n return this;\n }\n }\n if (isEqual(newOp.attributes, lastOp.attributes)) {\n if (\n typeof newOp.insert === 'string' &&\n typeof lastOp.insert === 'string'\n ) {\n this.ops[index - 1] = { insert: lastOp.insert + newOp.insert };\n if (typeof newOp.attributes === 'object') {\n this.ops[index - 1].attributes = newOp.attributes;\n }\n return this;\n } else if (\n typeof newOp.retain === 'number' &&\n typeof lastOp.retain === 'number'\n ) {\n this.ops[index - 1] = { retain: lastOp.retain + newOp.retain };\n if (typeof newOp.attributes === 'object') {\n this.ops[index - 1].attributes = newOp.attributes;\n }\n return this;\n }\n }\n }\n if (index === this.ops.length) {\n this.ops.push(newOp);\n } else {\n this.ops.splice(index, 0, newOp);\n }\n return this;\n }\n\n chop(): this {\n const lastOp = this.ops[this.ops.length - 1];\n if (lastOp && typeof lastOp.retain === 'number' && !lastOp.attributes) {\n this.ops.pop();\n }\n return this;\n }\n\n filter(predicate: (op: Op, index: number) => boolean): Op[] {\n return this.ops.filter(predicate);\n }\n\n forEach(predicate: (op: Op, index: number) => void): void {\n this.ops.forEach(predicate);\n }\n\n map(predicate: (op: Op, index: number) => T): T[] {\n return this.ops.map(predicate);\n }\n\n partition(predicate: (op: Op) => boolean): [Op[], Op[]] {\n const passed: Op[] = [];\n const failed: Op[] = [];\n this.forEach((op) => {\n const target = predicate(op) ? passed : failed;\n target.push(op);\n });\n return [passed, failed];\n }\n\n reduce(\n predicate: (accum: T, curr: Op, index: number) => T,\n initialValue: T,\n ): T {\n return this.ops.reduce(predicate, initialValue);\n }\n\n changeLength(): number {\n return this.reduce((length, elem) => {\n if (elem.insert) {\n return length + Op.length(elem);\n } else if (elem.delete) {\n return length - elem.delete;\n }\n return length;\n }, 0);\n }\n\n length(): number {\n return this.reduce((length, elem) => {\n return length + Op.length(elem);\n }, 0);\n }\n\n slice(start = 0, end = Infinity): Delta {\n const ops = [];\n const iter = new OpIterator(this.ops);\n let index = 0;\n while (index < end && iter.hasNext()) {\n let nextOp;\n if (index < start) {\n nextOp = iter.next(start - index);\n } else {\n nextOp = iter.next(end - index);\n ops.push(nextOp);\n }\n index += Op.length(nextOp);\n }\n return new Delta(ops);\n }\n\n compose(other: Delta): Delta {\n const thisIter = new OpIterator(this.ops);\n const otherIter = new OpIterator(other.ops);\n const ops = [];\n const firstOther = otherIter.peek();\n if (\n firstOther != null &&\n typeof firstOther.retain === 'number' &&\n firstOther.attributes == null\n ) {\n let firstLeft = firstOther.retain;\n while (\n thisIter.peekType() === 'insert' &&\n thisIter.peekLength() <= firstLeft\n ) {\n firstLeft -= thisIter.peekLength();\n ops.push(thisIter.next());\n }\n if (firstOther.retain - firstLeft > 0) {\n otherIter.next(firstOther.retain - firstLeft);\n }\n }\n const delta = new Delta(ops);\n while (thisIter.hasNext() || otherIter.hasNext()) {\n if (otherIter.peekType() === 'insert') {\n delta.push(otherIter.next());\n } else if (thisIter.peekType() === 'delete') {\n delta.push(thisIter.next());\n } else {\n const length = Math.min(thisIter.peekLength(), otherIter.peekLength());\n const thisOp = thisIter.next(length);\n const otherOp = otherIter.next(length);\n if (otherOp.retain) {\n const newOp: Op = {};\n if (typeof thisOp.retain === 'number') {\n newOp.retain =\n typeof otherOp.retain === 'number' ? length : otherOp.retain;\n } else {\n if (typeof otherOp.retain === 'number') {\n if (thisOp.retain == null) {\n newOp.insert = thisOp.insert;\n } else {\n newOp.retain = thisOp.retain;\n }\n } else {\n const action = thisOp.retain == null ? 'insert' : 'retain';\n const [embedType, thisData, otherData] = getEmbedTypeAndData(\n thisOp[action],\n otherOp.retain,\n );\n const handler = Delta.getHandler(embedType);\n newOp[action] = {\n [embedType]: handler.compose(\n thisData,\n otherData,\n action === 'retain',\n ),\n };\n }\n }\n // Preserve null when composing with a retain, otherwise remove it for inserts\n const attributes = AttributeMap.compose(\n thisOp.attributes,\n otherOp.attributes,\n typeof thisOp.retain === 'number',\n );\n if (attributes) {\n newOp.attributes = attributes;\n }\n delta.push(newOp);\n\n // Optimization if rest of other is just retain\n if (\n !otherIter.hasNext() &&\n isEqual(delta.ops[delta.ops.length - 1], newOp)\n ) {\n const rest = new Delta(thisIter.rest());\n return delta.concat(rest).chop();\n }\n\n // Other op should be delete, we could be an insert or retain\n // Insert + delete cancels out\n } else if (\n typeof otherOp.delete === 'number' &&\n (typeof thisOp.retain === 'number' ||\n (typeof thisOp.retain === 'object' && thisOp.retain !== null))\n ) {\n delta.push(otherOp);\n }\n }\n }\n return delta.chop();\n }\n\n concat(other: Delta): Delta {\n const delta = new Delta(this.ops.slice());\n if (other.ops.length > 0) {\n delta.push(other.ops[0]);\n delta.ops = delta.ops.concat(other.ops.slice(1));\n }\n return delta;\n }\n\n diff(other: Delta, cursor?: number | diff.CursorInfo): Delta {\n if (this.ops === other.ops) {\n return new Delta();\n }\n const strings = [this, other].map((delta) => {\n return delta\n .map((op) => {\n if (op.insert != null) {\n return typeof op.insert === 'string' ? op.insert : NULL_CHARACTER;\n }\n const prep = delta === other ? 'on' : 'with';\n throw new Error('diff() called ' + prep + ' non-document');\n })\n .join('');\n });\n const retDelta = new Delta();\n const diffResult = diff(strings[0], strings[1], cursor, true);\n const thisIter = new OpIterator(this.ops);\n const otherIter = new OpIterator(other.ops);\n diffResult.forEach((component: diff.Diff) => {\n let length = component[1].length;\n while (length > 0) {\n let opLength = 0;\n switch (component[0]) {\n case diff.INSERT:\n opLength = Math.min(otherIter.peekLength(), length);\n retDelta.push(otherIter.next(opLength));\n break;\n case diff.DELETE:\n opLength = Math.min(length, thisIter.peekLength());\n thisIter.next(opLength);\n retDelta.delete(opLength);\n break;\n case diff.EQUAL:\n opLength = Math.min(\n thisIter.peekLength(),\n otherIter.peekLength(),\n length,\n );\n const thisOp = thisIter.next(opLength);\n const otherOp = otherIter.next(opLength);\n if (isEqual(thisOp.insert, otherOp.insert)) {\n retDelta.retain(\n opLength,\n AttributeMap.diff(thisOp.attributes, otherOp.attributes),\n );\n } else {\n retDelta.push(otherOp).delete(opLength);\n }\n break;\n }\n length -= opLength;\n }\n });\n return retDelta.chop();\n }\n\n eachLine(\n predicate: (\n line: Delta,\n attributes: AttributeMap,\n index: number,\n ) => boolean | void,\n newline = '\\n',\n ): void {\n const iter = new OpIterator(this.ops);\n let line = new Delta();\n let i = 0;\n while (iter.hasNext()) {\n if (iter.peekType() !== 'insert') {\n return;\n }\n const thisOp = iter.peek();\n const start = Op.length(thisOp) - iter.peekLength();\n const index =\n typeof thisOp.insert === 'string'\n ? thisOp.insert.indexOf(newline, start) - start\n : -1;\n if (index < 0) {\n line.push(iter.next());\n } else if (index > 0) {\n line.push(iter.next(index));\n } else {\n if (predicate(line, iter.next(1).attributes || {}, i) === false) {\n return;\n }\n i += 1;\n line = new Delta();\n }\n }\n if (line.length() > 0) {\n predicate(line, {}, i);\n }\n }\n\n invert(base: Delta): Delta {\n const inverted = new Delta();\n this.reduce((baseIndex, op) => {\n if (op.insert) {\n inverted.delete(Op.length(op));\n } else if (typeof op.retain === 'number' && op.attributes == null) {\n inverted.retain(op.retain);\n return baseIndex + op.retain;\n } else if (op.delete || typeof op.retain === 'number') {\n const length = (op.delete || op.retain) as number;\n const slice = base.slice(baseIndex, baseIndex + length);\n slice.forEach((baseOp) => {\n if (op.delete) {\n inverted.push(baseOp);\n } else if (op.retain && op.attributes) {\n inverted.retain(\n Op.length(baseOp),\n AttributeMap.invert(op.attributes, baseOp.attributes),\n );\n }\n });\n return baseIndex + length;\n } else if (typeof op.retain === 'object' && op.retain !== null) {\n const slice = base.slice(baseIndex, baseIndex + 1);\n const baseOp = new OpIterator(slice.ops).next();\n const [embedType, opData, baseOpData] = getEmbedTypeAndData(\n op.retain,\n baseOp.insert,\n );\n const handler = Delta.getHandler(embedType);\n inverted.retain(\n { [embedType]: handler.invert(opData, baseOpData) },\n AttributeMap.invert(op.attributes, baseOp.attributes),\n );\n return baseIndex + 1;\n }\n return baseIndex;\n }, 0);\n return inverted.chop();\n }\n\n transform(index: number, priority?: boolean): number;\n transform(other: Delta, priority?: boolean): Delta;\n transform(arg: number | Delta, priority = false): typeof arg {\n priority = !!priority;\n if (typeof arg === 'number') {\n return this.transformPosition(arg, priority);\n }\n const other: Delta = arg;\n const thisIter = new OpIterator(this.ops);\n const otherIter = new OpIterator(other.ops);\n const delta = new Delta();\n while (thisIter.hasNext() || otherIter.hasNext()) {\n if (\n thisIter.peekType() === 'insert' &&\n (priority || otherIter.peekType() !== 'insert')\n ) {\n delta.retain(Op.length(thisIter.next()));\n } else if (otherIter.peekType() === 'insert') {\n delta.push(otherIter.next());\n } else {\n const length = Math.min(thisIter.peekLength(), otherIter.peekLength());\n const thisOp = thisIter.next(length);\n const otherOp = otherIter.next(length);\n if (thisOp.delete) {\n // Our delete either makes their delete redundant or removes their retain\n continue;\n } else if (otherOp.delete) {\n delta.push(otherOp);\n } else {\n const thisData = thisOp.retain;\n const otherData = otherOp.retain;\n let transformedData: Op['retain'] =\n typeof otherData === 'object' && otherData !== null\n ? otherData\n : length;\n if (\n typeof thisData === 'object' &&\n thisData !== null &&\n typeof otherData === 'object' &&\n otherData !== null\n ) {\n const embedType = Object.keys(thisData)[0];\n if (embedType === Object.keys(otherData)[0]) {\n const handler = Delta.getHandler(embedType);\n if (handler) {\n transformedData = {\n [embedType]: handler.transform(\n thisData[embedType],\n otherData[embedType],\n priority,\n ),\n };\n }\n }\n }\n\n // We retain either their retain or insert\n delta.retain(\n transformedData,\n AttributeMap.transform(\n thisOp.attributes,\n otherOp.attributes,\n priority,\n ),\n );\n }\n }\n }\n return delta.chop();\n }\n\n transformPosition(index: number, priority = false): number {\n priority = !!priority;\n const thisIter = new OpIterator(this.ops);\n let offset = 0;\n while (thisIter.hasNext() && offset <= index) {\n const length = thisIter.peekLength();\n const nextType = thisIter.peekType();\n thisIter.next();\n if (nextType === 'delete') {\n index -= Math.min(length, index - offset);\n continue;\n } else if (nextType === 'insert' && (offset < index || !priority)) {\n index += length;\n }\n offset += length;\n }\n return index;\n }\n}\n\nexport default Delta;\n\nexport { Op, OpIterator, AttributeMap };\n\nif (typeof module === 'object') {\n module.exports = Delta;\n module.exports.default = Delta;\n}\n", "'use strict';\n\nvar has = Object.prototype.hasOwnProperty\n , prefix = '~';\n\n/**\n * Constructor to create a storage for our `EE` objects.\n * An `Events` instance is a plain object whose properties are event names.\n *\n * @constructor\n * @private\n */\nfunction Events() {}\n\n//\n// We try to not inherit from `Object.prototype`. In some engines creating an\n// instance in this way is faster than calling `Object.create(null)` directly.\n// If `Object.create(null)` is not supported we prefix the event names with a\n// character to make sure that the built-in object properties are not\n// overridden or used as an attack vector.\n//\nif (Object.create) {\n Events.prototype = Object.create(null);\n\n //\n // This hack is needed because the `__proto__` property is still inherited in\n // some old browsers like Android 4, iPhone 5.1, Opera 11 and Safari 5.\n //\n if (!new Events().__proto__) prefix = false;\n}\n\n/**\n * Representation of a single event listener.\n *\n * @param {Function} fn The listener function.\n * @param {*} context The context to invoke the listener with.\n * @param {Boolean} [once=false] Specify if the listener is a one-time listener.\n * @constructor\n * @private\n */\nfunction EE(fn, context, once) {\n this.fn = fn;\n this.context = context;\n this.once = once || false;\n}\n\n/**\n * Add a listener for a given event.\n *\n * @param {EventEmitter} emitter Reference to the `EventEmitter` instance.\n * @param {(String|Symbol)} event The event name.\n * @param {Function} fn The listener function.\n * @param {*} context The context to invoke the listener with.\n * @param {Boolean} once Specify if the listener is a one-time listener.\n * @returns {EventEmitter}\n * @private\n */\nfunction addListener(emitter, event, fn, context, once) {\n if (typeof fn !== 'function') {\n throw new TypeError('The listener must be a function');\n }\n\n var listener = new EE(fn, context || emitter, once)\n , evt = prefix ? prefix + event : event;\n\n if (!emitter._events[evt]) emitter._events[evt] = listener, emitter._eventsCount++;\n else if (!emitter._events[evt].fn) emitter._events[evt].push(listener);\n else emitter._events[evt] = [emitter._events[evt], listener];\n\n return emitter;\n}\n\n/**\n * Clear event by name.\n *\n * @param {EventEmitter} emitter Reference to the `EventEmitter` instance.\n * @param {(String|Symbol)} evt The Event name.\n * @private\n */\nfunction clearEvent(emitter, evt) {\n if (--emitter._eventsCount === 0) emitter._events = new Events();\n else delete emitter._events[evt];\n}\n\n/**\n * Minimal `EventEmitter` interface that is molded against the Node.js\n * `EventEmitter` interface.\n *\n * @constructor\n * @public\n */\nfunction EventEmitter() {\n this._events = new Events();\n this._eventsCount = 0;\n}\n\n/**\n * Return an array listing the events for which the emitter has registered\n * listeners.\n *\n * @returns {Array}\n * @public\n */\nEventEmitter.prototype.eventNames = function eventNames() {\n var names = []\n , events\n , name;\n\n if (this._eventsCount === 0) return names;\n\n for (name in (events = this._events)) {\n if (has.call(events, name)) names.push(prefix ? name.slice(1) : name);\n }\n\n if (Object.getOwnPropertySymbols) {\n return names.concat(Object.getOwnPropertySymbols(events));\n }\n\n return names;\n};\n\n/**\n * Return the listeners registered for a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @returns {Array} The registered listeners.\n * @public\n */\nEventEmitter.prototype.listeners = function listeners(event) {\n var evt = prefix ? prefix + event : event\n , handlers = this._events[evt];\n\n if (!handlers) return [];\n if (handlers.fn) return [handlers.fn];\n\n for (var i = 0, l = handlers.length, ee = new Array(l); i < l; i++) {\n ee[i] = handlers[i].fn;\n }\n\n return ee;\n};\n\n/**\n * Return the number of listeners listening to a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @returns {Number} The number of listeners.\n * @public\n */\nEventEmitter.prototype.listenerCount = function listenerCount(event) {\n var evt = prefix ? prefix + event : event\n , listeners = this._events[evt];\n\n if (!listeners) return 0;\n if (listeners.fn) return 1;\n return listeners.length;\n};\n\n/**\n * Calls each of the listeners registered for a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @returns {Boolean} `true` if the event had listeners, else `false`.\n * @public\n */\nEventEmitter.prototype.emit = function emit(event, a1, a2, a3, a4, a5) {\n var evt = prefix ? prefix + event : event;\n\n if (!this._events[evt]) return false;\n\n var listeners = this._events[evt]\n , len = arguments.length\n , args\n , i;\n\n if (listeners.fn) {\n if (listeners.once) this.removeListener(event, listeners.fn, undefined, true);\n\n switch (len) {\n case 1: return listeners.fn.call(listeners.context), true;\n case 2: return listeners.fn.call(listeners.context, a1), true;\n case 3: return listeners.fn.call(listeners.context, a1, a2), true;\n case 4: return listeners.fn.call(listeners.context, a1, a2, a3), true;\n case 5: return listeners.fn.call(listeners.context, a1, a2, a3, a4), true;\n case 6: return listeners.fn.call(listeners.context, a1, a2, a3, a4, a5), true;\n }\n\n for (i = 1, args = new Array(len -1); i < len; i++) {\n args[i - 1] = arguments[i];\n }\n\n listeners.fn.apply(listeners.context, args);\n } else {\n var length = listeners.length\n , j;\n\n for (i = 0; i < length; i++) {\n if (listeners[i].once) this.removeListener(event, listeners[i].fn, undefined, true);\n\n switch (len) {\n case 1: listeners[i].fn.call(listeners[i].context); break;\n case 2: listeners[i].fn.call(listeners[i].context, a1); break;\n case 3: listeners[i].fn.call(listeners[i].context, a1, a2); break;\n case 4: listeners[i].fn.call(listeners[i].context, a1, a2, a3); break;\n default:\n if (!args) for (j = 1, args = new Array(len -1); j < len; j++) {\n args[j - 1] = arguments[j];\n }\n\n listeners[i].fn.apply(listeners[i].context, args);\n }\n }\n }\n\n return true;\n};\n\n/**\n * Add a listener for a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @param {Function} fn The listener function.\n * @param {*} [context=this] The context to invoke the listener with.\n * @returns {EventEmitter} `this`.\n * @public\n */\nEventEmitter.prototype.on = function on(event, fn, context) {\n return addListener(this, event, fn, context, false);\n};\n\n/**\n * Add a one-time listener for a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @param {Function} fn The listener function.\n * @param {*} [context=this] The context to invoke the listener with.\n * @returns {EventEmitter} `this`.\n * @public\n */\nEventEmitter.prototype.once = function once(event, fn, context) {\n return addListener(this, event, fn, context, true);\n};\n\n/**\n * Remove the listeners of a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @param {Function} fn Only remove the listeners that match this function.\n * @param {*} context Only remove the listeners that have this context.\n * @param {Boolean} once Only remove one-time listeners.\n * @returns {EventEmitter} `this`.\n * @public\n */\nEventEmitter.prototype.removeListener = function removeListener(event, fn, context, once) {\n var evt = prefix ? prefix + event : event;\n\n if (!this._events[evt]) return this;\n if (!fn) {\n clearEvent(this, evt);\n return this;\n }\n\n var listeners = this._events[evt];\n\n if (listeners.fn) {\n if (\n listeners.fn === fn &&\n (!once || listeners.once) &&\n (!context || listeners.context === context)\n ) {\n clearEvent(this, evt);\n }\n } else {\n for (var i = 0, events = [], length = listeners.length; i < length; i++) {\n if (\n listeners[i].fn !== fn ||\n (once && !listeners[i].once) ||\n (context && listeners[i].context !== context)\n ) {\n events.push(listeners[i]);\n }\n }\n\n //\n // Reset the array, or remove it completely if we have no more listeners.\n //\n if (events.length) this._events[evt] = events.length === 1 ? events[0] : events;\n else clearEvent(this, evt);\n }\n\n return this;\n};\n\n/**\n * Remove all listeners, or those of the specified event.\n *\n * @param {(String|Symbol)} [event] The event name.\n * @returns {EventEmitter} `this`.\n * @public\n */\nEventEmitter.prototype.removeAllListeners = function removeAllListeners(event) {\n var evt;\n\n if (event) {\n evt = prefix ? prefix + event : event;\n if (this._events[evt]) clearEvent(this, evt);\n } else {\n this._events = new Events();\n this._eventsCount = 0;\n }\n\n return this;\n};\n\n//\n// Alias methods names because people roll like that.\n//\nEventEmitter.prototype.off = EventEmitter.prototype.removeListener;\nEventEmitter.prototype.addListener = EventEmitter.prototype.on;\n\n//\n// Expose the prefix.\n//\nEventEmitter.prefixed = prefix;\n\n//\n// Allow `EventEmitter` to be imported as module namespace.\n//\nEventEmitter.EventEmitter = EventEmitter;\n\n//\n// Expose the module.\n//\nif ('undefined' !== typeof module) {\n module.exports = EventEmitter;\n}\n", "/*!\nTurbo 8.0.10\nCopyright \u00A9 2024 37signals LLC\n */\n/**\n * The MIT License (MIT)\n *\n * Copyright (c) 2019 Javan Makhmali\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n(function (prototype) {\n if (typeof prototype.requestSubmit == \"function\") return\n\n prototype.requestSubmit = function (submitter) {\n if (submitter) {\n validateSubmitter(submitter, this);\n submitter.click();\n } else {\n submitter = document.createElement(\"input\");\n submitter.type = \"submit\";\n submitter.hidden = true;\n this.appendChild(submitter);\n submitter.click();\n this.removeChild(submitter);\n }\n };\n\n function validateSubmitter(submitter, form) {\n submitter instanceof HTMLElement || raise(TypeError, \"parameter 1 is not of type 'HTMLElement'\");\n submitter.type == \"submit\" || raise(TypeError, \"The specified element is not a submit button\");\n submitter.form == form ||\n raise(DOMException, \"The specified element is not owned by this form element\", \"NotFoundError\");\n }\n\n function raise(errorConstructor, message, name) {\n throw new errorConstructor(\"Failed to execute 'requestSubmit' on 'HTMLFormElement': \" + message + \".\", name)\n }\n})(HTMLFormElement.prototype);\n\nconst submittersByForm = new WeakMap();\n\nfunction findSubmitterFromClickTarget(target) {\n const element = target instanceof Element ? target : target instanceof Node ? target.parentElement : null;\n const candidate = element ? element.closest(\"input, button\") : null;\n return candidate?.type == \"submit\" ? candidate : null\n}\n\nfunction clickCaptured(event) {\n const submitter = findSubmitterFromClickTarget(event.target);\n\n if (submitter && submitter.form) {\n submittersByForm.set(submitter.form, submitter);\n }\n}\n\n(function () {\n if (\"submitter\" in Event.prototype) return\n\n let prototype = window.Event.prototype;\n // Certain versions of Safari 15 have a bug where they won't\n // populate the submitter. This hurts TurboDrive's enable/disable detection.\n // See https://bugs.webkit.org/show_bug.cgi?id=229660\n if (\"SubmitEvent\" in window) {\n const prototypeOfSubmitEvent = window.SubmitEvent.prototype;\n\n if (/Apple Computer/.test(navigator.vendor) && !(\"submitter\" in prototypeOfSubmitEvent)) {\n prototype = prototypeOfSubmitEvent;\n } else {\n return // polyfill not needed\n }\n }\n\n addEventListener(\"click\", clickCaptured, true);\n\n Object.defineProperty(prototype, \"submitter\", {\n get() {\n if (this.type == \"submit\" && this.target instanceof HTMLFormElement) {\n return submittersByForm.get(this.target)\n }\n }\n });\n})();\n\nconst FrameLoadingStyle = {\n eager: \"eager\",\n lazy: \"lazy\"\n};\n\n/**\n * Contains a fragment of HTML which is updated based on navigation within\n * it (e.g. via links or form submissions).\n *\n * @customElement turbo-frame\n * @example\n * \n * \n * Show all expanded messages in this frame.\n * \n *\n *
\n * Show response from this form within this frame.\n *
\n *
\n */\nclass FrameElement extends HTMLElement {\n static delegateConstructor = undefined\n\n loaded = Promise.resolve()\n\n static get observedAttributes() {\n return [\"disabled\", \"loading\", \"src\"]\n }\n\n constructor() {\n super();\n this.delegate = new FrameElement.delegateConstructor(this);\n }\n\n connectedCallback() {\n this.delegate.connect();\n }\n\n disconnectedCallback() {\n this.delegate.disconnect();\n }\n\n reload() {\n return this.delegate.sourceURLReloaded()\n }\n\n attributeChangedCallback(name) {\n if (name == \"loading\") {\n this.delegate.loadingStyleChanged();\n } else if (name == \"src\") {\n this.delegate.sourceURLChanged();\n } else if (name == \"disabled\") {\n this.delegate.disabledChanged();\n }\n }\n\n /**\n * Gets the URL to lazily load source HTML from\n */\n get src() {\n return this.getAttribute(\"src\")\n }\n\n /**\n * Sets the URL to lazily load source HTML from\n */\n set src(value) {\n if (value) {\n this.setAttribute(\"src\", value);\n } else {\n this.removeAttribute(\"src\");\n }\n }\n\n /**\n * Gets the refresh mode for the frame.\n */\n get refresh() {\n return this.getAttribute(\"refresh\")\n }\n\n /**\n * Sets the refresh mode for the frame.\n */\n set refresh(value) {\n if (value) {\n this.setAttribute(\"refresh\", value);\n } else {\n this.removeAttribute(\"refresh\");\n }\n }\n\n get shouldReloadWithMorph() {\n return this.src && this.refresh === \"morph\"\n }\n\n /**\n * Determines if the element is loading\n */\n get loading() {\n return frameLoadingStyleFromString(this.getAttribute(\"loading\") || \"\")\n }\n\n /**\n * Sets the value of if the element is loading\n */\n set loading(value) {\n if (value) {\n this.setAttribute(\"loading\", value);\n } else {\n this.removeAttribute(\"loading\");\n }\n }\n\n /**\n * Gets the disabled state of the frame.\n *\n * If disabled, no requests will be intercepted by the frame.\n */\n get disabled() {\n return this.hasAttribute(\"disabled\")\n }\n\n /**\n * Sets the disabled state of the frame.\n *\n * If disabled, no requests will be intercepted by the frame.\n */\n set disabled(value) {\n if (value) {\n this.setAttribute(\"disabled\", \"\");\n } else {\n this.removeAttribute(\"disabled\");\n }\n }\n\n /**\n * Gets the autoscroll state of the frame.\n *\n * If true, the frame will be scrolled into view automatically on update.\n */\n get autoscroll() {\n return this.hasAttribute(\"autoscroll\")\n }\n\n /**\n * Sets the autoscroll state of the frame.\n *\n * If true, the frame will be scrolled into view automatically on update.\n */\n set autoscroll(value) {\n if (value) {\n this.setAttribute(\"autoscroll\", \"\");\n } else {\n this.removeAttribute(\"autoscroll\");\n }\n }\n\n /**\n * Determines if the element has finished loading\n */\n get complete() {\n return !this.delegate.isLoading\n }\n\n /**\n * Gets the active state of the frame.\n *\n * If inactive, source changes will not be observed.\n */\n get isActive() {\n return this.ownerDocument === document && !this.isPreview\n }\n\n /**\n * Sets the active state of the frame.\n *\n * If inactive, source changes will not be observed.\n */\n get isPreview() {\n return this.ownerDocument?.documentElement?.hasAttribute(\"data-turbo-preview\")\n }\n}\n\nfunction frameLoadingStyleFromString(style) {\n switch (style.toLowerCase()) {\n case \"lazy\":\n return FrameLoadingStyle.lazy\n default:\n return FrameLoadingStyle.eager\n }\n}\n\nconst drive = {\n enabled: true,\n progressBarDelay: 500,\n unvisitableExtensions: new Set(\n [\n \".7z\", \".aac\", \".apk\", \".avi\", \".bmp\", \".bz2\", \".css\", \".csv\", \".deb\", \".dmg\", \".doc\",\n \".docx\", \".exe\", \".gif\", \".gz\", \".heic\", \".heif\", \".ico\", \".iso\", \".jpeg\", \".jpg\",\n \".js\", \".json\", \".m4a\", \".mkv\", \".mov\", \".mp3\", \".mp4\", \".mpeg\", \".mpg\", \".msi\",\n \".ogg\", \".ogv\", \".pdf\", \".pkg\", \".png\", \".ppt\", \".pptx\", \".rar\", \".rtf\",\n \".svg\", \".tar\", \".tif\", \".tiff\", \".txt\", \".wav\", \".webm\", \".webp\", \".wma\", \".wmv\",\n \".xls\", \".xlsx\", \".xml\", \".zip\"\n ]\n )\n};\n\nfunction activateScriptElement(element) {\n if (element.getAttribute(\"data-turbo-eval\") == \"false\") {\n return element\n } else {\n const createdScriptElement = document.createElement(\"script\");\n const cspNonce = getMetaContent(\"csp-nonce\");\n if (cspNonce) {\n createdScriptElement.nonce = cspNonce;\n }\n createdScriptElement.textContent = element.textContent;\n createdScriptElement.async = false;\n copyElementAttributes(createdScriptElement, element);\n return createdScriptElement\n }\n}\n\nfunction copyElementAttributes(destinationElement, sourceElement) {\n for (const { name, value } of sourceElement.attributes) {\n destinationElement.setAttribute(name, value);\n }\n}\n\nfunction createDocumentFragment(html) {\n const template = document.createElement(\"template\");\n template.innerHTML = html;\n return template.content\n}\n\nfunction dispatch(eventName, { target, cancelable, detail } = {}) {\n const event = new CustomEvent(eventName, {\n cancelable,\n bubbles: true,\n composed: true,\n detail\n });\n\n if (target && target.isConnected) {\n target.dispatchEvent(event);\n } else {\n document.documentElement.dispatchEvent(event);\n }\n\n return event\n}\n\nfunction cancelEvent(event) {\n event.preventDefault();\n event.stopImmediatePropagation();\n}\n\nfunction nextRepaint() {\n if (document.visibilityState === \"hidden\") {\n return nextEventLoopTick()\n } else {\n return nextAnimationFrame()\n }\n}\n\nfunction nextAnimationFrame() {\n return new Promise((resolve) => requestAnimationFrame(() => resolve()))\n}\n\nfunction nextEventLoopTick() {\n return new Promise((resolve) => setTimeout(() => resolve(), 0))\n}\n\nfunction nextMicrotask() {\n return Promise.resolve()\n}\n\nfunction parseHTMLDocument(html = \"\") {\n return new DOMParser().parseFromString(html, \"text/html\")\n}\n\nfunction unindent(strings, ...values) {\n const lines = interpolate(strings, values).replace(/^\\n/, \"\").split(\"\\n\");\n const match = lines[0].match(/^\\s+/);\n const indent = match ? match[0].length : 0;\n return lines.map((line) => line.slice(indent)).join(\"\\n\")\n}\n\nfunction interpolate(strings, values) {\n return strings.reduce((result, string, i) => {\n const value = values[i] == undefined ? \"\" : values[i];\n return result + string + value\n }, \"\")\n}\n\nfunction uuid() {\n return Array.from({ length: 36 })\n .map((_, i) => {\n if (i == 8 || i == 13 || i == 18 || i == 23) {\n return \"-\"\n } else if (i == 14) {\n return \"4\"\n } else if (i == 19) {\n return (Math.floor(Math.random() * 4) + 8).toString(16)\n } else {\n return Math.floor(Math.random() * 15).toString(16)\n }\n })\n .join(\"\")\n}\n\nfunction getAttribute(attributeName, ...elements) {\n for (const value of elements.map((element) => element?.getAttribute(attributeName))) {\n if (typeof value == \"string\") return value\n }\n\n return null\n}\n\nfunction hasAttribute(attributeName, ...elements) {\n return elements.some((element) => element && element.hasAttribute(attributeName))\n}\n\nfunction markAsBusy(...elements) {\n for (const element of elements) {\n if (element.localName == \"turbo-frame\") {\n element.setAttribute(\"busy\", \"\");\n }\n element.setAttribute(\"aria-busy\", \"true\");\n }\n}\n\nfunction clearBusyState(...elements) {\n for (const element of elements) {\n if (element.localName == \"turbo-frame\") {\n element.removeAttribute(\"busy\");\n }\n\n element.removeAttribute(\"aria-busy\");\n }\n}\n\nfunction waitForLoad(element, timeoutInMilliseconds = 2000) {\n return new Promise((resolve) => {\n const onComplete = () => {\n element.removeEventListener(\"error\", onComplete);\n element.removeEventListener(\"load\", onComplete);\n resolve();\n };\n\n element.addEventListener(\"load\", onComplete, { once: true });\n element.addEventListener(\"error\", onComplete, { once: true });\n setTimeout(resolve, timeoutInMilliseconds);\n })\n}\n\nfunction getHistoryMethodForAction(action) {\n switch (action) {\n case \"replace\":\n return history.replaceState\n case \"advance\":\n case \"restore\":\n return history.pushState\n }\n}\n\nfunction isAction(action) {\n return action == \"advance\" || action == \"replace\" || action == \"restore\"\n}\n\nfunction getVisitAction(...elements) {\n const action = getAttribute(\"data-turbo-action\", ...elements);\n\n return isAction(action) ? action : null\n}\n\nfunction getMetaElement(name) {\n return document.querySelector(`meta[name=\"${name}\"]`)\n}\n\nfunction getMetaContent(name) {\n const element = getMetaElement(name);\n return element && element.content\n}\n\nfunction setMetaContent(name, content) {\n let element = getMetaElement(name);\n\n if (!element) {\n element = document.createElement(\"meta\");\n element.setAttribute(\"name\", name);\n\n document.head.appendChild(element);\n }\n\n element.setAttribute(\"content\", content);\n\n return element\n}\n\nfunction findClosestRecursively(element, selector) {\n if (element instanceof Element) {\n return (\n element.closest(selector) || findClosestRecursively(element.assignedSlot || element.getRootNode()?.host, selector)\n )\n }\n}\n\nfunction elementIsFocusable(element) {\n const inertDisabledOrHidden = \"[inert], :disabled, [hidden], details:not([open]), dialog:not([open])\";\n\n return !!element && element.closest(inertDisabledOrHidden) == null && typeof element.focus == \"function\"\n}\n\nfunction queryAutofocusableElement(elementOrDocumentFragment) {\n return Array.from(elementOrDocumentFragment.querySelectorAll(\"[autofocus]\")).find(elementIsFocusable)\n}\n\nasync function around(callback, reader) {\n const before = reader();\n\n callback();\n\n await nextAnimationFrame();\n\n const after = reader();\n\n return [before, after]\n}\n\nfunction doesNotTargetIFrame(name) {\n if (name === \"_blank\") {\n return false\n } else if (name) {\n for (const element of document.getElementsByName(name)) {\n if (element instanceof HTMLIFrameElement) return false\n }\n\n return true\n } else {\n return true\n }\n}\n\nfunction findLinkFromClickTarget(target) {\n return findClosestRecursively(target, \"a[href]:not([target^=_]):not([download])\")\n}\n\nfunction getLocationForLink(link) {\n return expandURL(link.getAttribute(\"href\") || \"\")\n}\n\nfunction debounce(fn, delay) {\n let timeoutId = null;\n\n return (...args) => {\n const callback = () => fn.apply(this, args);\n clearTimeout(timeoutId);\n timeoutId = setTimeout(callback, delay);\n }\n}\n\nconst submitter = {\n \"aria-disabled\": {\n beforeSubmit: submitter => {\n submitter.setAttribute(\"aria-disabled\", \"true\");\n submitter.addEventListener(\"click\", cancelEvent);\n },\n\n afterSubmit: submitter => {\n submitter.removeAttribute(\"aria-disabled\");\n submitter.removeEventListener(\"click\", cancelEvent);\n }\n },\n\n \"disabled\": {\n beforeSubmit: submitter => submitter.disabled = true,\n afterSubmit: submitter => submitter.disabled = false\n }\n};\n\nclass Config {\n #submitter = null\n\n constructor(config) {\n Object.assign(this, config);\n }\n\n get submitter() {\n return this.#submitter\n }\n\n set submitter(value) {\n this.#submitter = submitter[value] || value;\n }\n}\n\nconst forms = new Config({\n mode: \"on\",\n submitter: \"disabled\"\n});\n\nconst config = {\n drive,\n forms\n};\n\nfunction expandURL(locatable) {\n return new URL(locatable.toString(), document.baseURI)\n}\n\nfunction getAnchor(url) {\n let anchorMatch;\n if (url.hash) {\n return url.hash.slice(1)\n // eslint-disable-next-line no-cond-assign\n } else if ((anchorMatch = url.href.match(/#(.*)$/))) {\n return anchorMatch[1]\n }\n}\n\nfunction getAction$1(form, submitter) {\n const action = submitter?.getAttribute(\"formaction\") || form.getAttribute(\"action\") || form.action;\n\n return expandURL(action)\n}\n\nfunction getExtension(url) {\n return (getLastPathComponent(url).match(/\\.[^.]*$/) || [])[0] || \"\"\n}\n\nfunction isPrefixedBy(baseURL, url) {\n const prefix = getPrefix(url);\n return baseURL.href === expandURL(prefix).href || baseURL.href.startsWith(prefix)\n}\n\nfunction locationIsVisitable(location, rootLocation) {\n return isPrefixedBy(location, rootLocation) && !config.drive.unvisitableExtensions.has(getExtension(location))\n}\n\nfunction getRequestURL(url) {\n const anchor = getAnchor(url);\n return anchor != null ? url.href.slice(0, -(anchor.length + 1)) : url.href\n}\n\nfunction toCacheKey(url) {\n return getRequestURL(url)\n}\n\nfunction urlsAreEqual(left, right) {\n return expandURL(left).href == expandURL(right).href\n}\n\nfunction getPathComponents(url) {\n return url.pathname.split(\"/\").slice(1)\n}\n\nfunction getLastPathComponent(url) {\n return getPathComponents(url).slice(-1)[0]\n}\n\nfunction getPrefix(url) {\n return addTrailingSlash(url.origin + url.pathname)\n}\n\nfunction addTrailingSlash(value) {\n return value.endsWith(\"/\") ? value : value + \"/\"\n}\n\nclass FetchResponse {\n constructor(response) {\n this.response = response;\n }\n\n get succeeded() {\n return this.response.ok\n }\n\n get failed() {\n return !this.succeeded\n }\n\n get clientError() {\n return this.statusCode >= 400 && this.statusCode <= 499\n }\n\n get serverError() {\n return this.statusCode >= 500 && this.statusCode <= 599\n }\n\n get redirected() {\n return this.response.redirected\n }\n\n get location() {\n return expandURL(this.response.url)\n }\n\n get isHTML() {\n return this.contentType && this.contentType.match(/^(?:text\\/([^\\s;,]+\\b)?html|application\\/xhtml\\+xml)\\b/)\n }\n\n get statusCode() {\n return this.response.status\n }\n\n get contentType() {\n return this.header(\"Content-Type\")\n }\n\n get responseText() {\n return this.response.clone().text()\n }\n\n get responseHTML() {\n if (this.isHTML) {\n return this.response.clone().text()\n } else {\n return Promise.resolve(undefined)\n }\n }\n\n header(name) {\n return this.response.headers.get(name)\n }\n}\n\nclass LimitedSet extends Set {\n constructor(maxSize) {\n super();\n this.maxSize = maxSize;\n }\n\n add(value) {\n if (this.size >= this.maxSize) {\n const iterator = this.values();\n const oldestValue = iterator.next().value;\n this.delete(oldestValue);\n }\n super.add(value);\n }\n}\n\nconst recentRequests = new LimitedSet(20);\n\nconst nativeFetch = window.fetch;\n\nfunction fetchWithTurboHeaders(url, options = {}) {\n const modifiedHeaders = new Headers(options.headers || {});\n const requestUID = uuid();\n recentRequests.add(requestUID);\n modifiedHeaders.append(\"X-Turbo-Request-Id\", requestUID);\n\n return nativeFetch(url, {\n ...options,\n headers: modifiedHeaders\n })\n}\n\nfunction fetchMethodFromString(method) {\n switch (method.toLowerCase()) {\n case \"get\":\n return FetchMethod.get\n case \"post\":\n return FetchMethod.post\n case \"put\":\n return FetchMethod.put\n case \"patch\":\n return FetchMethod.patch\n case \"delete\":\n return FetchMethod.delete\n }\n}\n\nconst FetchMethod = {\n get: \"get\",\n post: \"post\",\n put: \"put\",\n patch: \"patch\",\n delete: \"delete\"\n};\n\nfunction fetchEnctypeFromString(encoding) {\n switch (encoding.toLowerCase()) {\n case FetchEnctype.multipart:\n return FetchEnctype.multipart\n case FetchEnctype.plain:\n return FetchEnctype.plain\n default:\n return FetchEnctype.urlEncoded\n }\n}\n\nconst FetchEnctype = {\n urlEncoded: \"application/x-www-form-urlencoded\",\n multipart: \"multipart/form-data\",\n plain: \"text/plain\"\n};\n\nclass FetchRequest {\n abortController = new AbortController()\n #resolveRequestPromise = (_value) => {}\n\n constructor(delegate, method, location, requestBody = new URLSearchParams(), target = null, enctype = FetchEnctype.urlEncoded) {\n const [url, body] = buildResourceAndBody(expandURL(location), method, requestBody, enctype);\n\n this.delegate = delegate;\n this.url = url;\n this.target = target;\n this.fetchOptions = {\n credentials: \"same-origin\",\n redirect: \"follow\",\n method: method.toUpperCase(),\n headers: { ...this.defaultHeaders },\n body: body,\n signal: this.abortSignal,\n referrer: this.delegate.referrer?.href\n };\n this.enctype = enctype;\n }\n\n get method() {\n return this.fetchOptions.method\n }\n\n set method(value) {\n const fetchBody = this.isSafe ? this.url.searchParams : this.fetchOptions.body || new FormData();\n const fetchMethod = fetchMethodFromString(value) || FetchMethod.get;\n\n this.url.search = \"\";\n\n const [url, body] = buildResourceAndBody(this.url, fetchMethod, fetchBody, this.enctype);\n\n this.url = url;\n this.fetchOptions.body = body;\n this.fetchOptions.method = fetchMethod.toUpperCase();\n }\n\n get headers() {\n return this.fetchOptions.headers\n }\n\n set headers(value) {\n this.fetchOptions.headers = value;\n }\n\n get body() {\n if (this.isSafe) {\n return this.url.searchParams\n } else {\n return this.fetchOptions.body\n }\n }\n\n set body(value) {\n this.fetchOptions.body = value;\n }\n\n get location() {\n return this.url\n }\n\n get params() {\n return this.url.searchParams\n }\n\n get entries() {\n return this.body ? Array.from(this.body.entries()) : []\n }\n\n cancel() {\n this.abortController.abort();\n }\n\n async perform() {\n const { fetchOptions } = this;\n this.delegate.prepareRequest(this);\n const event = await this.#allowRequestToBeIntercepted(fetchOptions);\n try {\n this.delegate.requestStarted(this);\n\n if (event.detail.fetchRequest) {\n this.response = event.detail.fetchRequest.response;\n } else {\n this.response = fetchWithTurboHeaders(this.url.href, fetchOptions);\n }\n\n const response = await this.response;\n return await this.receive(response)\n } catch (error) {\n if (error.name !== \"AbortError\") {\n if (this.#willDelegateErrorHandling(error)) {\n this.delegate.requestErrored(this, error);\n }\n throw error\n }\n } finally {\n this.delegate.requestFinished(this);\n }\n }\n\n async receive(response) {\n const fetchResponse = new FetchResponse(response);\n const event = dispatch(\"turbo:before-fetch-response\", {\n cancelable: true,\n detail: { fetchResponse },\n target: this.target\n });\n if (event.defaultPrevented) {\n this.delegate.requestPreventedHandlingResponse(this, fetchResponse);\n } else if (fetchResponse.succeeded) {\n this.delegate.requestSucceededWithResponse(this, fetchResponse);\n } else {\n this.delegate.requestFailedWithResponse(this, fetchResponse);\n }\n return fetchResponse\n }\n\n get defaultHeaders() {\n return {\n Accept: \"text/html, application/xhtml+xml\"\n }\n }\n\n get isSafe() {\n return isSafe(this.method)\n }\n\n get abortSignal() {\n return this.abortController.signal\n }\n\n acceptResponseType(mimeType) {\n this.headers[\"Accept\"] = [mimeType, this.headers[\"Accept\"]].join(\", \");\n }\n\n async #allowRequestToBeIntercepted(fetchOptions) {\n const requestInterception = new Promise((resolve) => (this.#resolveRequestPromise = resolve));\n const event = dispatch(\"turbo:before-fetch-request\", {\n cancelable: true,\n detail: {\n fetchOptions,\n url: this.url,\n resume: this.#resolveRequestPromise\n },\n target: this.target\n });\n this.url = event.detail.url;\n if (event.defaultPrevented) await requestInterception;\n\n return event\n }\n\n #willDelegateErrorHandling(error) {\n const event = dispatch(\"turbo:fetch-request-error\", {\n target: this.target,\n cancelable: true,\n detail: { request: this, error: error }\n });\n\n return !event.defaultPrevented\n }\n}\n\nfunction isSafe(fetchMethod) {\n return fetchMethodFromString(fetchMethod) == FetchMethod.get\n}\n\nfunction buildResourceAndBody(resource, method, requestBody, enctype) {\n const searchParams =\n Array.from(requestBody).length > 0 ? new URLSearchParams(entriesExcludingFiles(requestBody)) : resource.searchParams;\n\n if (isSafe(method)) {\n return [mergeIntoURLSearchParams(resource, searchParams), null]\n } else if (enctype == FetchEnctype.urlEncoded) {\n return [resource, searchParams]\n } else {\n return [resource, requestBody]\n }\n}\n\nfunction entriesExcludingFiles(requestBody) {\n const entries = [];\n\n for (const [name, value] of requestBody) {\n if (value instanceof File) continue\n else entries.push([name, value]);\n }\n\n return entries\n}\n\nfunction mergeIntoURLSearchParams(url, requestBody) {\n const searchParams = new URLSearchParams(entriesExcludingFiles(requestBody));\n\n url.search = searchParams.toString();\n\n return url\n}\n\nclass AppearanceObserver {\n started = false\n\n constructor(delegate, element) {\n this.delegate = delegate;\n this.element = element;\n this.intersectionObserver = new IntersectionObserver(this.intersect);\n }\n\n start() {\n if (!this.started) {\n this.started = true;\n this.intersectionObserver.observe(this.element);\n }\n }\n\n stop() {\n if (this.started) {\n this.started = false;\n this.intersectionObserver.unobserve(this.element);\n }\n }\n\n intersect = (entries) => {\n const lastEntry = entries.slice(-1)[0];\n if (lastEntry?.isIntersecting) {\n this.delegate.elementAppearedInViewport(this.element);\n }\n }\n}\n\nclass StreamMessage {\n static contentType = \"text/vnd.turbo-stream.html\"\n\n static wrap(message) {\n if (typeof message == \"string\") {\n return new this(createDocumentFragment(message))\n } else {\n return message\n }\n }\n\n constructor(fragment) {\n this.fragment = importStreamElements(fragment);\n }\n}\n\nfunction importStreamElements(fragment) {\n for (const element of fragment.querySelectorAll(\"turbo-stream\")) {\n const streamElement = document.importNode(element, true);\n\n for (const inertScriptElement of streamElement.templateElement.content.querySelectorAll(\"script\")) {\n inertScriptElement.replaceWith(activateScriptElement(inertScriptElement));\n }\n\n element.replaceWith(streamElement);\n }\n\n return fragment\n}\n\nconst PREFETCH_DELAY = 100;\n\nclass PrefetchCache {\n #prefetchTimeout = null\n #prefetched = null\n\n get(url) {\n if (this.#prefetched && this.#prefetched.url === url && this.#prefetched.expire > Date.now()) {\n return this.#prefetched.request\n }\n }\n\n setLater(url, request, ttl) {\n this.clear();\n\n this.#prefetchTimeout = setTimeout(() => {\n request.perform();\n this.set(url, request, ttl);\n this.#prefetchTimeout = null;\n }, PREFETCH_DELAY);\n }\n\n set(url, request, ttl) {\n this.#prefetched = { url, request, expire: new Date(new Date().getTime() + ttl) };\n }\n\n clear() {\n if (this.#prefetchTimeout) clearTimeout(this.#prefetchTimeout);\n this.#prefetched = null;\n }\n}\n\nconst cacheTtl = 10 * 1000;\nconst prefetchCache = new PrefetchCache();\n\nconst FormSubmissionState = {\n initialized: \"initialized\",\n requesting: \"requesting\",\n waiting: \"waiting\",\n receiving: \"receiving\",\n stopping: \"stopping\",\n stopped: \"stopped\"\n};\n\nclass FormSubmission {\n state = FormSubmissionState.initialized\n\n static confirmMethod(message) {\n return Promise.resolve(confirm(message))\n }\n\n constructor(delegate, formElement, submitter, mustRedirect = false) {\n const method = getMethod(formElement, submitter);\n const action = getAction(getFormAction(formElement, submitter), method);\n const body = buildFormData(formElement, submitter);\n const enctype = getEnctype(formElement, submitter);\n\n this.delegate = delegate;\n this.formElement = formElement;\n this.submitter = submitter;\n this.fetchRequest = new FetchRequest(this, method, action, body, formElement, enctype);\n this.mustRedirect = mustRedirect;\n }\n\n get method() {\n return this.fetchRequest.method\n }\n\n set method(value) {\n this.fetchRequest.method = value;\n }\n\n get action() {\n return this.fetchRequest.url.toString()\n }\n\n set action(value) {\n this.fetchRequest.url = expandURL(value);\n }\n\n get body() {\n return this.fetchRequest.body\n }\n\n get enctype() {\n return this.fetchRequest.enctype\n }\n\n get isSafe() {\n return this.fetchRequest.isSafe\n }\n\n get location() {\n return this.fetchRequest.url\n }\n\n // The submission process\n\n async start() {\n const { initialized, requesting } = FormSubmissionState;\n const confirmationMessage = getAttribute(\"data-turbo-confirm\", this.submitter, this.formElement);\n\n if (typeof confirmationMessage === \"string\") {\n const confirmMethod = typeof config.forms.confirm === \"function\" ?\n config.forms.confirm :\n FormSubmission.confirmMethod;\n\n const answer = await confirmMethod(confirmationMessage, this.formElement, this.submitter);\n if (!answer) {\n return\n }\n }\n\n if (this.state == initialized) {\n this.state = requesting;\n return this.fetchRequest.perform()\n }\n }\n\n stop() {\n const { stopping, stopped } = FormSubmissionState;\n if (this.state != stopping && this.state != stopped) {\n this.state = stopping;\n this.fetchRequest.cancel();\n return true\n }\n }\n\n // Fetch request delegate\n\n prepareRequest(request) {\n if (!request.isSafe) {\n const token = getCookieValue(getMetaContent(\"csrf-param\")) || getMetaContent(\"csrf-token\");\n if (token) {\n request.headers[\"X-CSRF-Token\"] = token;\n }\n }\n\n if (this.requestAcceptsTurboStreamResponse(request)) {\n request.acceptResponseType(StreamMessage.contentType);\n }\n }\n\n requestStarted(_request) {\n this.state = FormSubmissionState.waiting;\n if (this.submitter) config.forms.submitter.beforeSubmit(this.submitter);\n this.setSubmitsWith();\n markAsBusy(this.formElement);\n dispatch(\"turbo:submit-start\", {\n target: this.formElement,\n detail: { formSubmission: this }\n });\n this.delegate.formSubmissionStarted(this);\n }\n\n requestPreventedHandlingResponse(request, response) {\n prefetchCache.clear();\n\n this.result = { success: response.succeeded, fetchResponse: response };\n }\n\n requestSucceededWithResponse(request, response) {\n if (response.clientError || response.serverError) {\n this.delegate.formSubmissionFailedWithResponse(this, response);\n return\n }\n\n prefetchCache.clear();\n\n if (this.requestMustRedirect(request) && responseSucceededWithoutRedirect(response)) {\n const error = new Error(\"Form responses must redirect to another location\");\n this.delegate.formSubmissionErrored(this, error);\n } else {\n this.state = FormSubmissionState.receiving;\n this.result = { success: true, fetchResponse: response };\n this.delegate.formSubmissionSucceededWithResponse(this, response);\n }\n }\n\n requestFailedWithResponse(request, response) {\n this.result = { success: false, fetchResponse: response };\n this.delegate.formSubmissionFailedWithResponse(this, response);\n }\n\n requestErrored(request, error) {\n this.result = { success: false, error };\n this.delegate.formSubmissionErrored(this, error);\n }\n\n requestFinished(_request) {\n this.state = FormSubmissionState.stopped;\n if (this.submitter) config.forms.submitter.afterSubmit(this.submitter);\n this.resetSubmitterText();\n clearBusyState(this.formElement);\n dispatch(\"turbo:submit-end\", {\n target: this.formElement,\n detail: { formSubmission: this, ...this.result }\n });\n this.delegate.formSubmissionFinished(this);\n }\n\n // Private\n\n setSubmitsWith() {\n if (!this.submitter || !this.submitsWith) return\n\n if (this.submitter.matches(\"button\")) {\n this.originalSubmitText = this.submitter.innerHTML;\n this.submitter.innerHTML = this.submitsWith;\n } else if (this.submitter.matches(\"input\")) {\n const input = this.submitter;\n this.originalSubmitText = input.value;\n input.value = this.submitsWith;\n }\n }\n\n resetSubmitterText() {\n if (!this.submitter || !this.originalSubmitText) return\n\n if (this.submitter.matches(\"button\")) {\n this.submitter.innerHTML = this.originalSubmitText;\n } else if (this.submitter.matches(\"input\")) {\n const input = this.submitter;\n input.value = this.originalSubmitText;\n }\n }\n\n requestMustRedirect(request) {\n return !request.isSafe && this.mustRedirect\n }\n\n requestAcceptsTurboStreamResponse(request) {\n return !request.isSafe || hasAttribute(\"data-turbo-stream\", this.submitter, this.formElement)\n }\n\n get submitsWith() {\n return this.submitter?.getAttribute(\"data-turbo-submits-with\")\n }\n}\n\nfunction buildFormData(formElement, submitter) {\n const formData = new FormData(formElement);\n const name = submitter?.getAttribute(\"name\");\n const value = submitter?.getAttribute(\"value\");\n\n if (name) {\n formData.append(name, value || \"\");\n }\n\n return formData\n}\n\nfunction getCookieValue(cookieName) {\n if (cookieName != null) {\n const cookies = document.cookie ? document.cookie.split(\"; \") : [];\n const cookie = cookies.find((cookie) => cookie.startsWith(cookieName));\n if (cookie) {\n const value = cookie.split(\"=\").slice(1).join(\"=\");\n return value ? decodeURIComponent(value) : undefined\n }\n }\n}\n\nfunction responseSucceededWithoutRedirect(response) {\n return response.statusCode == 200 && !response.redirected\n}\n\nfunction getFormAction(formElement, submitter) {\n const formElementAction = typeof formElement.action === \"string\" ? formElement.action : null;\n\n if (submitter?.hasAttribute(\"formaction\")) {\n return submitter.getAttribute(\"formaction\") || \"\"\n } else {\n return formElement.getAttribute(\"action\") || formElementAction || \"\"\n }\n}\n\nfunction getAction(formAction, fetchMethod) {\n const action = expandURL(formAction);\n\n if (isSafe(fetchMethod)) {\n action.search = \"\";\n }\n\n return action\n}\n\nfunction getMethod(formElement, submitter) {\n const method = submitter?.getAttribute(\"formmethod\") || formElement.getAttribute(\"method\") || \"\";\n return fetchMethodFromString(method.toLowerCase()) || FetchMethod.get\n}\n\nfunction getEnctype(formElement, submitter) {\n return fetchEnctypeFromString(submitter?.getAttribute(\"formenctype\") || formElement.enctype)\n}\n\nclass Snapshot {\n constructor(element) {\n this.element = element;\n }\n\n get activeElement() {\n return this.element.ownerDocument.activeElement\n }\n\n get children() {\n return [...this.element.children]\n }\n\n hasAnchor(anchor) {\n return this.getElementForAnchor(anchor) != null\n }\n\n getElementForAnchor(anchor) {\n return anchor ? this.element.querySelector(`[id='${anchor}'], a[name='${anchor}']`) : null\n }\n\n get isConnected() {\n return this.element.isConnected\n }\n\n get firstAutofocusableElement() {\n return queryAutofocusableElement(this.element)\n }\n\n get permanentElements() {\n return queryPermanentElementsAll(this.element)\n }\n\n getPermanentElementById(id) {\n return getPermanentElementById(this.element, id)\n }\n\n getPermanentElementMapForSnapshot(snapshot) {\n const permanentElementMap = {};\n\n for (const currentPermanentElement of this.permanentElements) {\n const { id } = currentPermanentElement;\n const newPermanentElement = snapshot.getPermanentElementById(id);\n if (newPermanentElement) {\n permanentElementMap[id] = [currentPermanentElement, newPermanentElement];\n }\n }\n\n return permanentElementMap\n }\n}\n\nfunction getPermanentElementById(node, id) {\n return node.querySelector(`#${id}[data-turbo-permanent]`)\n}\n\nfunction queryPermanentElementsAll(node) {\n return node.querySelectorAll(\"[id][data-turbo-permanent]\")\n}\n\nclass FormSubmitObserver {\n started = false\n\n constructor(delegate, eventTarget) {\n this.delegate = delegate;\n this.eventTarget = eventTarget;\n }\n\n start() {\n if (!this.started) {\n this.eventTarget.addEventListener(\"submit\", this.submitCaptured, true);\n this.started = true;\n }\n }\n\n stop() {\n if (this.started) {\n this.eventTarget.removeEventListener(\"submit\", this.submitCaptured, true);\n this.started = false;\n }\n }\n\n submitCaptured = () => {\n this.eventTarget.removeEventListener(\"submit\", this.submitBubbled, false);\n this.eventTarget.addEventListener(\"submit\", this.submitBubbled, false);\n }\n\n submitBubbled = (event) => {\n if (!event.defaultPrevented) {\n const form = event.target instanceof HTMLFormElement ? event.target : undefined;\n const submitter = event.submitter || undefined;\n\n if (\n form &&\n submissionDoesNotDismissDialog(form, submitter) &&\n submissionDoesNotTargetIFrame(form, submitter) &&\n this.delegate.willSubmitForm(form, submitter)\n ) {\n event.preventDefault();\n event.stopImmediatePropagation();\n this.delegate.formSubmitted(form, submitter);\n }\n }\n }\n}\n\nfunction submissionDoesNotDismissDialog(form, submitter) {\n const method = submitter?.getAttribute(\"formmethod\") || form.getAttribute(\"method\");\n\n return method != \"dialog\"\n}\n\nfunction submissionDoesNotTargetIFrame(form, submitter) {\n const target = submitter?.getAttribute(\"formtarget\") || form.getAttribute(\"target\");\n\n return doesNotTargetIFrame(target)\n}\n\nclass View {\n #resolveRenderPromise = (_value) => {}\n #resolveInterceptionPromise = (_value) => {}\n\n constructor(delegate, element) {\n this.delegate = delegate;\n this.element = element;\n }\n\n // Scrolling\n\n scrollToAnchor(anchor) {\n const element = this.snapshot.getElementForAnchor(anchor);\n if (element) {\n this.scrollToElement(element);\n this.focusElement(element);\n } else {\n this.scrollToPosition({ x: 0, y: 0 });\n }\n }\n\n scrollToAnchorFromLocation(location) {\n this.scrollToAnchor(getAnchor(location));\n }\n\n scrollToElement(element) {\n element.scrollIntoView();\n }\n\n focusElement(element) {\n if (element instanceof HTMLElement) {\n if (element.hasAttribute(\"tabindex\")) {\n element.focus();\n } else {\n element.setAttribute(\"tabindex\", \"-1\");\n element.focus();\n element.removeAttribute(\"tabindex\");\n }\n }\n }\n\n scrollToPosition({ x, y }) {\n this.scrollRoot.scrollTo(x, y);\n }\n\n scrollToTop() {\n this.scrollToPosition({ x: 0, y: 0 });\n }\n\n get scrollRoot() {\n return window\n }\n\n // Rendering\n\n async render(renderer) {\n const { isPreview, shouldRender, willRender, newSnapshot: snapshot } = renderer;\n\n // A workaround to ignore tracked element mismatch reloads when performing\n // a promoted Visit from a frame navigation\n const shouldInvalidate = willRender;\n\n if (shouldRender) {\n try {\n this.renderPromise = new Promise((resolve) => (this.#resolveRenderPromise = resolve));\n this.renderer = renderer;\n await this.prepareToRenderSnapshot(renderer);\n\n const renderInterception = new Promise((resolve) => (this.#resolveInterceptionPromise = resolve));\n const options = { resume: this.#resolveInterceptionPromise, render: this.renderer.renderElement, renderMethod: this.renderer.renderMethod };\n const immediateRender = this.delegate.allowsImmediateRender(snapshot, options);\n if (!immediateRender) await renderInterception;\n\n await this.renderSnapshot(renderer);\n this.delegate.viewRenderedSnapshot(snapshot, isPreview, this.renderer.renderMethod);\n this.delegate.preloadOnLoadLinksForView(this.element);\n this.finishRenderingSnapshot(renderer);\n } finally {\n delete this.renderer;\n this.#resolveRenderPromise(undefined);\n delete this.renderPromise;\n }\n } else if (shouldInvalidate) {\n this.invalidate(renderer.reloadReason);\n }\n }\n\n invalidate(reason) {\n this.delegate.viewInvalidated(reason);\n }\n\n async prepareToRenderSnapshot(renderer) {\n this.markAsPreview(renderer.isPreview);\n await renderer.prepareToRender();\n }\n\n markAsPreview(isPreview) {\n if (isPreview) {\n this.element.setAttribute(\"data-turbo-preview\", \"\");\n } else {\n this.element.removeAttribute(\"data-turbo-preview\");\n }\n }\n\n markVisitDirection(direction) {\n this.element.setAttribute(\"data-turbo-visit-direction\", direction);\n }\n\n unmarkVisitDirection() {\n this.element.removeAttribute(\"data-turbo-visit-direction\");\n }\n\n async renderSnapshot(renderer) {\n await renderer.render();\n }\n\n finishRenderingSnapshot(renderer) {\n renderer.finishRendering();\n }\n}\n\nclass FrameView extends View {\n missing() {\n this.element.innerHTML = `Content missing`;\n }\n\n get snapshot() {\n return new Snapshot(this.element)\n }\n}\n\nclass LinkInterceptor {\n constructor(delegate, element) {\n this.delegate = delegate;\n this.element = element;\n }\n\n start() {\n this.element.addEventListener(\"click\", this.clickBubbled);\n document.addEventListener(\"turbo:click\", this.linkClicked);\n document.addEventListener(\"turbo:before-visit\", this.willVisit);\n }\n\n stop() {\n this.element.removeEventListener(\"click\", this.clickBubbled);\n document.removeEventListener(\"turbo:click\", this.linkClicked);\n document.removeEventListener(\"turbo:before-visit\", this.willVisit);\n }\n\n clickBubbled = (event) => {\n if (this.clickEventIsSignificant(event)) {\n this.clickEvent = event;\n } else {\n delete this.clickEvent;\n }\n }\n\n linkClicked = (event) => {\n if (this.clickEvent && this.clickEventIsSignificant(event)) {\n if (this.delegate.shouldInterceptLinkClick(event.target, event.detail.url, event.detail.originalEvent)) {\n this.clickEvent.preventDefault();\n event.preventDefault();\n this.delegate.linkClickIntercepted(event.target, event.detail.url, event.detail.originalEvent);\n }\n }\n delete this.clickEvent;\n }\n\n willVisit = (_event) => {\n delete this.clickEvent;\n }\n\n clickEventIsSignificant(event) {\n const target = event.composed ? event.target?.parentElement : event.target;\n const element = findLinkFromClickTarget(target) || target;\n\n return element instanceof Element && element.closest(\"turbo-frame, html\") == this.element\n }\n}\n\nclass LinkClickObserver {\n started = false\n\n constructor(delegate, eventTarget) {\n this.delegate = delegate;\n this.eventTarget = eventTarget;\n }\n\n start() {\n if (!this.started) {\n this.eventTarget.addEventListener(\"click\", this.clickCaptured, true);\n this.started = true;\n }\n }\n\n stop() {\n if (this.started) {\n this.eventTarget.removeEventListener(\"click\", this.clickCaptured, true);\n this.started = false;\n }\n }\n\n clickCaptured = () => {\n this.eventTarget.removeEventListener(\"click\", this.clickBubbled, false);\n this.eventTarget.addEventListener(\"click\", this.clickBubbled, false);\n }\n\n clickBubbled = (event) => {\n if (event instanceof MouseEvent && this.clickEventIsSignificant(event)) {\n const target = (event.composedPath && event.composedPath()[0]) || event.target;\n const link = findLinkFromClickTarget(target);\n if (link && doesNotTargetIFrame(link.target)) {\n const location = getLocationForLink(link);\n if (this.delegate.willFollowLinkToLocation(link, location, event)) {\n event.preventDefault();\n this.delegate.followedLinkToLocation(link, location);\n }\n }\n }\n }\n\n clickEventIsSignificant(event) {\n return !(\n (event.target && event.target.isContentEditable) ||\n event.defaultPrevented ||\n event.which > 1 ||\n event.altKey ||\n event.ctrlKey ||\n event.metaKey ||\n event.shiftKey\n )\n }\n}\n\nclass FormLinkClickObserver {\n constructor(delegate, element) {\n this.delegate = delegate;\n this.linkInterceptor = new LinkClickObserver(this, element);\n }\n\n start() {\n this.linkInterceptor.start();\n }\n\n stop() {\n this.linkInterceptor.stop();\n }\n\n // Link hover observer delegate\n\n canPrefetchRequestToLocation(link, location) {\n return false\n }\n\n prefetchAndCacheRequestToLocation(link, location) {\n return\n }\n\n // Link click observer delegate\n\n willFollowLinkToLocation(link, location, originalEvent) {\n return (\n this.delegate.willSubmitFormLinkToLocation(link, location, originalEvent) &&\n (link.hasAttribute(\"data-turbo-method\") || link.hasAttribute(\"data-turbo-stream\"))\n )\n }\n\n followedLinkToLocation(link, location) {\n const form = document.createElement(\"form\");\n\n const type = \"hidden\";\n for (const [name, value] of location.searchParams) {\n form.append(Object.assign(document.createElement(\"input\"), { type, name, value }));\n }\n\n const action = Object.assign(location, { search: \"\" });\n form.setAttribute(\"data-turbo\", \"true\");\n form.setAttribute(\"action\", action.href);\n form.setAttribute(\"hidden\", \"\");\n\n const method = link.getAttribute(\"data-turbo-method\");\n if (method) form.setAttribute(\"method\", method);\n\n const turboFrame = link.getAttribute(\"data-turbo-frame\");\n if (turboFrame) form.setAttribute(\"data-turbo-frame\", turboFrame);\n\n const turboAction = getVisitAction(link);\n if (turboAction) form.setAttribute(\"data-turbo-action\", turboAction);\n\n const turboConfirm = link.getAttribute(\"data-turbo-confirm\");\n if (turboConfirm) form.setAttribute(\"data-turbo-confirm\", turboConfirm);\n\n const turboStream = link.hasAttribute(\"data-turbo-stream\");\n if (turboStream) form.setAttribute(\"data-turbo-stream\", \"\");\n\n this.delegate.submittedFormLinkToLocation(link, location, form);\n\n document.body.appendChild(form);\n form.addEventListener(\"turbo:submit-end\", () => form.remove(), { once: true });\n requestAnimationFrame(() => form.requestSubmit());\n }\n}\n\nclass Bardo {\n static async preservingPermanentElements(delegate, permanentElementMap, callback) {\n const bardo = new this(delegate, permanentElementMap);\n bardo.enter();\n await callback();\n bardo.leave();\n }\n\n constructor(delegate, permanentElementMap) {\n this.delegate = delegate;\n this.permanentElementMap = permanentElementMap;\n }\n\n enter() {\n for (const id in this.permanentElementMap) {\n const [currentPermanentElement, newPermanentElement] = this.permanentElementMap[id];\n this.delegate.enteringBardo(currentPermanentElement, newPermanentElement);\n this.replaceNewPermanentElementWithPlaceholder(newPermanentElement);\n }\n }\n\n leave() {\n for (const id in this.permanentElementMap) {\n const [currentPermanentElement] = this.permanentElementMap[id];\n this.replaceCurrentPermanentElementWithClone(currentPermanentElement);\n this.replacePlaceholderWithPermanentElement(currentPermanentElement);\n this.delegate.leavingBardo(currentPermanentElement);\n }\n }\n\n replaceNewPermanentElementWithPlaceholder(permanentElement) {\n const placeholder = createPlaceholderForPermanentElement(permanentElement);\n permanentElement.replaceWith(placeholder);\n }\n\n replaceCurrentPermanentElementWithClone(permanentElement) {\n const clone = permanentElement.cloneNode(true);\n permanentElement.replaceWith(clone);\n }\n\n replacePlaceholderWithPermanentElement(permanentElement) {\n const placeholder = this.getPlaceholderById(permanentElement.id);\n placeholder?.replaceWith(permanentElement);\n }\n\n getPlaceholderById(id) {\n return this.placeholders.find((element) => element.content == id)\n }\n\n get placeholders() {\n return [...document.querySelectorAll(\"meta[name=turbo-permanent-placeholder][content]\")]\n }\n}\n\nfunction createPlaceholderForPermanentElement(permanentElement) {\n const element = document.createElement(\"meta\");\n element.setAttribute(\"name\", \"turbo-permanent-placeholder\");\n element.setAttribute(\"content\", permanentElement.id);\n return element\n}\n\nclass Renderer {\n #activeElement = null\n\n static renderElement(currentElement, newElement) {\n // Abstract method\n }\n\n constructor(currentSnapshot, newSnapshot, isPreview, willRender = true) {\n this.currentSnapshot = currentSnapshot;\n this.newSnapshot = newSnapshot;\n this.isPreview = isPreview;\n this.willRender = willRender;\n this.renderElement = this.constructor.renderElement;\n this.promise = new Promise((resolve, reject) => (this.resolvingFunctions = { resolve, reject }));\n }\n\n get shouldRender() {\n return true\n }\n\n get shouldAutofocus() {\n return true\n }\n\n get reloadReason() {\n return\n }\n\n prepareToRender() {\n return\n }\n\n render() {\n // Abstract method\n }\n\n finishRendering() {\n if (this.resolvingFunctions) {\n this.resolvingFunctions.resolve();\n delete this.resolvingFunctions;\n }\n }\n\n async preservingPermanentElements(callback) {\n await Bardo.preservingPermanentElements(this, this.permanentElementMap, callback);\n }\n\n focusFirstAutofocusableElement() {\n if (this.shouldAutofocus) {\n const element = this.connectedSnapshot.firstAutofocusableElement;\n if (element) {\n element.focus();\n }\n }\n }\n\n // Bardo delegate\n\n enteringBardo(currentPermanentElement) {\n if (this.#activeElement) return\n\n if (currentPermanentElement.contains(this.currentSnapshot.activeElement)) {\n this.#activeElement = this.currentSnapshot.activeElement;\n }\n }\n\n leavingBardo(currentPermanentElement) {\n if (currentPermanentElement.contains(this.#activeElement) && this.#activeElement instanceof HTMLElement) {\n this.#activeElement.focus();\n\n this.#activeElement = null;\n }\n }\n\n get connectedSnapshot() {\n return this.newSnapshot.isConnected ? this.newSnapshot : this.currentSnapshot\n }\n\n get currentElement() {\n return this.currentSnapshot.element\n }\n\n get newElement() {\n return this.newSnapshot.element\n }\n\n get permanentElementMap() {\n return this.currentSnapshot.getPermanentElementMapForSnapshot(this.newSnapshot)\n }\n\n get renderMethod() {\n return \"replace\"\n }\n}\n\nclass FrameRenderer extends Renderer {\n static renderElement(currentElement, newElement) {\n const destinationRange = document.createRange();\n destinationRange.selectNodeContents(currentElement);\n destinationRange.deleteContents();\n\n const frameElement = newElement;\n const sourceRange = frameElement.ownerDocument?.createRange();\n if (sourceRange) {\n sourceRange.selectNodeContents(frameElement);\n currentElement.appendChild(sourceRange.extractContents());\n }\n }\n\n constructor(delegate, currentSnapshot, newSnapshot, renderElement, isPreview, willRender = true) {\n super(currentSnapshot, newSnapshot, renderElement, isPreview, willRender);\n this.delegate = delegate;\n }\n\n get shouldRender() {\n return true\n }\n\n async render() {\n await nextRepaint();\n this.preservingPermanentElements(() => {\n this.loadFrameElement();\n });\n this.scrollFrameIntoView();\n await nextRepaint();\n this.focusFirstAutofocusableElement();\n await nextRepaint();\n this.activateScriptElements();\n }\n\n loadFrameElement() {\n this.delegate.willRenderFrame(this.currentElement, this.newElement);\n this.renderElement(this.currentElement, this.newElement);\n }\n\n scrollFrameIntoView() {\n if (this.currentElement.autoscroll || this.newElement.autoscroll) {\n const element = this.currentElement.firstElementChild;\n const block = readScrollLogicalPosition(this.currentElement.getAttribute(\"data-autoscroll-block\"), \"end\");\n const behavior = readScrollBehavior(this.currentElement.getAttribute(\"data-autoscroll-behavior\"), \"auto\");\n\n if (element) {\n element.scrollIntoView({ block, behavior });\n return true\n }\n }\n return false\n }\n\n activateScriptElements() {\n for (const inertScriptElement of this.newScriptElements) {\n const activatedScriptElement = activateScriptElement(inertScriptElement);\n inertScriptElement.replaceWith(activatedScriptElement);\n }\n }\n\n get newScriptElements() {\n return this.currentElement.querySelectorAll(\"script\")\n }\n}\n\nfunction readScrollLogicalPosition(value, defaultValue) {\n if (value == \"end\" || value == \"start\" || value == \"center\" || value == \"nearest\") {\n return value\n } else {\n return defaultValue\n }\n}\n\nfunction readScrollBehavior(value, defaultValue) {\n if (value == \"auto\" || value == \"smooth\") {\n return value\n } else {\n return defaultValue\n }\n}\n\n// base IIFE to define idiomorph\nvar Idiomorph = (function () {\n\n //=============================================================================\n // AND NOW IT BEGINS...\n //=============================================================================\n let EMPTY_SET = new Set();\n\n // default configuration values, updatable by users now\n let defaults = {\n morphStyle: \"outerHTML\",\n callbacks : {\n beforeNodeAdded: noOp,\n afterNodeAdded: noOp,\n beforeNodeMorphed: noOp,\n afterNodeMorphed: noOp,\n beforeNodeRemoved: noOp,\n afterNodeRemoved: noOp,\n beforeAttributeUpdated: noOp,\n\n },\n head: {\n style: 'merge',\n shouldPreserve: function (elt) {\n return elt.getAttribute(\"im-preserve\") === \"true\";\n },\n shouldReAppend: function (elt) {\n return elt.getAttribute(\"im-re-append\") === \"true\";\n },\n shouldRemove: noOp,\n afterHeadMorphed: noOp,\n }\n };\n\n //=============================================================================\n // Core Morphing Algorithm - morph, morphNormalizedContent, morphOldNodeTo, morphChildren\n //=============================================================================\n function morph(oldNode, newContent, config = {}) {\n\n if (oldNode instanceof Document) {\n oldNode = oldNode.documentElement;\n }\n\n if (typeof newContent === 'string') {\n newContent = parseContent(newContent);\n }\n\n let normalizedContent = normalizeContent(newContent);\n\n let ctx = createMorphContext(oldNode, normalizedContent, config);\n\n return morphNormalizedContent(oldNode, normalizedContent, ctx);\n }\n\n function morphNormalizedContent(oldNode, normalizedNewContent, ctx) {\n if (ctx.head.block) {\n let oldHead = oldNode.querySelector('head');\n let newHead = normalizedNewContent.querySelector('head');\n if (oldHead && newHead) {\n let promises = handleHeadElement(newHead, oldHead, ctx);\n // when head promises resolve, call morph again, ignoring the head tag\n Promise.all(promises).then(function () {\n morphNormalizedContent(oldNode, normalizedNewContent, Object.assign(ctx, {\n head: {\n block: false,\n ignore: true\n }\n }));\n });\n return;\n }\n }\n\n if (ctx.morphStyle === \"innerHTML\") {\n\n // innerHTML, so we are only updating the children\n morphChildren(normalizedNewContent, oldNode, ctx);\n return oldNode.children;\n\n } else if (ctx.morphStyle === \"outerHTML\" || ctx.morphStyle == null) {\n // otherwise find the best element match in the new content, morph that, and merge its siblings\n // into either side of the best match\n let bestMatch = findBestNodeMatch(normalizedNewContent, oldNode, ctx);\n\n // stash the siblings that will need to be inserted on either side of the best match\n let previousSibling = bestMatch?.previousSibling;\n let nextSibling = bestMatch?.nextSibling;\n\n // morph it\n let morphedNode = morphOldNodeTo(oldNode, bestMatch, ctx);\n\n if (bestMatch) {\n // if there was a best match, merge the siblings in too and return the\n // whole bunch\n return insertSiblings(previousSibling, morphedNode, nextSibling);\n } else {\n // otherwise nothing was added to the DOM\n return []\n }\n } else {\n throw \"Do not understand how to morph style \" + ctx.morphStyle;\n }\n }\n\n\n /**\n * @param possibleActiveElement\n * @param ctx\n * @returns {boolean}\n */\n function ignoreValueOfActiveElement(possibleActiveElement, ctx) {\n return ctx.ignoreActiveValue && possibleActiveElement === document.activeElement && possibleActiveElement !== document.body;\n }\n\n /**\n * @param oldNode root node to merge content into\n * @param newContent new content to merge\n * @param ctx the merge context\n * @returns {Element} the element that ended up in the DOM\n */\n function morphOldNodeTo(oldNode, newContent, ctx) {\n if (ctx.ignoreActive && oldNode === document.activeElement) ; else if (newContent == null) {\n if (ctx.callbacks.beforeNodeRemoved(oldNode) === false) return oldNode;\n\n oldNode.remove();\n ctx.callbacks.afterNodeRemoved(oldNode);\n return null;\n } else if (!isSoftMatch(oldNode, newContent)) {\n if (ctx.callbacks.beforeNodeRemoved(oldNode) === false) return oldNode;\n if (ctx.callbacks.beforeNodeAdded(newContent) === false) return oldNode;\n\n oldNode.parentElement.replaceChild(newContent, oldNode);\n ctx.callbacks.afterNodeAdded(newContent);\n ctx.callbacks.afterNodeRemoved(oldNode);\n return newContent;\n } else {\n if (ctx.callbacks.beforeNodeMorphed(oldNode, newContent) === false) return oldNode;\n\n if (oldNode instanceof HTMLHeadElement && ctx.head.ignore) ; else if (oldNode instanceof HTMLHeadElement && ctx.head.style !== \"morph\") {\n handleHeadElement(newContent, oldNode, ctx);\n } else {\n syncNodeFrom(newContent, oldNode, ctx);\n if (!ignoreValueOfActiveElement(oldNode, ctx)) {\n morphChildren(newContent, oldNode, ctx);\n }\n }\n ctx.callbacks.afterNodeMorphed(oldNode, newContent);\n return oldNode;\n }\n }\n\n /**\n * This is the core algorithm for matching up children. The idea is to use id sets to try to match up\n * nodes as faithfully as possible. We greedily match, which allows us to keep the algorithm fast, but\n * by using id sets, we are able to better match up with content deeper in the DOM.\n *\n * Basic algorithm is, for each node in the new content:\n *\n * - if we have reached the end of the old parent, append the new content\n * - if the new content has an id set match with the current insertion point, morph\n * - search for an id set match\n * - if id set match found, morph\n * - otherwise search for a \"soft\" match\n * - if a soft match is found, morph\n * - otherwise, prepend the new node before the current insertion point\n *\n * The two search algorithms terminate if competing node matches appear to outweigh what can be achieved\n * with the current node. See findIdSetMatch() and findSoftMatch() for details.\n *\n * @param {Element} newParent the parent element of the new content\n * @param {Element } oldParent the old content that we are merging the new content into\n * @param ctx the merge context\n */\n function morphChildren(newParent, oldParent, ctx) {\n\n let nextNewChild = newParent.firstChild;\n let insertionPoint = oldParent.firstChild;\n let newChild;\n\n // run through all the new content\n while (nextNewChild) {\n\n newChild = nextNewChild;\n nextNewChild = newChild.nextSibling;\n\n // if we are at the end of the exiting parent's children, just append\n if (insertionPoint == null) {\n if (ctx.callbacks.beforeNodeAdded(newChild) === false) return;\n\n oldParent.appendChild(newChild);\n ctx.callbacks.afterNodeAdded(newChild);\n removeIdsFromConsideration(ctx, newChild);\n continue;\n }\n\n // if the current node has an id set match then morph\n if (isIdSetMatch(newChild, insertionPoint, ctx)) {\n morphOldNodeTo(insertionPoint, newChild, ctx);\n insertionPoint = insertionPoint.nextSibling;\n removeIdsFromConsideration(ctx, newChild);\n continue;\n }\n\n // otherwise search forward in the existing old children for an id set match\n let idSetMatch = findIdSetMatch(newParent, oldParent, newChild, insertionPoint, ctx);\n\n // if we found a potential match, remove the nodes until that point and morph\n if (idSetMatch) {\n insertionPoint = removeNodesBetween(insertionPoint, idSetMatch, ctx);\n morphOldNodeTo(idSetMatch, newChild, ctx);\n removeIdsFromConsideration(ctx, newChild);\n continue;\n }\n\n // no id set match found, so scan forward for a soft match for the current node\n let softMatch = findSoftMatch(newParent, oldParent, newChild, insertionPoint, ctx);\n\n // if we found a soft match for the current node, morph\n if (softMatch) {\n insertionPoint = removeNodesBetween(insertionPoint, softMatch, ctx);\n morphOldNodeTo(softMatch, newChild, ctx);\n removeIdsFromConsideration(ctx, newChild);\n continue;\n }\n\n // abandon all hope of morphing, just insert the new child before the insertion point\n // and move on\n if (ctx.callbacks.beforeNodeAdded(newChild) === false) return;\n\n oldParent.insertBefore(newChild, insertionPoint);\n ctx.callbacks.afterNodeAdded(newChild);\n removeIdsFromConsideration(ctx, newChild);\n }\n\n // remove any remaining old nodes that didn't match up with new content\n while (insertionPoint !== null) {\n\n let tempNode = insertionPoint;\n insertionPoint = insertionPoint.nextSibling;\n removeNode(tempNode, ctx);\n }\n }\n\n //=============================================================================\n // Attribute Syncing Code\n //=============================================================================\n\n /**\n * @param attr {String} the attribute to be mutated\n * @param to {Element} the element that is going to be updated\n * @param updateType {(\"update\"|\"remove\")}\n * @param ctx the merge context\n * @returns {boolean} true if the attribute should be ignored, false otherwise\n */\n function ignoreAttribute(attr, to, updateType, ctx) {\n if(attr === 'value' && ctx.ignoreActiveValue && to === document.activeElement){\n return true;\n }\n return ctx.callbacks.beforeAttributeUpdated(attr, to, updateType) === false;\n }\n\n /**\n * syncs a given node with another node, copying over all attributes and\n * inner element state from the 'from' node to the 'to' node\n *\n * @param {Element} from the element to copy attributes & state from\n * @param {Element} to the element to copy attributes & state to\n * @param ctx the merge context\n */\n function syncNodeFrom(from, to, ctx) {\n let type = from.nodeType;\n\n // if is an element type, sync the attributes from the\n // new node into the new node\n if (type === 1 /* element type */) {\n const fromAttributes = from.attributes;\n const toAttributes = to.attributes;\n for (const fromAttribute of fromAttributes) {\n if (ignoreAttribute(fromAttribute.name, to, 'update', ctx)) {\n continue;\n }\n if (to.getAttribute(fromAttribute.name) !== fromAttribute.value) {\n to.setAttribute(fromAttribute.name, fromAttribute.value);\n }\n }\n // iterate backwards to avoid skipping over items when a delete occurs\n for (let i = toAttributes.length - 1; 0 <= i; i--) {\n const toAttribute = toAttributes[i];\n if (ignoreAttribute(toAttribute.name, to, 'remove', ctx)) {\n continue;\n }\n if (!from.hasAttribute(toAttribute.name)) {\n to.removeAttribute(toAttribute.name);\n }\n }\n }\n\n // sync text nodes\n if (type === 8 /* comment */ || type === 3 /* text */) {\n if (to.nodeValue !== from.nodeValue) {\n to.nodeValue = from.nodeValue;\n }\n }\n\n if (!ignoreValueOfActiveElement(to, ctx)) {\n // sync input values\n syncInputValue(from, to, ctx);\n }\n }\n\n /**\n * @param from {Element} element to sync the value from\n * @param to {Element} element to sync the value to\n * @param attributeName {String} the attribute name\n * @param ctx the merge context\n */\n function syncBooleanAttribute(from, to, attributeName, ctx) {\n if (from[attributeName] !== to[attributeName]) {\n let ignoreUpdate = ignoreAttribute(attributeName, to, 'update', ctx);\n if (!ignoreUpdate) {\n to[attributeName] = from[attributeName];\n }\n if (from[attributeName]) {\n if (!ignoreUpdate) {\n to.setAttribute(attributeName, from[attributeName]);\n }\n } else {\n if (!ignoreAttribute(attributeName, to, 'remove', ctx)) {\n to.removeAttribute(attributeName);\n }\n }\n }\n }\n\n /**\n * NB: many bothans died to bring us information:\n *\n * https://github.com/patrick-steele-idem/morphdom/blob/master/src/specialElHandlers.js\n * https://github.com/choojs/nanomorph/blob/master/lib/morph.jsL113\n *\n * @param from {Element} the element to sync the input value from\n * @param to {Element} the element to sync the input value to\n * @param ctx the merge context\n */\n function syncInputValue(from, to, ctx) {\n if (from instanceof HTMLInputElement &&\n to instanceof HTMLInputElement &&\n from.type !== 'file') {\n\n let fromValue = from.value;\n let toValue = to.value;\n\n // sync boolean attributes\n syncBooleanAttribute(from, to, 'checked', ctx);\n syncBooleanAttribute(from, to, 'disabled', ctx);\n\n if (!from.hasAttribute('value')) {\n if (!ignoreAttribute('value', to, 'remove', ctx)) {\n to.value = '';\n to.removeAttribute('value');\n }\n } else if (fromValue !== toValue) {\n if (!ignoreAttribute('value', to, 'update', ctx)) {\n to.setAttribute('value', fromValue);\n to.value = fromValue;\n }\n }\n } else if (from instanceof HTMLOptionElement) {\n syncBooleanAttribute(from, to, 'selected', ctx);\n } else if (from instanceof HTMLTextAreaElement && to instanceof HTMLTextAreaElement) {\n let fromValue = from.value;\n let toValue = to.value;\n if (ignoreAttribute('value', to, 'update', ctx)) {\n return;\n }\n if (fromValue !== toValue) {\n to.value = fromValue;\n }\n if (to.firstChild && to.firstChild.nodeValue !== fromValue) {\n to.firstChild.nodeValue = fromValue;\n }\n }\n }\n\n //=============================================================================\n // the HEAD tag can be handled specially, either w/ a 'merge' or 'append' style\n //=============================================================================\n function handleHeadElement(newHeadTag, currentHead, ctx) {\n\n let added = [];\n let removed = [];\n let preserved = [];\n let nodesToAppend = [];\n\n let headMergeStyle = ctx.head.style;\n\n // put all new head elements into a Map, by their outerHTML\n let srcToNewHeadNodes = new Map();\n for (const newHeadChild of newHeadTag.children) {\n srcToNewHeadNodes.set(newHeadChild.outerHTML, newHeadChild);\n }\n\n // for each elt in the current head\n for (const currentHeadElt of currentHead.children) {\n\n // If the current head element is in the map\n let inNewContent = srcToNewHeadNodes.has(currentHeadElt.outerHTML);\n let isReAppended = ctx.head.shouldReAppend(currentHeadElt);\n let isPreserved = ctx.head.shouldPreserve(currentHeadElt);\n if (inNewContent || isPreserved) {\n if (isReAppended) {\n // remove the current version and let the new version replace it and re-execute\n removed.push(currentHeadElt);\n } else {\n // this element already exists and should not be re-appended, so remove it from\n // the new content map, preserving it in the DOM\n srcToNewHeadNodes.delete(currentHeadElt.outerHTML);\n preserved.push(currentHeadElt);\n }\n } else {\n if (headMergeStyle === \"append\") {\n // we are appending and this existing element is not new content\n // so if and only if it is marked for re-append do we do anything\n if (isReAppended) {\n removed.push(currentHeadElt);\n nodesToAppend.push(currentHeadElt);\n }\n } else {\n // if this is a merge, we remove this content since it is not in the new head\n if (ctx.head.shouldRemove(currentHeadElt) !== false) {\n removed.push(currentHeadElt);\n }\n }\n }\n }\n\n // Push the remaining new head elements in the Map into the\n // nodes to append to the head tag\n nodesToAppend.push(...srcToNewHeadNodes.values());\n\n let promises = [];\n for (const newNode of nodesToAppend) {\n let newElt = document.createRange().createContextualFragment(newNode.outerHTML).firstChild;\n if (ctx.callbacks.beforeNodeAdded(newElt) !== false) {\n if (newElt.href || newElt.src) {\n let resolve = null;\n let promise = new Promise(function (_resolve) {\n resolve = _resolve;\n });\n newElt.addEventListener('load', function () {\n resolve();\n });\n promises.push(promise);\n }\n currentHead.appendChild(newElt);\n ctx.callbacks.afterNodeAdded(newElt);\n added.push(newElt);\n }\n }\n\n // remove all removed elements, after we have appended the new elements to avoid\n // additional network requests for things like style sheets\n for (const removedElement of removed) {\n if (ctx.callbacks.beforeNodeRemoved(removedElement) !== false) {\n currentHead.removeChild(removedElement);\n ctx.callbacks.afterNodeRemoved(removedElement);\n }\n }\n\n ctx.head.afterHeadMorphed(currentHead, {added: added, kept: preserved, removed: removed});\n return promises;\n }\n\n function noOp() {\n }\n\n /*\n Deep merges the config object and the Idiomoroph.defaults object to\n produce a final configuration object\n */\n function mergeDefaults(config) {\n let finalConfig = {};\n // copy top level stuff into final config\n Object.assign(finalConfig, defaults);\n Object.assign(finalConfig, config);\n\n // copy callbacks into final config (do this to deep merge the callbacks)\n finalConfig.callbacks = {};\n Object.assign(finalConfig.callbacks, defaults.callbacks);\n Object.assign(finalConfig.callbacks, config.callbacks);\n\n // copy head config into final config (do this to deep merge the head)\n finalConfig.head = {};\n Object.assign(finalConfig.head, defaults.head);\n Object.assign(finalConfig.head, config.head);\n return finalConfig;\n }\n\n function createMorphContext(oldNode, newContent, config) {\n config = mergeDefaults(config);\n return {\n target: oldNode,\n newContent: newContent,\n config: config,\n morphStyle: config.morphStyle,\n ignoreActive: config.ignoreActive,\n ignoreActiveValue: config.ignoreActiveValue,\n idMap: createIdMap(oldNode, newContent),\n deadIds: new Set(),\n callbacks: config.callbacks,\n head: config.head\n }\n }\n\n function isIdSetMatch(node1, node2, ctx) {\n if (node1 == null || node2 == null) {\n return false;\n }\n if (node1.nodeType === node2.nodeType && node1.tagName === node2.tagName) {\n if (node1.id !== \"\" && node1.id === node2.id) {\n return true;\n } else {\n return getIdIntersectionCount(ctx, node1, node2) > 0;\n }\n }\n return false;\n }\n\n function isSoftMatch(node1, node2) {\n if (node1 == null || node2 == null) {\n return false;\n }\n return node1.nodeType === node2.nodeType && node1.tagName === node2.tagName\n }\n\n function removeNodesBetween(startInclusive, endExclusive, ctx) {\n while (startInclusive !== endExclusive) {\n let tempNode = startInclusive;\n startInclusive = startInclusive.nextSibling;\n removeNode(tempNode, ctx);\n }\n removeIdsFromConsideration(ctx, endExclusive);\n return endExclusive.nextSibling;\n }\n\n //=============================================================================\n // Scans forward from the insertionPoint in the old parent looking for a potential id match\n // for the newChild. We stop if we find a potential id match for the new child OR\n // if the number of potential id matches we are discarding is greater than the\n // potential id matches for the new child\n //=============================================================================\n function findIdSetMatch(newContent, oldParent, newChild, insertionPoint, ctx) {\n\n // max id matches we are willing to discard in our search\n let newChildPotentialIdCount = getIdIntersectionCount(ctx, newChild, oldParent);\n\n let potentialMatch = null;\n\n // only search forward if there is a possibility of an id match\n if (newChildPotentialIdCount > 0) {\n let potentialMatch = insertionPoint;\n // if there is a possibility of an id match, scan forward\n // keep track of the potential id match count we are discarding (the\n // newChildPotentialIdCount must be greater than this to make it likely\n // worth it)\n let otherMatchCount = 0;\n while (potentialMatch != null) {\n\n // If we have an id match, return the current potential match\n if (isIdSetMatch(newChild, potentialMatch, ctx)) {\n return potentialMatch;\n }\n\n // computer the other potential matches of this new content\n otherMatchCount += getIdIntersectionCount(ctx, potentialMatch, newContent);\n if (otherMatchCount > newChildPotentialIdCount) {\n // if we have more potential id matches in _other_ content, we\n // do not have a good candidate for an id match, so return null\n return null;\n }\n\n // advanced to the next old content child\n potentialMatch = potentialMatch.nextSibling;\n }\n }\n return potentialMatch;\n }\n\n //=============================================================================\n // Scans forward from the insertionPoint in the old parent looking for a potential soft match\n // for the newChild. We stop if we find a potential soft match for the new child OR\n // if we find a potential id match in the old parents children OR if we find two\n // potential soft matches for the next two pieces of new content\n //=============================================================================\n function findSoftMatch(newContent, oldParent, newChild, insertionPoint, ctx) {\n\n let potentialSoftMatch = insertionPoint;\n let nextSibling = newChild.nextSibling;\n let siblingSoftMatchCount = 0;\n\n while (potentialSoftMatch != null) {\n\n if (getIdIntersectionCount(ctx, potentialSoftMatch, newContent) > 0) {\n // the current potential soft match has a potential id set match with the remaining new\n // content so bail out of looking\n return null;\n }\n\n // if we have a soft match with the current node, return it\n if (isSoftMatch(newChild, potentialSoftMatch)) {\n return potentialSoftMatch;\n }\n\n if (isSoftMatch(nextSibling, potentialSoftMatch)) {\n // the next new node has a soft match with this node, so\n // increment the count of future soft matches\n siblingSoftMatchCount++;\n nextSibling = nextSibling.nextSibling;\n\n // If there are two future soft matches, bail to allow the siblings to soft match\n // so that we don't consume future soft matches for the sake of the current node\n if (siblingSoftMatchCount >= 2) {\n return null;\n }\n }\n\n // advanced to the next old content child\n potentialSoftMatch = potentialSoftMatch.nextSibling;\n }\n\n return potentialSoftMatch;\n }\n\n function parseContent(newContent) {\n let parser = new DOMParser();\n\n // remove svgs to avoid false-positive matches on head, etc.\n let contentWithSvgsRemoved = newContent.replace(/]*>|>)([\\s\\S]*?)<\\/svg>/gim, '');\n\n // if the newContent contains a html, head or body tag, we can simply parse it w/o wrapping\n if (contentWithSvgsRemoved.match(/<\\/html>/) || contentWithSvgsRemoved.match(/<\\/head>/) || contentWithSvgsRemoved.match(/<\\/body>/)) {\n let content = parser.parseFromString(newContent, \"text/html\");\n // if it is a full HTML document, return the document itself as the parent container\n if (contentWithSvgsRemoved.match(/<\\/html>/)) {\n content.generatedByIdiomorph = true;\n return content;\n } else {\n // otherwise return the html element as the parent container\n let htmlElement = content.firstChild;\n if (htmlElement) {\n htmlElement.generatedByIdiomorph = true;\n return htmlElement;\n } else {\n return null;\n }\n }\n } else {\n // if it is partial HTML, wrap it in a template tag to provide a parent element and also to help\n // deal with touchy tags like tr, tbody, etc.\n let responseDoc = parser.parseFromString(\"\", \"text/html\");\n let content = responseDoc.body.querySelector('template').content;\n content.generatedByIdiomorph = true;\n return content\n }\n }\n\n function normalizeContent(newContent) {\n if (newContent == null) {\n // noinspection UnnecessaryLocalVariableJS\n const dummyParent = document.createElement('div');\n return dummyParent;\n } else if (newContent.generatedByIdiomorph) {\n // the template tag created by idiomorph parsing can serve as a dummy parent\n return newContent;\n } else if (newContent instanceof Node) {\n // a single node is added as a child to a dummy parent\n const dummyParent = document.createElement('div');\n dummyParent.append(newContent);\n return dummyParent;\n } else {\n // all nodes in the array or HTMLElement collection are consolidated under\n // a single dummy parent element\n const dummyParent = document.createElement('div');\n for (const elt of [...newContent]) {\n dummyParent.append(elt);\n }\n return dummyParent;\n }\n }\n\n function insertSiblings(previousSibling, morphedNode, nextSibling) {\n let stack = [];\n let added = [];\n while (previousSibling != null) {\n stack.push(previousSibling);\n previousSibling = previousSibling.previousSibling;\n }\n while (stack.length > 0) {\n let node = stack.pop();\n added.push(node); // push added preceding siblings on in order and insert\n morphedNode.parentElement.insertBefore(node, morphedNode);\n }\n added.push(morphedNode);\n while (nextSibling != null) {\n stack.push(nextSibling);\n added.push(nextSibling); // here we are going in order, so push on as we scan, rather than add\n nextSibling = nextSibling.nextSibling;\n }\n while (stack.length > 0) {\n morphedNode.parentElement.insertBefore(stack.pop(), morphedNode.nextSibling);\n }\n return added;\n }\n\n function findBestNodeMatch(newContent, oldNode, ctx) {\n let currentElement;\n currentElement = newContent.firstChild;\n let bestElement = currentElement;\n let score = 0;\n while (currentElement) {\n let newScore = scoreElement(currentElement, oldNode, ctx);\n if (newScore > score) {\n bestElement = currentElement;\n score = newScore;\n }\n currentElement = currentElement.nextSibling;\n }\n return bestElement;\n }\n\n function scoreElement(node1, node2, ctx) {\n if (isSoftMatch(node1, node2)) {\n return .5 + getIdIntersectionCount(ctx, node1, node2);\n }\n return 0;\n }\n\n function removeNode(tempNode, ctx) {\n removeIdsFromConsideration(ctx, tempNode);\n if (ctx.callbacks.beforeNodeRemoved(tempNode) === false) return;\n\n tempNode.remove();\n ctx.callbacks.afterNodeRemoved(tempNode);\n }\n\n //=============================================================================\n // ID Set Functions\n //=============================================================================\n\n function isIdInConsideration(ctx, id) {\n return !ctx.deadIds.has(id);\n }\n\n function idIsWithinNode(ctx, id, targetNode) {\n let idSet = ctx.idMap.get(targetNode) || EMPTY_SET;\n return idSet.has(id);\n }\n\n function removeIdsFromConsideration(ctx, node) {\n let idSet = ctx.idMap.get(node) || EMPTY_SET;\n for (const id of idSet) {\n ctx.deadIds.add(id);\n }\n }\n\n function getIdIntersectionCount(ctx, node1, node2) {\n let sourceSet = ctx.idMap.get(node1) || EMPTY_SET;\n let matchCount = 0;\n for (const id of sourceSet) {\n // a potential match is an id in the source and potentialIdsSet, but\n // that has not already been merged into the DOM\n if (isIdInConsideration(ctx, id) && idIsWithinNode(ctx, id, node2)) {\n ++matchCount;\n }\n }\n return matchCount;\n }\n\n /**\n * A bottom up algorithm that finds all elements with ids inside of the node\n * argument and populates id sets for those nodes and all their parents, generating\n * a set of ids contained within all nodes for the entire hierarchy in the DOM\n *\n * @param node {Element}\n * @param {Map>} idMap\n */\n function populateIdMapForNode(node, idMap) {\n let nodeParent = node.parentElement;\n // find all elements with an id property\n let idElements = node.querySelectorAll('[id]');\n for (const elt of idElements) {\n let current = elt;\n // walk up the parent hierarchy of that element, adding the id\n // of element to the parent's id set\n while (current !== nodeParent && current != null) {\n let idSet = idMap.get(current);\n // if the id set doesn't exist, create it and insert it in the map\n if (idSet == null) {\n idSet = new Set();\n idMap.set(current, idSet);\n }\n idSet.add(elt.id);\n current = current.parentElement;\n }\n }\n }\n\n /**\n * This function computes a map of nodes to all ids contained within that node (inclusive of the\n * node). This map can be used to ask if two nodes have intersecting sets of ids, which allows\n * for a looser definition of \"matching\" than tradition id matching, and allows child nodes\n * to contribute to a parent nodes matching.\n *\n * @param {Element} oldContent the old content that will be morphed\n * @param {Element} newContent the new content to morph to\n * @returns {Map>} a map of nodes to id sets for the\n */\n function createIdMap(oldContent, newContent) {\n let idMap = new Map();\n populateIdMapForNode(oldContent, idMap);\n populateIdMapForNode(newContent, idMap);\n return idMap;\n }\n\n //=============================================================================\n // This is what ends up becoming the Idiomorph global object\n //=============================================================================\n return {\n morph,\n defaults\n }\n })();\n\nfunction morphElements(currentElement, newElement, { callbacks, ...options } = {}) {\n Idiomorph.morph(currentElement, newElement, {\n ...options,\n callbacks: new DefaultIdiomorphCallbacks(callbacks)\n });\n}\n\nfunction morphChildren(currentElement, newElement) {\n morphElements(currentElement, newElement.children, {\n morphStyle: \"innerHTML\"\n });\n}\n\nclass DefaultIdiomorphCallbacks {\n #beforeNodeMorphed\n\n constructor({ beforeNodeMorphed } = {}) {\n this.#beforeNodeMorphed = beforeNodeMorphed || (() => true);\n }\n\n beforeNodeAdded = (node) => {\n return !(node.id && node.hasAttribute(\"data-turbo-permanent\") && document.getElementById(node.id))\n }\n\n beforeNodeMorphed = (currentElement, newElement) => {\n if (currentElement instanceof Element) {\n if (!currentElement.hasAttribute(\"data-turbo-permanent\") && this.#beforeNodeMorphed(currentElement, newElement)) {\n const event = dispatch(\"turbo:before-morph-element\", {\n cancelable: true,\n target: currentElement,\n detail: { currentElement, newElement }\n });\n\n return !event.defaultPrevented\n } else {\n return false\n }\n }\n }\n\n beforeAttributeUpdated = (attributeName, target, mutationType) => {\n const event = dispatch(\"turbo:before-morph-attribute\", {\n cancelable: true,\n target,\n detail: { attributeName, mutationType }\n });\n\n return !event.defaultPrevented\n }\n\n beforeNodeRemoved = (node) => {\n return this.beforeNodeMorphed(node)\n }\n\n afterNodeMorphed = (currentElement, newElement) => {\n if (currentElement instanceof Element) {\n dispatch(\"turbo:morph-element\", {\n target: currentElement,\n detail: { currentElement, newElement }\n });\n }\n }\n}\n\nclass MorphingFrameRenderer extends FrameRenderer {\n static renderElement(currentElement, newElement) {\n dispatch(\"turbo:before-frame-morph\", {\n target: currentElement,\n detail: { currentElement, newElement }\n });\n\n morphChildren(currentElement, newElement);\n }\n\n async preservingPermanentElements(callback) {\n return await callback()\n }\n}\n\nclass ProgressBar {\n static animationDuration = 300 /*ms*/\n\n static get defaultCSS() {\n return unindent`\n .turbo-progress-bar {\n position: fixed;\n display: block;\n top: 0;\n left: 0;\n height: 3px;\n background: #0076ff;\n z-index: 2147483647;\n transition:\n width ${ProgressBar.animationDuration}ms ease-out,\n opacity ${ProgressBar.animationDuration / 2}ms ${ProgressBar.animationDuration / 2}ms ease-in;\n transform: translate3d(0, 0, 0);\n }\n `\n }\n\n hiding = false\n value = 0\n visible = false\n\n constructor() {\n this.stylesheetElement = this.createStylesheetElement();\n this.progressElement = this.createProgressElement();\n this.installStylesheetElement();\n this.setValue(0);\n }\n\n show() {\n if (!this.visible) {\n this.visible = true;\n this.installProgressElement();\n this.startTrickling();\n }\n }\n\n hide() {\n if (this.visible && !this.hiding) {\n this.hiding = true;\n this.fadeProgressElement(() => {\n this.uninstallProgressElement();\n this.stopTrickling();\n this.visible = false;\n this.hiding = false;\n });\n }\n }\n\n setValue(value) {\n this.value = value;\n this.refresh();\n }\n\n // Private\n\n installStylesheetElement() {\n document.head.insertBefore(this.stylesheetElement, document.head.firstChild);\n }\n\n installProgressElement() {\n this.progressElement.style.width = \"0\";\n this.progressElement.style.opacity = \"1\";\n document.documentElement.insertBefore(this.progressElement, document.body);\n this.refresh();\n }\n\n fadeProgressElement(callback) {\n this.progressElement.style.opacity = \"0\";\n setTimeout(callback, ProgressBar.animationDuration * 1.5);\n }\n\n uninstallProgressElement() {\n if (this.progressElement.parentNode) {\n document.documentElement.removeChild(this.progressElement);\n }\n }\n\n startTrickling() {\n if (!this.trickleInterval) {\n this.trickleInterval = window.setInterval(this.trickle, ProgressBar.animationDuration);\n }\n }\n\n stopTrickling() {\n window.clearInterval(this.trickleInterval);\n delete this.trickleInterval;\n }\n\n trickle = () => {\n this.setValue(this.value + Math.random() / 100);\n }\n\n refresh() {\n requestAnimationFrame(() => {\n this.progressElement.style.width = `${10 + this.value * 90}%`;\n });\n }\n\n createStylesheetElement() {\n const element = document.createElement(\"style\");\n element.type = \"text/css\";\n element.textContent = ProgressBar.defaultCSS;\n if (this.cspNonce) {\n element.nonce = this.cspNonce;\n }\n return element\n }\n\n createProgressElement() {\n const element = document.createElement(\"div\");\n element.className = \"turbo-progress-bar\";\n return element\n }\n\n get cspNonce() {\n return getMetaContent(\"csp-nonce\")\n }\n}\n\nclass HeadSnapshot extends Snapshot {\n detailsByOuterHTML = this.children\n .filter((element) => !elementIsNoscript(element))\n .map((element) => elementWithoutNonce(element))\n .reduce((result, element) => {\n const { outerHTML } = element;\n const details =\n outerHTML in result\n ? result[outerHTML]\n : {\n type: elementType(element),\n tracked: elementIsTracked(element),\n elements: []\n };\n return {\n ...result,\n [outerHTML]: {\n ...details,\n elements: [...details.elements, element]\n }\n }\n }, {})\n\n get trackedElementSignature() {\n return Object.keys(this.detailsByOuterHTML)\n .filter((outerHTML) => this.detailsByOuterHTML[outerHTML].tracked)\n .join(\"\")\n }\n\n getScriptElementsNotInSnapshot(snapshot) {\n return this.getElementsMatchingTypeNotInSnapshot(\"script\", snapshot)\n }\n\n getStylesheetElementsNotInSnapshot(snapshot) {\n return this.getElementsMatchingTypeNotInSnapshot(\"stylesheet\", snapshot)\n }\n\n getElementsMatchingTypeNotInSnapshot(matchedType, snapshot) {\n return Object.keys(this.detailsByOuterHTML)\n .filter((outerHTML) => !(outerHTML in snapshot.detailsByOuterHTML))\n .map((outerHTML) => this.detailsByOuterHTML[outerHTML])\n .filter(({ type }) => type == matchedType)\n .map(({ elements: [element] }) => element)\n }\n\n get provisionalElements() {\n return Object.keys(this.detailsByOuterHTML).reduce((result, outerHTML) => {\n const { type, tracked, elements } = this.detailsByOuterHTML[outerHTML];\n if (type == null && !tracked) {\n return [...result, ...elements]\n } else if (elements.length > 1) {\n return [...result, ...elements.slice(1)]\n } else {\n return result\n }\n }, [])\n }\n\n getMetaValue(name) {\n const element = this.findMetaElementByName(name);\n return element ? element.getAttribute(\"content\") : null\n }\n\n findMetaElementByName(name) {\n return Object.keys(this.detailsByOuterHTML).reduce((result, outerHTML) => {\n const {\n elements: [element]\n } = this.detailsByOuterHTML[outerHTML];\n return elementIsMetaElementWithName(element, name) ? element : result\n }, undefined | undefined)\n }\n}\n\nfunction elementType(element) {\n if (elementIsScript(element)) {\n return \"script\"\n } else if (elementIsStylesheet(element)) {\n return \"stylesheet\"\n }\n}\n\nfunction elementIsTracked(element) {\n return element.getAttribute(\"data-turbo-track\") == \"reload\"\n}\n\nfunction elementIsScript(element) {\n const tagName = element.localName;\n return tagName == \"script\"\n}\n\nfunction elementIsNoscript(element) {\n const tagName = element.localName;\n return tagName == \"noscript\"\n}\n\nfunction elementIsStylesheet(element) {\n const tagName = element.localName;\n return tagName == \"style\" || (tagName == \"link\" && element.getAttribute(\"rel\") == \"stylesheet\")\n}\n\nfunction elementIsMetaElementWithName(element, name) {\n const tagName = element.localName;\n return tagName == \"meta\" && element.getAttribute(\"name\") == name\n}\n\nfunction elementWithoutNonce(element) {\n if (element.hasAttribute(\"nonce\")) {\n element.setAttribute(\"nonce\", \"\");\n }\n\n return element\n}\n\nclass PageSnapshot extends Snapshot {\n static fromHTMLString(html = \"\") {\n return this.fromDocument(parseHTMLDocument(html))\n }\n\n static fromElement(element) {\n return this.fromDocument(element.ownerDocument)\n }\n\n static fromDocument({ documentElement, body, head }) {\n return new this(documentElement, body, new HeadSnapshot(head))\n }\n\n constructor(documentElement, body, headSnapshot) {\n super(body);\n this.documentElement = documentElement;\n this.headSnapshot = headSnapshot;\n }\n\n clone() {\n const clonedElement = this.element.cloneNode(true);\n\n const selectElements = this.element.querySelectorAll(\"select\");\n const clonedSelectElements = clonedElement.querySelectorAll(\"select\");\n\n for (const [index, source] of selectElements.entries()) {\n const clone = clonedSelectElements[index];\n for (const option of clone.selectedOptions) option.selected = false;\n for (const option of source.selectedOptions) clone.options[option.index].selected = true;\n }\n\n for (const clonedPasswordInput of clonedElement.querySelectorAll('input[type=\"password\"]')) {\n clonedPasswordInput.value = \"\";\n }\n\n return new PageSnapshot(this.documentElement, clonedElement, this.headSnapshot)\n }\n\n get lang() {\n return this.documentElement.getAttribute(\"lang\")\n }\n\n get headElement() {\n return this.headSnapshot.element\n }\n\n get rootLocation() {\n const root = this.getSetting(\"root\") ?? \"/\";\n return expandURL(root)\n }\n\n get cacheControlValue() {\n return this.getSetting(\"cache-control\")\n }\n\n get isPreviewable() {\n return this.cacheControlValue != \"no-preview\"\n }\n\n get isCacheable() {\n return this.cacheControlValue != \"no-cache\"\n }\n\n get isVisitable() {\n return this.getSetting(\"visit-control\") != \"reload\"\n }\n\n get prefersViewTransitions() {\n return this.headSnapshot.getMetaValue(\"view-transition\") === \"same-origin\"\n }\n\n get shouldMorphPage() {\n return this.getSetting(\"refresh-method\") === \"morph\"\n }\n\n get shouldPreserveScrollPosition() {\n return this.getSetting(\"refresh-scroll\") === \"preserve\"\n }\n\n // Private\n\n getSetting(name) {\n return this.headSnapshot.getMetaValue(`turbo-${name}`)\n }\n}\n\nclass ViewTransitioner {\n #viewTransitionStarted = false\n #lastOperation = Promise.resolve()\n\n renderChange(useViewTransition, render) {\n if (useViewTransition && this.viewTransitionsAvailable && !this.#viewTransitionStarted) {\n this.#viewTransitionStarted = true;\n this.#lastOperation = this.#lastOperation.then(async () => {\n await document.startViewTransition(render).finished;\n });\n } else {\n this.#lastOperation = this.#lastOperation.then(render);\n }\n\n return this.#lastOperation\n }\n\n get viewTransitionsAvailable() {\n return document.startViewTransition\n }\n}\n\nconst defaultOptions = {\n action: \"advance\",\n historyChanged: false,\n visitCachedSnapshot: () => {},\n willRender: true,\n updateHistory: true,\n shouldCacheSnapshot: true,\n acceptsStreamResponse: false\n};\n\nconst TimingMetric = {\n visitStart: \"visitStart\",\n requestStart: \"requestStart\",\n requestEnd: \"requestEnd\",\n visitEnd: \"visitEnd\"\n};\n\nconst VisitState = {\n initialized: \"initialized\",\n started: \"started\",\n canceled: \"canceled\",\n failed: \"failed\",\n completed: \"completed\"\n};\n\nconst SystemStatusCode = {\n networkFailure: 0,\n timeoutFailure: -1,\n contentTypeMismatch: -2\n};\n\nconst Direction = {\n advance: \"forward\",\n restore: \"back\",\n replace: \"none\"\n};\n\nclass Visit {\n identifier = uuid() // Required by turbo-ios\n timingMetrics = {}\n\n followedRedirect = false\n historyChanged = false\n scrolled = false\n shouldCacheSnapshot = true\n acceptsStreamResponse = false\n snapshotCached = false\n state = VisitState.initialized\n viewTransitioner = new ViewTransitioner()\n\n constructor(delegate, location, restorationIdentifier, options = {}) {\n this.delegate = delegate;\n this.location = location;\n this.restorationIdentifier = restorationIdentifier || uuid();\n\n const {\n action,\n historyChanged,\n referrer,\n snapshot,\n snapshotHTML,\n response,\n visitCachedSnapshot,\n willRender,\n updateHistory,\n shouldCacheSnapshot,\n acceptsStreamResponse,\n direction\n } = {\n ...defaultOptions,\n ...options\n };\n this.action = action;\n this.historyChanged = historyChanged;\n this.referrer = referrer;\n this.snapshot = snapshot;\n this.snapshotHTML = snapshotHTML;\n this.response = response;\n this.isSamePage = this.delegate.locationWithActionIsSamePage(this.location, this.action);\n this.isPageRefresh = this.view.isPageRefresh(this);\n this.visitCachedSnapshot = visitCachedSnapshot;\n this.willRender = willRender;\n this.updateHistory = updateHistory;\n this.scrolled = !willRender;\n this.shouldCacheSnapshot = shouldCacheSnapshot;\n this.acceptsStreamResponse = acceptsStreamResponse;\n this.direction = direction || Direction[action];\n }\n\n get adapter() {\n return this.delegate.adapter\n }\n\n get view() {\n return this.delegate.view\n }\n\n get history() {\n return this.delegate.history\n }\n\n get restorationData() {\n return this.history.getRestorationDataForIdentifier(this.restorationIdentifier)\n }\n\n get silent() {\n return this.isSamePage\n }\n\n start() {\n if (this.state == VisitState.initialized) {\n this.recordTimingMetric(TimingMetric.visitStart);\n this.state = VisitState.started;\n this.adapter.visitStarted(this);\n this.delegate.visitStarted(this);\n }\n }\n\n cancel() {\n if (this.state == VisitState.started) {\n if (this.request) {\n this.request.cancel();\n }\n this.cancelRender();\n this.state = VisitState.canceled;\n }\n }\n\n complete() {\n if (this.state == VisitState.started) {\n this.recordTimingMetric(TimingMetric.visitEnd);\n this.adapter.visitCompleted(this);\n this.state = VisitState.completed;\n this.followRedirect();\n\n if (!this.followedRedirect) {\n this.delegate.visitCompleted(this);\n }\n }\n }\n\n fail() {\n if (this.state == VisitState.started) {\n this.state = VisitState.failed;\n this.adapter.visitFailed(this);\n this.delegate.visitCompleted(this);\n }\n }\n\n changeHistory() {\n if (!this.historyChanged && this.updateHistory) {\n const actionForHistory = this.location.href === this.referrer?.href ? \"replace\" : this.action;\n const method = getHistoryMethodForAction(actionForHistory);\n this.history.update(method, this.location, this.restorationIdentifier);\n this.historyChanged = true;\n }\n }\n\n issueRequest() {\n if (this.hasPreloadedResponse()) {\n this.simulateRequest();\n } else if (this.shouldIssueRequest() && !this.request) {\n this.request = new FetchRequest(this, FetchMethod.get, this.location);\n this.request.perform();\n }\n }\n\n simulateRequest() {\n if (this.response) {\n this.startRequest();\n this.recordResponse();\n this.finishRequest();\n }\n }\n\n startRequest() {\n this.recordTimingMetric(TimingMetric.requestStart);\n this.adapter.visitRequestStarted(this);\n }\n\n recordResponse(response = this.response) {\n this.response = response;\n if (response) {\n const { statusCode } = response;\n if (isSuccessful(statusCode)) {\n this.adapter.visitRequestCompleted(this);\n } else {\n this.adapter.visitRequestFailedWithStatusCode(this, statusCode);\n }\n }\n }\n\n finishRequest() {\n this.recordTimingMetric(TimingMetric.requestEnd);\n this.adapter.visitRequestFinished(this);\n }\n\n loadResponse() {\n if (this.response) {\n const { statusCode, responseHTML } = this.response;\n this.render(async () => {\n if (this.shouldCacheSnapshot) this.cacheSnapshot();\n if (this.view.renderPromise) await this.view.renderPromise;\n\n if (isSuccessful(statusCode) && responseHTML != null) {\n const snapshot = PageSnapshot.fromHTMLString(responseHTML);\n await this.renderPageSnapshot(snapshot, false);\n\n this.adapter.visitRendered(this);\n this.complete();\n } else {\n await this.view.renderError(PageSnapshot.fromHTMLString(responseHTML), this);\n this.adapter.visitRendered(this);\n this.fail();\n }\n });\n }\n }\n\n getCachedSnapshot() {\n const snapshot = this.view.getCachedSnapshotForLocation(this.location) || this.getPreloadedSnapshot();\n\n if (snapshot && (!getAnchor(this.location) || snapshot.hasAnchor(getAnchor(this.location)))) {\n if (this.action == \"restore\" || snapshot.isPreviewable) {\n return snapshot\n }\n }\n }\n\n getPreloadedSnapshot() {\n if (this.snapshotHTML) {\n return PageSnapshot.fromHTMLString(this.snapshotHTML)\n }\n }\n\n hasCachedSnapshot() {\n return this.getCachedSnapshot() != null\n }\n\n loadCachedSnapshot() {\n const snapshot = this.getCachedSnapshot();\n if (snapshot) {\n const isPreview = this.shouldIssueRequest();\n this.render(async () => {\n this.cacheSnapshot();\n if (this.isSamePage || this.isPageRefresh) {\n this.adapter.visitRendered(this);\n } else {\n if (this.view.renderPromise) await this.view.renderPromise;\n\n await this.renderPageSnapshot(snapshot, isPreview);\n\n this.adapter.visitRendered(this);\n if (!isPreview) {\n this.complete();\n }\n }\n });\n }\n }\n\n followRedirect() {\n if (this.redirectedToLocation && !this.followedRedirect && this.response?.redirected) {\n this.adapter.visitProposedToLocation(this.redirectedToLocation, {\n action: \"replace\",\n response: this.response,\n shouldCacheSnapshot: false,\n willRender: false\n });\n this.followedRedirect = true;\n }\n }\n\n goToSamePageAnchor() {\n if (this.isSamePage) {\n this.render(async () => {\n this.cacheSnapshot();\n this.performScroll();\n this.changeHistory();\n this.adapter.visitRendered(this);\n });\n }\n }\n\n // Fetch request delegate\n\n prepareRequest(request) {\n if (this.acceptsStreamResponse) {\n request.acceptResponseType(StreamMessage.contentType);\n }\n }\n\n requestStarted() {\n this.startRequest();\n }\n\n requestPreventedHandlingResponse(_request, _response) {}\n\n async requestSucceededWithResponse(request, response) {\n const responseHTML = await response.responseHTML;\n const { redirected, statusCode } = response;\n if (responseHTML == undefined) {\n this.recordResponse({\n statusCode: SystemStatusCode.contentTypeMismatch,\n redirected\n });\n } else {\n this.redirectedToLocation = response.redirected ? response.location : undefined;\n this.recordResponse({ statusCode: statusCode, responseHTML, redirected });\n }\n }\n\n async requestFailedWithResponse(request, response) {\n const responseHTML = await response.responseHTML;\n const { redirected, statusCode } = response;\n if (responseHTML == undefined) {\n this.recordResponse({\n statusCode: SystemStatusCode.contentTypeMismatch,\n redirected\n });\n } else {\n this.recordResponse({ statusCode: statusCode, responseHTML, redirected });\n }\n }\n\n requestErrored(_request, _error) {\n this.recordResponse({\n statusCode: SystemStatusCode.networkFailure,\n redirected: false\n });\n }\n\n requestFinished() {\n this.finishRequest();\n }\n\n // Scrolling\n\n performScroll() {\n if (!this.scrolled && !this.view.forceReloaded && !this.view.shouldPreserveScrollPosition(this)) {\n if (this.action == \"restore\") {\n this.scrollToRestoredPosition() || this.scrollToAnchor() || this.view.scrollToTop();\n } else {\n this.scrollToAnchor() || this.view.scrollToTop();\n }\n if (this.isSamePage) {\n this.delegate.visitScrolledToSamePageLocation(this.view.lastRenderedLocation, this.location);\n }\n\n this.scrolled = true;\n }\n }\n\n scrollToRestoredPosition() {\n const { scrollPosition } = this.restorationData;\n if (scrollPosition) {\n this.view.scrollToPosition(scrollPosition);\n return true\n }\n }\n\n scrollToAnchor() {\n const anchor = getAnchor(this.location);\n if (anchor != null) {\n this.view.scrollToAnchor(anchor);\n return true\n }\n }\n\n // Instrumentation\n\n recordTimingMetric(metric) {\n this.timingMetrics[metric] = new Date().getTime();\n }\n\n getTimingMetrics() {\n return { ...this.timingMetrics }\n }\n\n // Private\n\n getHistoryMethodForAction(action) {\n switch (action) {\n case \"replace\":\n return history.replaceState\n case \"advance\":\n case \"restore\":\n return history.pushState\n }\n }\n\n hasPreloadedResponse() {\n return typeof this.response == \"object\"\n }\n\n shouldIssueRequest() {\n if (this.isSamePage) {\n return false\n } else if (this.action == \"restore\") {\n return !this.hasCachedSnapshot()\n } else {\n return this.willRender\n }\n }\n\n cacheSnapshot() {\n if (!this.snapshotCached) {\n this.view.cacheSnapshot(this.snapshot).then((snapshot) => snapshot && this.visitCachedSnapshot(snapshot));\n this.snapshotCached = true;\n }\n }\n\n async render(callback) {\n this.cancelRender();\n await new Promise((resolve) => {\n this.frame =\n document.visibilityState === \"hidden\" ? setTimeout(() => resolve(), 0) : requestAnimationFrame(() => resolve());\n });\n await callback();\n delete this.frame;\n }\n\n async renderPageSnapshot(snapshot, isPreview) {\n await this.viewTransitioner.renderChange(this.view.shouldTransitionTo(snapshot), async () => {\n await this.view.renderPage(snapshot, isPreview, this.willRender, this);\n this.performScroll();\n });\n }\n\n cancelRender() {\n if (this.frame) {\n cancelAnimationFrame(this.frame);\n delete this.frame;\n }\n }\n}\n\nfunction isSuccessful(statusCode) {\n return statusCode >= 200 && statusCode < 300\n}\n\nclass BrowserAdapter {\n progressBar = new ProgressBar()\n\n constructor(session) {\n this.session = session;\n }\n\n visitProposedToLocation(location, options) {\n if (locationIsVisitable(location, this.navigator.rootLocation)) {\n this.navigator.startVisit(location, options?.restorationIdentifier || uuid(), options);\n } else {\n window.location.href = location.toString();\n }\n }\n\n visitStarted(visit) {\n this.location = visit.location;\n visit.loadCachedSnapshot();\n visit.issueRequest();\n visit.goToSamePageAnchor();\n }\n\n visitRequestStarted(visit) {\n this.progressBar.setValue(0);\n if (visit.hasCachedSnapshot() || visit.action != \"restore\") {\n this.showVisitProgressBarAfterDelay();\n } else {\n this.showProgressBar();\n }\n }\n\n visitRequestCompleted(visit) {\n visit.loadResponse();\n }\n\n visitRequestFailedWithStatusCode(visit, statusCode) {\n switch (statusCode) {\n case SystemStatusCode.networkFailure:\n case SystemStatusCode.timeoutFailure:\n case SystemStatusCode.contentTypeMismatch:\n return this.reload({\n reason: \"request_failed\",\n context: {\n statusCode\n }\n })\n default:\n return visit.loadResponse()\n }\n }\n\n visitRequestFinished(_visit) {}\n\n visitCompleted(_visit) {\n this.progressBar.setValue(1);\n this.hideVisitProgressBar();\n }\n\n pageInvalidated(reason) {\n this.reload(reason);\n }\n\n visitFailed(_visit) {\n this.progressBar.setValue(1);\n this.hideVisitProgressBar();\n }\n\n visitRendered(_visit) {}\n\n // Form Submission Delegate\n\n formSubmissionStarted(_formSubmission) {\n this.progressBar.setValue(0);\n this.showFormProgressBarAfterDelay();\n }\n\n formSubmissionFinished(_formSubmission) {\n this.progressBar.setValue(1);\n this.hideFormProgressBar();\n }\n\n // Private\n\n showVisitProgressBarAfterDelay() {\n this.visitProgressBarTimeout = window.setTimeout(this.showProgressBar, this.session.progressBarDelay);\n }\n\n hideVisitProgressBar() {\n this.progressBar.hide();\n if (this.visitProgressBarTimeout != null) {\n window.clearTimeout(this.visitProgressBarTimeout);\n delete this.visitProgressBarTimeout;\n }\n }\n\n showFormProgressBarAfterDelay() {\n if (this.formProgressBarTimeout == null) {\n this.formProgressBarTimeout = window.setTimeout(this.showProgressBar, this.session.progressBarDelay);\n }\n }\n\n hideFormProgressBar() {\n this.progressBar.hide();\n if (this.formProgressBarTimeout != null) {\n window.clearTimeout(this.formProgressBarTimeout);\n delete this.formProgressBarTimeout;\n }\n }\n\n showProgressBar = () => {\n this.progressBar.show();\n }\n\n reload(reason) {\n dispatch(\"turbo:reload\", { detail: reason });\n\n window.location.href = this.location?.toString() || window.location.href;\n }\n\n get navigator() {\n return this.session.navigator\n }\n}\n\nclass CacheObserver {\n selector = \"[data-turbo-temporary]\"\n deprecatedSelector = \"[data-turbo-cache=false]\"\n\n started = false\n\n start() {\n if (!this.started) {\n this.started = true;\n addEventListener(\"turbo:before-cache\", this.removeTemporaryElements, false);\n }\n }\n\n stop() {\n if (this.started) {\n this.started = false;\n removeEventListener(\"turbo:before-cache\", this.removeTemporaryElements, false);\n }\n }\n\n removeTemporaryElements = (_event) => {\n for (const element of this.temporaryElements) {\n element.remove();\n }\n }\n\n get temporaryElements() {\n return [...document.querySelectorAll(this.selector), ...this.temporaryElementsWithDeprecation]\n }\n\n get temporaryElementsWithDeprecation() {\n const elements = document.querySelectorAll(this.deprecatedSelector);\n\n if (elements.length) {\n console.warn(\n `The ${this.deprecatedSelector} selector is deprecated and will be removed in a future version. Use ${this.selector} instead.`\n );\n }\n\n return [...elements]\n }\n}\n\nclass FrameRedirector {\n constructor(session, element) {\n this.session = session;\n this.element = element;\n this.linkInterceptor = new LinkInterceptor(this, element);\n this.formSubmitObserver = new FormSubmitObserver(this, element);\n }\n\n start() {\n this.linkInterceptor.start();\n this.formSubmitObserver.start();\n }\n\n stop() {\n this.linkInterceptor.stop();\n this.formSubmitObserver.stop();\n }\n\n // Link interceptor delegate\n\n shouldInterceptLinkClick(element, _location, _event) {\n return this.#shouldRedirect(element)\n }\n\n linkClickIntercepted(element, url, event) {\n const frame = this.#findFrameElement(element);\n if (frame) {\n frame.delegate.linkClickIntercepted(element, url, event);\n }\n }\n\n // Form submit observer delegate\n\n willSubmitForm(element, submitter) {\n return (\n element.closest(\"turbo-frame\") == null &&\n this.#shouldSubmit(element, submitter) &&\n this.#shouldRedirect(element, submitter)\n )\n }\n\n formSubmitted(element, submitter) {\n const frame = this.#findFrameElement(element, submitter);\n if (frame) {\n frame.delegate.formSubmitted(element, submitter);\n }\n }\n\n #shouldSubmit(form, submitter) {\n const action = getAction$1(form, submitter);\n const meta = this.element.ownerDocument.querySelector(`meta[name=\"turbo-root\"]`);\n const rootLocation = expandURL(meta?.content ?? \"/\");\n\n return this.#shouldRedirect(form, submitter) && locationIsVisitable(action, rootLocation)\n }\n\n #shouldRedirect(element, submitter) {\n const isNavigatable =\n element instanceof HTMLFormElement\n ? this.session.submissionIsNavigatable(element, submitter)\n : this.session.elementIsNavigatable(element);\n\n if (isNavigatable) {\n const frame = this.#findFrameElement(element, submitter);\n return frame ? frame != element.closest(\"turbo-frame\") : false\n } else {\n return false\n }\n }\n\n #findFrameElement(element, submitter) {\n const id = submitter?.getAttribute(\"data-turbo-frame\") || element.getAttribute(\"data-turbo-frame\");\n if (id && id != \"_top\") {\n const frame = this.element.querySelector(`#${id}:not([disabled])`);\n if (frame instanceof FrameElement) {\n return frame\n }\n }\n }\n}\n\nclass History {\n location\n restorationIdentifier = uuid()\n restorationData = {}\n started = false\n pageLoaded = false\n currentIndex = 0\n\n constructor(delegate) {\n this.delegate = delegate;\n }\n\n start() {\n if (!this.started) {\n addEventListener(\"popstate\", this.onPopState, false);\n addEventListener(\"load\", this.onPageLoad, false);\n this.currentIndex = history.state?.turbo?.restorationIndex || 0;\n this.started = true;\n this.replace(new URL(window.location.href));\n }\n }\n\n stop() {\n if (this.started) {\n removeEventListener(\"popstate\", this.onPopState, false);\n removeEventListener(\"load\", this.onPageLoad, false);\n this.started = false;\n }\n }\n\n push(location, restorationIdentifier) {\n this.update(history.pushState, location, restorationIdentifier);\n }\n\n replace(location, restorationIdentifier) {\n this.update(history.replaceState, location, restorationIdentifier);\n }\n\n update(method, location, restorationIdentifier = uuid()) {\n if (method === history.pushState) ++this.currentIndex;\n\n const state = { turbo: { restorationIdentifier, restorationIndex: this.currentIndex } };\n method.call(history, state, \"\", location.href);\n this.location = location;\n this.restorationIdentifier = restorationIdentifier;\n }\n\n // Restoration data\n\n getRestorationDataForIdentifier(restorationIdentifier) {\n return this.restorationData[restorationIdentifier] || {}\n }\n\n updateRestorationData(additionalData) {\n const { restorationIdentifier } = this;\n const restorationData = this.restorationData[restorationIdentifier];\n this.restorationData[restorationIdentifier] = {\n ...restorationData,\n ...additionalData\n };\n }\n\n // Scroll restoration\n\n assumeControlOfScrollRestoration() {\n if (!this.previousScrollRestoration) {\n this.previousScrollRestoration = history.scrollRestoration ?? \"auto\";\n history.scrollRestoration = \"manual\";\n }\n }\n\n relinquishControlOfScrollRestoration() {\n if (this.previousScrollRestoration) {\n history.scrollRestoration = this.previousScrollRestoration;\n delete this.previousScrollRestoration;\n }\n }\n\n // Event handlers\n\n onPopState = (event) => {\n if (this.shouldHandlePopState()) {\n const { turbo } = event.state || {};\n if (turbo) {\n this.location = new URL(window.location.href);\n const { restorationIdentifier, restorationIndex } = turbo;\n this.restorationIdentifier = restorationIdentifier;\n const direction = restorationIndex > this.currentIndex ? \"forward\" : \"back\";\n this.delegate.historyPoppedToLocationWithRestorationIdentifierAndDirection(this.location, restorationIdentifier, direction);\n this.currentIndex = restorationIndex;\n }\n }\n }\n\n onPageLoad = async (_event) => {\n await nextMicrotask();\n this.pageLoaded = true;\n }\n\n // Private\n\n shouldHandlePopState() {\n // Safari dispatches a popstate event after window's load event, ignore it\n return this.pageIsLoaded()\n }\n\n pageIsLoaded() {\n return this.pageLoaded || document.readyState == \"complete\"\n }\n}\n\nclass LinkPrefetchObserver {\n started = false\n #prefetchedLink = null\n\n constructor(delegate, eventTarget) {\n this.delegate = delegate;\n this.eventTarget = eventTarget;\n }\n\n start() {\n if (this.started) return\n\n if (this.eventTarget.readyState === \"loading\") {\n this.eventTarget.addEventListener(\"DOMContentLoaded\", this.#enable, { once: true });\n } else {\n this.#enable();\n }\n }\n\n stop() {\n if (!this.started) return\n\n this.eventTarget.removeEventListener(\"mouseenter\", this.#tryToPrefetchRequest, {\n capture: true,\n passive: true\n });\n this.eventTarget.removeEventListener(\"mouseleave\", this.#cancelRequestIfObsolete, {\n capture: true,\n passive: true\n });\n\n this.eventTarget.removeEventListener(\"turbo:before-fetch-request\", this.#tryToUsePrefetchedRequest, true);\n this.started = false;\n }\n\n #enable = () => {\n this.eventTarget.addEventListener(\"mouseenter\", this.#tryToPrefetchRequest, {\n capture: true,\n passive: true\n });\n this.eventTarget.addEventListener(\"mouseleave\", this.#cancelRequestIfObsolete, {\n capture: true,\n passive: true\n });\n\n this.eventTarget.addEventListener(\"turbo:before-fetch-request\", this.#tryToUsePrefetchedRequest, true);\n this.started = true;\n }\n\n #tryToPrefetchRequest = (event) => {\n if (getMetaContent(\"turbo-prefetch\") === \"false\") return\n\n const target = event.target;\n const isLink = target.matches && target.matches(\"a[href]:not([target^=_]):not([download])\");\n\n if (isLink && this.#isPrefetchable(target)) {\n const link = target;\n const location = getLocationForLink(link);\n\n if (this.delegate.canPrefetchRequestToLocation(link, location)) {\n this.#prefetchedLink = link;\n\n const fetchRequest = new FetchRequest(\n this,\n FetchMethod.get,\n location,\n new URLSearchParams(),\n target\n );\n\n prefetchCache.setLater(location.toString(), fetchRequest, this.#cacheTtl);\n }\n }\n }\n\n #cancelRequestIfObsolete = (event) => {\n if (event.target === this.#prefetchedLink) this.#cancelPrefetchRequest();\n }\n\n #cancelPrefetchRequest = () => {\n prefetchCache.clear();\n this.#prefetchedLink = null;\n }\n\n #tryToUsePrefetchedRequest = (event) => {\n if (event.target.tagName !== \"FORM\" && event.detail.fetchOptions.method === \"GET\") {\n const cached = prefetchCache.get(event.detail.url.toString());\n\n if (cached) {\n // User clicked link, use cache response\n event.detail.fetchRequest = cached;\n }\n\n prefetchCache.clear();\n }\n }\n\n prepareRequest(request) {\n const link = request.target;\n\n request.headers[\"X-Sec-Purpose\"] = \"prefetch\";\n\n const turboFrame = link.closest(\"turbo-frame\");\n const turboFrameTarget = link.getAttribute(\"data-turbo-frame\") || turboFrame?.getAttribute(\"target\") || turboFrame?.id;\n\n if (turboFrameTarget && turboFrameTarget !== \"_top\") {\n request.headers[\"Turbo-Frame\"] = turboFrameTarget;\n }\n }\n\n // Fetch request interface\n\n requestSucceededWithResponse() {}\n\n requestStarted(fetchRequest) {}\n\n requestErrored(fetchRequest) {}\n\n requestFinished(fetchRequest) {}\n\n requestPreventedHandlingResponse(fetchRequest, fetchResponse) {}\n\n requestFailedWithResponse(fetchRequest, fetchResponse) {}\n\n get #cacheTtl() {\n return Number(getMetaContent(\"turbo-prefetch-cache-time\")) || cacheTtl\n }\n\n #isPrefetchable(link) {\n const href = link.getAttribute(\"href\");\n\n if (!href) return false\n\n if (unfetchableLink(link)) return false\n if (linkToTheSamePage(link)) return false\n if (linkOptsOut(link)) return false\n if (nonSafeLink(link)) return false\n if (eventPrevented(link)) return false\n\n return true\n }\n}\n\nconst unfetchableLink = (link) => {\n return link.origin !== document.location.origin || ![\"http:\", \"https:\"].includes(link.protocol) || link.hasAttribute(\"target\")\n};\n\nconst linkToTheSamePage = (link) => {\n return (link.pathname + link.search === document.location.pathname + document.location.search) || link.href.startsWith(\"#\")\n};\n\nconst linkOptsOut = (link) => {\n if (link.getAttribute(\"data-turbo-prefetch\") === \"false\") return true\n if (link.getAttribute(\"data-turbo\") === \"false\") return true\n\n const turboPrefetchParent = findClosestRecursively(link, \"[data-turbo-prefetch]\");\n if (turboPrefetchParent && turboPrefetchParent.getAttribute(\"data-turbo-prefetch\") === \"false\") return true\n\n return false\n};\n\nconst nonSafeLink = (link) => {\n const turboMethod = link.getAttribute(\"data-turbo-method\");\n if (turboMethod && turboMethod.toLowerCase() !== \"get\") return true\n\n if (isUJS(link)) return true\n if (link.hasAttribute(\"data-turbo-confirm\")) return true\n if (link.hasAttribute(\"data-turbo-stream\")) return true\n\n return false\n};\n\nconst isUJS = (link) => {\n return link.hasAttribute(\"data-remote\") || link.hasAttribute(\"data-behavior\") || link.hasAttribute(\"data-confirm\") || link.hasAttribute(\"data-method\")\n};\n\nconst eventPrevented = (link) => {\n const event = dispatch(\"turbo:before-prefetch\", { target: link, cancelable: true });\n return event.defaultPrevented\n};\n\nclass Navigator {\n constructor(delegate) {\n this.delegate = delegate;\n }\n\n proposeVisit(location, options = {}) {\n if (this.delegate.allowsVisitingLocationWithAction(location, options.action)) {\n this.delegate.visitProposedToLocation(location, options);\n }\n }\n\n startVisit(locatable, restorationIdentifier, options = {}) {\n this.stop();\n this.currentVisit = new Visit(this, expandURL(locatable), restorationIdentifier, {\n referrer: this.location,\n ...options\n });\n this.currentVisit.start();\n }\n\n submitForm(form, submitter) {\n this.stop();\n this.formSubmission = new FormSubmission(this, form, submitter, true);\n\n this.formSubmission.start();\n }\n\n stop() {\n if (this.formSubmission) {\n this.formSubmission.stop();\n delete this.formSubmission;\n }\n\n if (this.currentVisit) {\n this.currentVisit.cancel();\n delete this.currentVisit;\n }\n }\n\n get adapter() {\n return this.delegate.adapter\n }\n\n get view() {\n return this.delegate.view\n }\n\n get rootLocation() {\n return this.view.snapshot.rootLocation\n }\n\n get history() {\n return this.delegate.history\n }\n\n // Form submission delegate\n\n formSubmissionStarted(formSubmission) {\n // Not all adapters implement formSubmissionStarted\n if (typeof this.adapter.formSubmissionStarted === \"function\") {\n this.adapter.formSubmissionStarted(formSubmission);\n }\n }\n\n async formSubmissionSucceededWithResponse(formSubmission, fetchResponse) {\n if (formSubmission == this.formSubmission) {\n const responseHTML = await fetchResponse.responseHTML;\n if (responseHTML) {\n const shouldCacheSnapshot = formSubmission.isSafe;\n if (!shouldCacheSnapshot) {\n this.view.clearSnapshotCache();\n }\n\n const { statusCode, redirected } = fetchResponse;\n const action = this.#getActionForFormSubmission(formSubmission, fetchResponse);\n const visitOptions = {\n action,\n shouldCacheSnapshot,\n response: { statusCode, responseHTML, redirected }\n };\n this.proposeVisit(fetchResponse.location, visitOptions);\n }\n }\n }\n\n async formSubmissionFailedWithResponse(formSubmission, fetchResponse) {\n const responseHTML = await fetchResponse.responseHTML;\n\n if (responseHTML) {\n const snapshot = PageSnapshot.fromHTMLString(responseHTML);\n if (fetchResponse.serverError) {\n await this.view.renderError(snapshot, this.currentVisit);\n } else {\n await this.view.renderPage(snapshot, false, true, this.currentVisit);\n }\n if(!snapshot.shouldPreserveScrollPosition) {\n this.view.scrollToTop();\n }\n this.view.clearSnapshotCache();\n }\n }\n\n formSubmissionErrored(formSubmission, error) {\n console.error(error);\n }\n\n formSubmissionFinished(formSubmission) {\n // Not all adapters implement formSubmissionFinished\n if (typeof this.adapter.formSubmissionFinished === \"function\") {\n this.adapter.formSubmissionFinished(formSubmission);\n }\n }\n\n // Visit delegate\n\n visitStarted(visit) {\n this.delegate.visitStarted(visit);\n }\n\n visitCompleted(visit) {\n this.delegate.visitCompleted(visit);\n delete this.currentVisit;\n }\n\n locationWithActionIsSamePage(location, action) {\n const anchor = getAnchor(location);\n const currentAnchor = getAnchor(this.view.lastRenderedLocation);\n const isRestorationToTop = action === \"restore\" && typeof anchor === \"undefined\";\n\n return (\n action !== \"replace\" &&\n getRequestURL(location) === getRequestURL(this.view.lastRenderedLocation) &&\n (isRestorationToTop || (anchor != null && anchor !== currentAnchor))\n )\n }\n\n visitScrolledToSamePageLocation(oldURL, newURL) {\n this.delegate.visitScrolledToSamePageLocation(oldURL, newURL);\n }\n\n // Visits\n\n get location() {\n return this.history.location\n }\n\n get restorationIdentifier() {\n return this.history.restorationIdentifier\n }\n\n #getActionForFormSubmission(formSubmission, fetchResponse) {\n const { submitter, formElement } = formSubmission;\n return getVisitAction(submitter, formElement) || this.#getDefaultAction(fetchResponse)\n }\n\n #getDefaultAction(fetchResponse) {\n const sameLocationRedirect = fetchResponse.redirected && fetchResponse.location.href === this.location?.href;\n return sameLocationRedirect ? \"replace\" : \"advance\"\n }\n}\n\nconst PageStage = {\n initial: 0,\n loading: 1,\n interactive: 2,\n complete: 3\n};\n\nclass PageObserver {\n stage = PageStage.initial\n started = false\n\n constructor(delegate) {\n this.delegate = delegate;\n }\n\n start() {\n if (!this.started) {\n if (this.stage == PageStage.initial) {\n this.stage = PageStage.loading;\n }\n document.addEventListener(\"readystatechange\", this.interpretReadyState, false);\n addEventListener(\"pagehide\", this.pageWillUnload, false);\n this.started = true;\n }\n }\n\n stop() {\n if (this.started) {\n document.removeEventListener(\"readystatechange\", this.interpretReadyState, false);\n removeEventListener(\"pagehide\", this.pageWillUnload, false);\n this.started = false;\n }\n }\n\n interpretReadyState = () => {\n const { readyState } = this;\n if (readyState == \"interactive\") {\n this.pageIsInteractive();\n } else if (readyState == \"complete\") {\n this.pageIsComplete();\n }\n }\n\n pageIsInteractive() {\n if (this.stage == PageStage.loading) {\n this.stage = PageStage.interactive;\n this.delegate.pageBecameInteractive();\n }\n }\n\n pageIsComplete() {\n this.pageIsInteractive();\n if (this.stage == PageStage.interactive) {\n this.stage = PageStage.complete;\n this.delegate.pageLoaded();\n }\n }\n\n pageWillUnload = () => {\n this.delegate.pageWillUnload();\n }\n\n get readyState() {\n return document.readyState\n }\n}\n\nclass ScrollObserver {\n started = false\n\n constructor(delegate) {\n this.delegate = delegate;\n }\n\n start() {\n if (!this.started) {\n addEventListener(\"scroll\", this.onScroll, false);\n this.onScroll();\n this.started = true;\n }\n }\n\n stop() {\n if (this.started) {\n removeEventListener(\"scroll\", this.onScroll, false);\n this.started = false;\n }\n }\n\n onScroll = () => {\n this.updatePosition({ x: window.pageXOffset, y: window.pageYOffset });\n }\n\n // Private\n\n updatePosition(position) {\n this.delegate.scrollPositionChanged(position);\n }\n}\n\nclass StreamMessageRenderer {\n render({ fragment }) {\n Bardo.preservingPermanentElements(this, getPermanentElementMapForFragment(fragment), () => {\n withAutofocusFromFragment(fragment, () => {\n withPreservedFocus(() => {\n document.documentElement.appendChild(fragment);\n });\n });\n });\n }\n\n // Bardo delegate\n\n enteringBardo(currentPermanentElement, newPermanentElement) {\n newPermanentElement.replaceWith(currentPermanentElement.cloneNode(true));\n }\n\n leavingBardo() {}\n}\n\nfunction getPermanentElementMapForFragment(fragment) {\n const permanentElementsInDocument = queryPermanentElementsAll(document.documentElement);\n const permanentElementMap = {};\n for (const permanentElementInDocument of permanentElementsInDocument) {\n const { id } = permanentElementInDocument;\n\n for (const streamElement of fragment.querySelectorAll(\"turbo-stream\")) {\n const elementInStream = getPermanentElementById(streamElement.templateElement.content, id);\n\n if (elementInStream) {\n permanentElementMap[id] = [permanentElementInDocument, elementInStream];\n }\n }\n }\n\n return permanentElementMap\n}\n\nasync function withAutofocusFromFragment(fragment, callback) {\n const generatedID = `turbo-stream-autofocus-${uuid()}`;\n const turboStreams = fragment.querySelectorAll(\"turbo-stream\");\n const elementWithAutofocus = firstAutofocusableElementInStreams(turboStreams);\n let willAutofocusId = null;\n\n if (elementWithAutofocus) {\n if (elementWithAutofocus.id) {\n willAutofocusId = elementWithAutofocus.id;\n } else {\n willAutofocusId = generatedID;\n }\n\n elementWithAutofocus.id = willAutofocusId;\n }\n\n callback();\n await nextRepaint();\n\n const hasNoActiveElement = document.activeElement == null || document.activeElement == document.body;\n\n if (hasNoActiveElement && willAutofocusId) {\n const elementToAutofocus = document.getElementById(willAutofocusId);\n\n if (elementIsFocusable(elementToAutofocus)) {\n elementToAutofocus.focus();\n }\n if (elementToAutofocus && elementToAutofocus.id == generatedID) {\n elementToAutofocus.removeAttribute(\"id\");\n }\n }\n}\n\nasync function withPreservedFocus(callback) {\n const [activeElementBeforeRender, activeElementAfterRender] = await around(callback, () => document.activeElement);\n\n const restoreFocusTo = activeElementBeforeRender && activeElementBeforeRender.id;\n\n if (restoreFocusTo) {\n const elementToFocus = document.getElementById(restoreFocusTo);\n\n if (elementIsFocusable(elementToFocus) && elementToFocus != activeElementAfterRender) {\n elementToFocus.focus();\n }\n }\n}\n\nfunction firstAutofocusableElementInStreams(nodeListOfStreamElements) {\n for (const streamElement of nodeListOfStreamElements) {\n const elementWithAutofocus = queryAutofocusableElement(streamElement.templateElement.content);\n\n if (elementWithAutofocus) return elementWithAutofocus\n }\n\n return null\n}\n\nclass StreamObserver {\n sources = new Set()\n #started = false\n\n constructor(delegate) {\n this.delegate = delegate;\n }\n\n start() {\n if (!this.#started) {\n this.#started = true;\n addEventListener(\"turbo:before-fetch-response\", this.inspectFetchResponse, false);\n }\n }\n\n stop() {\n if (this.#started) {\n this.#started = false;\n removeEventListener(\"turbo:before-fetch-response\", this.inspectFetchResponse, false);\n }\n }\n\n connectStreamSource(source) {\n if (!this.streamSourceIsConnected(source)) {\n this.sources.add(source);\n source.addEventListener(\"message\", this.receiveMessageEvent, false);\n }\n }\n\n disconnectStreamSource(source) {\n if (this.streamSourceIsConnected(source)) {\n this.sources.delete(source);\n source.removeEventListener(\"message\", this.receiveMessageEvent, false);\n }\n }\n\n streamSourceIsConnected(source) {\n return this.sources.has(source)\n }\n\n inspectFetchResponse = (event) => {\n const response = fetchResponseFromEvent(event);\n if (response && fetchResponseIsStream(response)) {\n event.preventDefault();\n this.receiveMessageResponse(response);\n }\n }\n\n receiveMessageEvent = (event) => {\n if (this.#started && typeof event.data == \"string\") {\n this.receiveMessageHTML(event.data);\n }\n }\n\n async receiveMessageResponse(response) {\n const html = await response.responseHTML;\n if (html) {\n this.receiveMessageHTML(html);\n }\n }\n\n receiveMessageHTML(html) {\n this.delegate.receivedMessageFromStream(StreamMessage.wrap(html));\n }\n}\n\nfunction fetchResponseFromEvent(event) {\n const fetchResponse = event.detail?.fetchResponse;\n if (fetchResponse instanceof FetchResponse) {\n return fetchResponse\n }\n}\n\nfunction fetchResponseIsStream(response) {\n const contentType = response.contentType ?? \"\";\n return contentType.startsWith(StreamMessage.contentType)\n}\n\nclass ErrorRenderer extends Renderer {\n static renderElement(currentElement, newElement) {\n const { documentElement, body } = document;\n\n documentElement.replaceChild(newElement, body);\n }\n\n async render() {\n this.replaceHeadAndBody();\n this.activateScriptElements();\n }\n\n replaceHeadAndBody() {\n const { documentElement, head } = document;\n documentElement.replaceChild(this.newHead, head);\n this.renderElement(this.currentElement, this.newElement);\n }\n\n activateScriptElements() {\n for (const replaceableElement of this.scriptElements) {\n const parentNode = replaceableElement.parentNode;\n if (parentNode) {\n const element = activateScriptElement(replaceableElement);\n parentNode.replaceChild(element, replaceableElement);\n }\n }\n }\n\n get newHead() {\n return this.newSnapshot.headSnapshot.element\n }\n\n get scriptElements() {\n return document.documentElement.querySelectorAll(\"script\")\n }\n}\n\nclass PageRenderer extends Renderer {\n static renderElement(currentElement, newElement) {\n if (document.body && newElement instanceof HTMLBodyElement) {\n document.body.replaceWith(newElement);\n } else {\n document.documentElement.appendChild(newElement);\n }\n }\n\n get shouldRender() {\n return this.newSnapshot.isVisitable && this.trackedElementsAreIdentical\n }\n\n get reloadReason() {\n if (!this.newSnapshot.isVisitable) {\n return {\n reason: \"turbo_visit_control_is_reload\"\n }\n }\n\n if (!this.trackedElementsAreIdentical) {\n return {\n reason: \"tracked_element_mismatch\"\n }\n }\n }\n\n async prepareToRender() {\n this.#setLanguage();\n await this.mergeHead();\n }\n\n async render() {\n if (this.willRender) {\n await this.replaceBody();\n }\n }\n\n finishRendering() {\n super.finishRendering();\n if (!this.isPreview) {\n this.focusFirstAutofocusableElement();\n }\n }\n\n get currentHeadSnapshot() {\n return this.currentSnapshot.headSnapshot\n }\n\n get newHeadSnapshot() {\n return this.newSnapshot.headSnapshot\n }\n\n get newElement() {\n return this.newSnapshot.element\n }\n\n #setLanguage() {\n const { documentElement } = this.currentSnapshot;\n const { lang } = this.newSnapshot;\n\n if (lang) {\n documentElement.setAttribute(\"lang\", lang);\n } else {\n documentElement.removeAttribute(\"lang\");\n }\n }\n\n async mergeHead() {\n const mergedHeadElements = this.mergeProvisionalElements();\n const newStylesheetElements = this.copyNewHeadStylesheetElements();\n this.copyNewHeadScriptElements();\n\n await mergedHeadElements;\n await newStylesheetElements;\n\n if (this.willRender) {\n this.removeUnusedDynamicStylesheetElements();\n }\n }\n\n async replaceBody() {\n await this.preservingPermanentElements(async () => {\n this.activateNewBody();\n await this.assignNewBody();\n });\n }\n\n get trackedElementsAreIdentical() {\n return this.currentHeadSnapshot.trackedElementSignature == this.newHeadSnapshot.trackedElementSignature\n }\n\n async copyNewHeadStylesheetElements() {\n const loadingElements = [];\n\n for (const element of this.newHeadStylesheetElements) {\n loadingElements.push(waitForLoad(element));\n\n document.head.appendChild(element);\n }\n\n await Promise.all(loadingElements);\n }\n\n copyNewHeadScriptElements() {\n for (const element of this.newHeadScriptElements) {\n document.head.appendChild(activateScriptElement(element));\n }\n }\n\n removeUnusedDynamicStylesheetElements() {\n for (const element of this.unusedDynamicStylesheetElements) {\n document.head.removeChild(element);\n }\n }\n\n async mergeProvisionalElements() {\n const newHeadElements = [...this.newHeadProvisionalElements];\n\n for (const element of this.currentHeadProvisionalElements) {\n if (!this.isCurrentElementInElementList(element, newHeadElements)) {\n document.head.removeChild(element);\n }\n }\n\n for (const element of newHeadElements) {\n document.head.appendChild(element);\n }\n }\n\n isCurrentElementInElementList(element, elementList) {\n for (const [index, newElement] of elementList.entries()) {\n // if title element...\n if (element.tagName == \"TITLE\") {\n if (newElement.tagName != \"TITLE\") {\n continue\n }\n if (element.innerHTML == newElement.innerHTML) {\n elementList.splice(index, 1);\n return true\n }\n }\n\n // if any other element...\n if (newElement.isEqualNode(element)) {\n elementList.splice(index, 1);\n return true\n }\n }\n\n return false\n }\n\n removeCurrentHeadProvisionalElements() {\n for (const element of this.currentHeadProvisionalElements) {\n document.head.removeChild(element);\n }\n }\n\n copyNewHeadProvisionalElements() {\n for (const element of this.newHeadProvisionalElements) {\n document.head.appendChild(element);\n }\n }\n\n activateNewBody() {\n document.adoptNode(this.newElement);\n this.activateNewBodyScriptElements();\n }\n\n activateNewBodyScriptElements() {\n for (const inertScriptElement of this.newBodyScriptElements) {\n const activatedScriptElement = activateScriptElement(inertScriptElement);\n inertScriptElement.replaceWith(activatedScriptElement);\n }\n }\n\n async assignNewBody() {\n await this.renderElement(this.currentElement, this.newElement);\n }\n\n get unusedDynamicStylesheetElements() {\n return this.oldHeadStylesheetElements.filter((element) => {\n return element.getAttribute(\"data-turbo-track\") === \"dynamic\"\n })\n }\n\n get oldHeadStylesheetElements() {\n return this.currentHeadSnapshot.getStylesheetElementsNotInSnapshot(this.newHeadSnapshot)\n }\n\n get newHeadStylesheetElements() {\n return this.newHeadSnapshot.getStylesheetElementsNotInSnapshot(this.currentHeadSnapshot)\n }\n\n get newHeadScriptElements() {\n return this.newHeadSnapshot.getScriptElementsNotInSnapshot(this.currentHeadSnapshot)\n }\n\n get currentHeadProvisionalElements() {\n return this.currentHeadSnapshot.provisionalElements\n }\n\n get newHeadProvisionalElements() {\n return this.newHeadSnapshot.provisionalElements\n }\n\n get newBodyScriptElements() {\n return this.newElement.querySelectorAll(\"script\")\n }\n}\n\nclass MorphingPageRenderer extends PageRenderer {\n static renderElement(currentElement, newElement) {\n morphElements(currentElement, newElement, {\n callbacks: {\n beforeNodeMorphed: element => !canRefreshFrame(element)\n }\n });\n\n for (const frame of currentElement.querySelectorAll(\"turbo-frame\")) {\n if (canRefreshFrame(frame)) frame.reload();\n }\n\n dispatch(\"turbo:morph\", { detail: { currentElement, newElement } });\n }\n\n async preservingPermanentElements(callback) {\n return await callback()\n }\n\n get renderMethod() {\n return \"morph\"\n }\n\n get shouldAutofocus() {\n return false\n }\n}\n\nfunction canRefreshFrame(frame) {\n return frame instanceof FrameElement &&\n frame.src &&\n frame.refresh === \"morph\" &&\n !frame.closest(\"[data-turbo-permanent]\")\n}\n\nclass SnapshotCache {\n keys = []\n snapshots = {}\n\n constructor(size) {\n this.size = size;\n }\n\n has(location) {\n return toCacheKey(location) in this.snapshots\n }\n\n get(location) {\n if (this.has(location)) {\n const snapshot = this.read(location);\n this.touch(location);\n return snapshot\n }\n }\n\n put(location, snapshot) {\n this.write(location, snapshot);\n this.touch(location);\n return snapshot\n }\n\n clear() {\n this.snapshots = {};\n }\n\n // Private\n\n read(location) {\n return this.snapshots[toCacheKey(location)]\n }\n\n write(location, snapshot) {\n this.snapshots[toCacheKey(location)] = snapshot;\n }\n\n touch(location) {\n const key = toCacheKey(location);\n const index = this.keys.indexOf(key);\n if (index > -1) this.keys.splice(index, 1);\n this.keys.unshift(key);\n this.trim();\n }\n\n trim() {\n for (const key of this.keys.splice(this.size)) {\n delete this.snapshots[key];\n }\n }\n}\n\nclass PageView extends View {\n snapshotCache = new SnapshotCache(10)\n lastRenderedLocation = new URL(location.href)\n forceReloaded = false\n\n shouldTransitionTo(newSnapshot) {\n return this.snapshot.prefersViewTransitions && newSnapshot.prefersViewTransitions\n }\n\n renderPage(snapshot, isPreview = false, willRender = true, visit) {\n const shouldMorphPage = this.isPageRefresh(visit) && this.snapshot.shouldMorphPage;\n const rendererClass = shouldMorphPage ? MorphingPageRenderer : PageRenderer;\n\n const renderer = new rendererClass(this.snapshot, snapshot, isPreview, willRender);\n\n if (!renderer.shouldRender) {\n this.forceReloaded = true;\n } else {\n visit?.changeHistory();\n }\n\n return this.render(renderer)\n }\n\n renderError(snapshot, visit) {\n visit?.changeHistory();\n const renderer = new ErrorRenderer(this.snapshot, snapshot, false);\n return this.render(renderer)\n }\n\n clearSnapshotCache() {\n this.snapshotCache.clear();\n }\n\n async cacheSnapshot(snapshot = this.snapshot) {\n if (snapshot.isCacheable) {\n this.delegate.viewWillCacheSnapshot();\n const { lastRenderedLocation: location } = this;\n await nextEventLoopTick();\n const cachedSnapshot = snapshot.clone();\n this.snapshotCache.put(location, cachedSnapshot);\n return cachedSnapshot\n }\n }\n\n getCachedSnapshotForLocation(location) {\n return this.snapshotCache.get(location)\n }\n\n isPageRefresh(visit) {\n return !visit || (this.lastRenderedLocation.pathname === visit.location.pathname && visit.action === \"replace\")\n }\n\n shouldPreserveScrollPosition(visit) {\n return this.isPageRefresh(visit) && this.snapshot.shouldPreserveScrollPosition\n }\n\n get snapshot() {\n return PageSnapshot.fromElement(this.element)\n }\n}\n\nclass Preloader {\n selector = \"a[data-turbo-preload]\"\n\n constructor(delegate, snapshotCache) {\n this.delegate = delegate;\n this.snapshotCache = snapshotCache;\n }\n\n start() {\n if (document.readyState === \"loading\") {\n document.addEventListener(\"DOMContentLoaded\", this.#preloadAll);\n } else {\n this.preloadOnLoadLinksForView(document.body);\n }\n }\n\n stop() {\n document.removeEventListener(\"DOMContentLoaded\", this.#preloadAll);\n }\n\n preloadOnLoadLinksForView(element) {\n for (const link of element.querySelectorAll(this.selector)) {\n if (this.delegate.shouldPreloadLink(link)) {\n this.preloadURL(link);\n }\n }\n }\n\n async preloadURL(link) {\n const location = new URL(link.href);\n\n if (this.snapshotCache.has(location)) {\n return\n }\n\n const fetchRequest = new FetchRequest(this, FetchMethod.get, location, new URLSearchParams(), link);\n await fetchRequest.perform();\n }\n\n // Fetch request delegate\n\n prepareRequest(fetchRequest) {\n fetchRequest.headers[\"X-Sec-Purpose\"] = \"prefetch\";\n }\n\n async requestSucceededWithResponse(fetchRequest, fetchResponse) {\n try {\n const responseHTML = await fetchResponse.responseHTML;\n const snapshot = PageSnapshot.fromHTMLString(responseHTML);\n\n this.snapshotCache.put(fetchRequest.url, snapshot);\n } catch (_) {\n // If we cannot preload that is ok!\n }\n }\n\n requestStarted(fetchRequest) {}\n\n requestErrored(fetchRequest) {}\n\n requestFinished(fetchRequest) {}\n\n requestPreventedHandlingResponse(fetchRequest, fetchResponse) {}\n\n requestFailedWithResponse(fetchRequest, fetchResponse) {}\n\n #preloadAll = () => {\n this.preloadOnLoadLinksForView(document.body);\n }\n}\n\nclass Cache {\n constructor(session) {\n this.session = session;\n }\n\n clear() {\n this.session.clearCache();\n }\n\n resetCacheControl() {\n this.#setCacheControl(\"\");\n }\n\n exemptPageFromCache() {\n this.#setCacheControl(\"no-cache\");\n }\n\n exemptPageFromPreview() {\n this.#setCacheControl(\"no-preview\");\n }\n\n #setCacheControl(value) {\n setMetaContent(\"turbo-cache-control\", value);\n }\n}\n\nclass Session {\n navigator = new Navigator(this)\n history = new History(this)\n view = new PageView(this, document.documentElement)\n adapter = new BrowserAdapter(this)\n\n pageObserver = new PageObserver(this)\n cacheObserver = new CacheObserver()\n linkPrefetchObserver = new LinkPrefetchObserver(this, document)\n linkClickObserver = new LinkClickObserver(this, window)\n formSubmitObserver = new FormSubmitObserver(this, document)\n scrollObserver = new ScrollObserver(this)\n streamObserver = new StreamObserver(this)\n formLinkClickObserver = new FormLinkClickObserver(this, document.documentElement)\n frameRedirector = new FrameRedirector(this, document.documentElement)\n streamMessageRenderer = new StreamMessageRenderer()\n cache = new Cache(this)\n\n enabled = true\n started = false\n #pageRefreshDebouncePeriod = 150\n\n constructor(recentRequests) {\n this.recentRequests = recentRequests;\n this.preloader = new Preloader(this, this.view.snapshotCache);\n this.debouncedRefresh = this.refresh;\n this.pageRefreshDebouncePeriod = this.pageRefreshDebouncePeriod;\n }\n\n start() {\n if (!this.started) {\n this.pageObserver.start();\n this.cacheObserver.start();\n this.linkPrefetchObserver.start();\n this.formLinkClickObserver.start();\n this.linkClickObserver.start();\n this.formSubmitObserver.start();\n this.scrollObserver.start();\n this.streamObserver.start();\n this.frameRedirector.start();\n this.history.start();\n this.preloader.start();\n this.started = true;\n this.enabled = true;\n }\n }\n\n disable() {\n this.enabled = false;\n }\n\n stop() {\n if (this.started) {\n this.pageObserver.stop();\n this.cacheObserver.stop();\n this.linkPrefetchObserver.stop();\n this.formLinkClickObserver.stop();\n this.linkClickObserver.stop();\n this.formSubmitObserver.stop();\n this.scrollObserver.stop();\n this.streamObserver.stop();\n this.frameRedirector.stop();\n this.history.stop();\n this.preloader.stop();\n this.started = false;\n }\n }\n\n registerAdapter(adapter) {\n this.adapter = adapter;\n }\n\n visit(location, options = {}) {\n const frameElement = options.frame ? document.getElementById(options.frame) : null;\n\n if (frameElement instanceof FrameElement) {\n const action = options.action || getVisitAction(frameElement);\n\n frameElement.delegate.proposeVisitIfNavigatedWithAction(frameElement, action);\n frameElement.src = location.toString();\n } else {\n this.navigator.proposeVisit(expandURL(location), options);\n }\n }\n\n refresh(url, requestId) {\n const isRecentRequest = requestId && this.recentRequests.has(requestId);\n if (!isRecentRequest && !this.navigator.currentVisit) {\n this.visit(url, { action: \"replace\", shouldCacheSnapshot: false });\n }\n }\n\n connectStreamSource(source) {\n this.streamObserver.connectStreamSource(source);\n }\n\n disconnectStreamSource(source) {\n this.streamObserver.disconnectStreamSource(source);\n }\n\n renderStreamMessage(message) {\n this.streamMessageRenderer.render(StreamMessage.wrap(message));\n }\n\n clearCache() {\n this.view.clearSnapshotCache();\n }\n\n setProgressBarDelay(delay) {\n console.warn(\n \"Please replace `session.setProgressBarDelay(delay)` with `session.progressBarDelay = delay`. The function is deprecated and will be removed in a future version of Turbo.`\"\n );\n\n this.progressBarDelay = delay;\n }\n\n set progressBarDelay(delay) {\n config.drive.progressBarDelay = delay;\n }\n\n get progressBarDelay() {\n return config.drive.progressBarDelay\n }\n\n set drive(value) {\n config.drive.enabled = value;\n }\n\n get drive() {\n return config.drive.enabled\n }\n\n set formMode(value) {\n config.forms.mode = value;\n }\n\n get formMode() {\n return config.forms.mode\n }\n\n get location() {\n return this.history.location\n }\n\n get restorationIdentifier() {\n return this.history.restorationIdentifier\n }\n\n get pageRefreshDebouncePeriod() {\n return this.#pageRefreshDebouncePeriod\n }\n\n set pageRefreshDebouncePeriod(value) {\n this.refresh = debounce(this.debouncedRefresh.bind(this), value);\n this.#pageRefreshDebouncePeriod = value;\n }\n\n // Preloader delegate\n\n shouldPreloadLink(element) {\n const isUnsafe = element.hasAttribute(\"data-turbo-method\");\n const isStream = element.hasAttribute(\"data-turbo-stream\");\n const frameTarget = element.getAttribute(\"data-turbo-frame\");\n const frame = frameTarget == \"_top\" ?\n null :\n document.getElementById(frameTarget) || findClosestRecursively(element, \"turbo-frame:not([disabled])\");\n\n if (isUnsafe || isStream || frame instanceof FrameElement) {\n return false\n } else {\n const location = new URL(element.href);\n\n return this.elementIsNavigatable(element) && locationIsVisitable(location, this.snapshot.rootLocation)\n }\n }\n\n // History delegate\n\n historyPoppedToLocationWithRestorationIdentifierAndDirection(location, restorationIdentifier, direction) {\n if (this.enabled) {\n this.navigator.startVisit(location, restorationIdentifier, {\n action: \"restore\",\n historyChanged: true,\n direction\n });\n } else {\n this.adapter.pageInvalidated({\n reason: \"turbo_disabled\"\n });\n }\n }\n\n // Scroll observer delegate\n\n scrollPositionChanged(position) {\n this.history.updateRestorationData({ scrollPosition: position });\n }\n\n // Form click observer delegate\n\n willSubmitFormLinkToLocation(link, location) {\n return this.elementIsNavigatable(link) && locationIsVisitable(location, this.snapshot.rootLocation)\n }\n\n submittedFormLinkToLocation() {}\n\n // Link hover observer delegate\n\n canPrefetchRequestToLocation(link, location) {\n return (\n this.elementIsNavigatable(link) &&\n locationIsVisitable(location, this.snapshot.rootLocation)\n )\n }\n\n // Link click observer delegate\n\n willFollowLinkToLocation(link, location, event) {\n return (\n this.elementIsNavigatable(link) &&\n locationIsVisitable(location, this.snapshot.rootLocation) &&\n this.applicationAllowsFollowingLinkToLocation(link, location, event)\n )\n }\n\n followedLinkToLocation(link, location) {\n const action = this.getActionForLink(link);\n const acceptsStreamResponse = link.hasAttribute(\"data-turbo-stream\");\n\n this.visit(location.href, { action, acceptsStreamResponse });\n }\n\n // Navigator delegate\n\n allowsVisitingLocationWithAction(location, action) {\n return this.locationWithActionIsSamePage(location, action) || this.applicationAllowsVisitingLocation(location)\n }\n\n visitProposedToLocation(location, options) {\n extendURLWithDeprecatedProperties(location);\n this.adapter.visitProposedToLocation(location, options);\n }\n\n // Visit delegate\n\n visitStarted(visit) {\n if (!visit.acceptsStreamResponse) {\n markAsBusy(document.documentElement);\n this.view.markVisitDirection(visit.direction);\n }\n extendURLWithDeprecatedProperties(visit.location);\n if (!visit.silent) {\n this.notifyApplicationAfterVisitingLocation(visit.location, visit.action);\n }\n }\n\n visitCompleted(visit) {\n this.view.unmarkVisitDirection();\n clearBusyState(document.documentElement);\n this.notifyApplicationAfterPageLoad(visit.getTimingMetrics());\n }\n\n locationWithActionIsSamePage(location, action) {\n return this.navigator.locationWithActionIsSamePage(location, action)\n }\n\n visitScrolledToSamePageLocation(oldURL, newURL) {\n this.notifyApplicationAfterVisitingSamePageLocation(oldURL, newURL);\n }\n\n // Form submit observer delegate\n\n willSubmitForm(form, submitter) {\n const action = getAction$1(form, submitter);\n\n return (\n this.submissionIsNavigatable(form, submitter) &&\n locationIsVisitable(expandURL(action), this.snapshot.rootLocation)\n )\n }\n\n formSubmitted(form, submitter) {\n this.navigator.submitForm(form, submitter);\n }\n\n // Page observer delegate\n\n pageBecameInteractive() {\n this.view.lastRenderedLocation = this.location;\n this.notifyApplicationAfterPageLoad();\n }\n\n pageLoaded() {\n this.history.assumeControlOfScrollRestoration();\n }\n\n pageWillUnload() {\n this.history.relinquishControlOfScrollRestoration();\n }\n\n // Stream observer delegate\n\n receivedMessageFromStream(message) {\n this.renderStreamMessage(message);\n }\n\n // Page view delegate\n\n viewWillCacheSnapshot() {\n if (!this.navigator.currentVisit?.silent) {\n this.notifyApplicationBeforeCachingSnapshot();\n }\n }\n\n allowsImmediateRender({ element }, options) {\n const event = this.notifyApplicationBeforeRender(element, options);\n const {\n defaultPrevented,\n detail: { render }\n } = event;\n\n if (this.view.renderer && render) {\n this.view.renderer.renderElement = render;\n }\n\n return !defaultPrevented\n }\n\n viewRenderedSnapshot(_snapshot, _isPreview, renderMethod) {\n this.view.lastRenderedLocation = this.history.location;\n this.notifyApplicationAfterRender(renderMethod);\n }\n\n preloadOnLoadLinksForView(element) {\n this.preloader.preloadOnLoadLinksForView(element);\n }\n\n viewInvalidated(reason) {\n this.adapter.pageInvalidated(reason);\n }\n\n // Frame element\n\n frameLoaded(frame) {\n this.notifyApplicationAfterFrameLoad(frame);\n }\n\n frameRendered(fetchResponse, frame) {\n this.notifyApplicationAfterFrameRender(fetchResponse, frame);\n }\n\n // Application events\n\n applicationAllowsFollowingLinkToLocation(link, location, ev) {\n const event = this.notifyApplicationAfterClickingLinkToLocation(link, location, ev);\n return !event.defaultPrevented\n }\n\n applicationAllowsVisitingLocation(location) {\n const event = this.notifyApplicationBeforeVisitingLocation(location);\n return !event.defaultPrevented\n }\n\n notifyApplicationAfterClickingLinkToLocation(link, location, event) {\n return dispatch(\"turbo:click\", {\n target: link,\n detail: { url: location.href, originalEvent: event },\n cancelable: true\n })\n }\n\n notifyApplicationBeforeVisitingLocation(location) {\n return dispatch(\"turbo:before-visit\", {\n detail: { url: location.href },\n cancelable: true\n })\n }\n\n notifyApplicationAfterVisitingLocation(location, action) {\n return dispatch(\"turbo:visit\", { detail: { url: location.href, action } })\n }\n\n notifyApplicationBeforeCachingSnapshot() {\n return dispatch(\"turbo:before-cache\")\n }\n\n notifyApplicationBeforeRender(newBody, options) {\n return dispatch(\"turbo:before-render\", {\n detail: { newBody, ...options },\n cancelable: true\n })\n }\n\n notifyApplicationAfterRender(renderMethod) {\n return dispatch(\"turbo:render\", { detail: { renderMethod } })\n }\n\n notifyApplicationAfterPageLoad(timing = {}) {\n return dispatch(\"turbo:load\", {\n detail: { url: this.location.href, timing }\n })\n }\n\n notifyApplicationAfterVisitingSamePageLocation(oldURL, newURL) {\n dispatchEvent(\n new HashChangeEvent(\"hashchange\", {\n oldURL: oldURL.toString(),\n newURL: newURL.toString()\n })\n );\n }\n\n notifyApplicationAfterFrameLoad(frame) {\n return dispatch(\"turbo:frame-load\", { target: frame })\n }\n\n notifyApplicationAfterFrameRender(fetchResponse, frame) {\n return dispatch(\"turbo:frame-render\", {\n detail: { fetchResponse },\n target: frame,\n cancelable: true\n })\n }\n\n // Helpers\n\n submissionIsNavigatable(form, submitter) {\n if (config.forms.mode == \"off\") {\n return false\n } else {\n const submitterIsNavigatable = submitter ? this.elementIsNavigatable(submitter) : true;\n\n if (config.forms.mode == \"optin\") {\n return submitterIsNavigatable && form.closest('[data-turbo=\"true\"]') != null\n } else {\n return submitterIsNavigatable && this.elementIsNavigatable(form)\n }\n }\n }\n\n elementIsNavigatable(element) {\n const container = findClosestRecursively(element, \"[data-turbo]\");\n const withinFrame = findClosestRecursively(element, \"turbo-frame\");\n\n // Check if Drive is enabled on the session or we're within a Frame.\n if (config.drive.enabled || withinFrame) {\n // Element is navigatable by default, unless `data-turbo=\"false\"`.\n if (container) {\n return container.getAttribute(\"data-turbo\") != \"false\"\n } else {\n return true\n }\n } else {\n // Element isn't navigatable by default, unless `data-turbo=\"true\"`.\n if (container) {\n return container.getAttribute(\"data-turbo\") == \"true\"\n } else {\n return false\n }\n }\n }\n\n // Private\n\n getActionForLink(link) {\n return getVisitAction(link) || \"advance\"\n }\n\n get snapshot() {\n return this.view.snapshot\n }\n}\n\n// Older versions of the Turbo Native adapters referenced the\n// `Location#absoluteURL` property in their implementations of\n// the `Adapter#visitProposedToLocation()` and `#visitStarted()`\n// methods. The Location class has since been removed in favor\n// of the DOM URL API, and accordingly all Adapter methods now\n// receive URL objects.\n//\n// We alias #absoluteURL to #toString() here to avoid crashing\n// older adapters which do not expect URL objects. We should\n// consider removing this support at some point in the future.\n\nfunction extendURLWithDeprecatedProperties(url) {\n Object.defineProperties(url, deprecatedLocationPropertyDescriptors);\n}\n\nconst deprecatedLocationPropertyDescriptors = {\n absoluteURL: {\n get() {\n return this.toString()\n }\n }\n};\n\nconst session = new Session(recentRequests);\nconst { cache, navigator: navigator$1 } = session;\n\n/**\n * Starts the main session.\n * This initialises any necessary observers such as those to monitor\n * link interactions.\n */\nfunction start() {\n session.start();\n}\n\n/**\n * Registers an adapter for the main session.\n *\n * @param adapter Adapter to register\n */\nfunction registerAdapter(adapter) {\n session.registerAdapter(adapter);\n}\n\n/**\n * Performs an application visit to the given location.\n *\n * @param location Location to visit (a URL or path)\n * @param options Options to apply\n * @param options.action Type of history navigation to apply (\"restore\",\n * \"replace\" or \"advance\")\n * @param options.historyChanged Specifies whether the browser history has\n * already been changed for this visit or not\n * @param options.referrer Specifies the referrer of this visit such that\n * navigations to the same page will not result in a new history entry.\n * @param options.snapshotHTML Cached snapshot to render\n * @param options.response Response of the specified location\n */\nfunction visit(location, options) {\n session.visit(location, options);\n}\n\n/**\n * Connects a stream source to the main session.\n *\n * @param source Stream source to connect\n */\nfunction connectStreamSource(source) {\n session.connectStreamSource(source);\n}\n\n/**\n * Disconnects a stream source from the main session.\n *\n * @param source Stream source to disconnect\n */\nfunction disconnectStreamSource(source) {\n session.disconnectStreamSource(source);\n}\n\n/**\n * Renders a stream message to the main session by appending it to the\n * current document.\n *\n * @param message Message to render\n */\nfunction renderStreamMessage(message) {\n session.renderStreamMessage(message);\n}\n\n/**\n * Removes all entries from the Turbo Drive page cache.\n * Call this when state has changed on the server that may affect cached pages.\n *\n * @deprecated since version 7.2.0 in favor of `Turbo.cache.clear()`\n */\nfunction clearCache() {\n console.warn(\n \"Please replace `Turbo.clearCache()` with `Turbo.cache.clear()`. The top-level function is deprecated and will be removed in a future version of Turbo.`\"\n );\n session.clearCache();\n}\n\n/**\n * Sets the delay after which the progress bar will appear during navigation.\n *\n * The progress bar appears after 500ms by default.\n *\n * Note that this method has no effect when used with the iOS or Android\n * adapters.\n *\n * @param delay Time to delay in milliseconds\n */\nfunction setProgressBarDelay(delay) {\n console.warn(\n \"Please replace `Turbo.setProgressBarDelay(delay)` with `Turbo.config.drive.progressBarDelay = delay`. The top-level function is deprecated and will be removed in a future version of Turbo.`\"\n );\n config.drive.progressBarDelay = delay;\n}\n\nfunction setConfirmMethod(confirmMethod) {\n console.warn(\n \"Please replace `Turbo.setConfirmMethod(confirmMethod)` with `Turbo.config.forms.confirm = confirmMethod`. The top-level function is deprecated and will be removed in a future version of Turbo.`\"\n );\n config.forms.confirm = confirmMethod;\n}\n\nfunction setFormMode(mode) {\n console.warn(\n \"Please replace `Turbo.setFormMode(mode)` with `Turbo.config.forms.mode = mode`. The top-level function is deprecated and will be removed in a future version of Turbo.`\"\n );\n config.forms.mode = mode;\n}\n\nvar Turbo = /*#__PURE__*/Object.freeze({\n __proto__: null,\n navigator: navigator$1,\n session: session,\n cache: cache,\n PageRenderer: PageRenderer,\n PageSnapshot: PageSnapshot,\n FrameRenderer: FrameRenderer,\n fetch: fetchWithTurboHeaders,\n config: config,\n start: start,\n registerAdapter: registerAdapter,\n visit: visit,\n connectStreamSource: connectStreamSource,\n disconnectStreamSource: disconnectStreamSource,\n renderStreamMessage: renderStreamMessage,\n clearCache: clearCache,\n setProgressBarDelay: setProgressBarDelay,\n setConfirmMethod: setConfirmMethod,\n setFormMode: setFormMode\n});\n\nclass TurboFrameMissingError extends Error {}\n\nclass FrameController {\n fetchResponseLoaded = (_fetchResponse) => Promise.resolve()\n #currentFetchRequest = null\n #resolveVisitPromise = () => {}\n #connected = false\n #hasBeenLoaded = false\n #ignoredAttributes = new Set()\n #shouldMorphFrame = false\n action = null\n\n constructor(element) {\n this.element = element;\n this.view = new FrameView(this, this.element);\n this.appearanceObserver = new AppearanceObserver(this, this.element);\n this.formLinkClickObserver = new FormLinkClickObserver(this, this.element);\n this.linkInterceptor = new LinkInterceptor(this, this.element);\n this.restorationIdentifier = uuid();\n this.formSubmitObserver = new FormSubmitObserver(this, this.element);\n }\n\n // Frame delegate\n\n connect() {\n if (!this.#connected) {\n this.#connected = true;\n if (this.loadingStyle == FrameLoadingStyle.lazy) {\n this.appearanceObserver.start();\n } else {\n this.#loadSourceURL();\n }\n this.formLinkClickObserver.start();\n this.linkInterceptor.start();\n this.formSubmitObserver.start();\n }\n }\n\n disconnect() {\n if (this.#connected) {\n this.#connected = false;\n this.appearanceObserver.stop();\n this.formLinkClickObserver.stop();\n this.linkInterceptor.stop();\n this.formSubmitObserver.stop();\n }\n }\n\n disabledChanged() {\n if (this.loadingStyle == FrameLoadingStyle.eager) {\n this.#loadSourceURL();\n }\n }\n\n sourceURLChanged() {\n if (this.#isIgnoringChangesTo(\"src\")) return\n\n if (this.element.isConnected) {\n this.complete = false;\n }\n\n if (this.loadingStyle == FrameLoadingStyle.eager || this.#hasBeenLoaded) {\n this.#loadSourceURL();\n }\n }\n\n sourceURLReloaded() {\n const { refresh, src } = this.element;\n\n this.#shouldMorphFrame = src && refresh === \"morph\";\n\n this.element.removeAttribute(\"complete\");\n this.element.src = null;\n this.element.src = src;\n return this.element.loaded\n }\n\n loadingStyleChanged() {\n if (this.loadingStyle == FrameLoadingStyle.lazy) {\n this.appearanceObserver.start();\n } else {\n this.appearanceObserver.stop();\n this.#loadSourceURL();\n }\n }\n\n async #loadSourceURL() {\n if (this.enabled && this.isActive && !this.complete && this.sourceURL) {\n this.element.loaded = this.#visit(expandURL(this.sourceURL));\n this.appearanceObserver.stop();\n await this.element.loaded;\n this.#hasBeenLoaded = true;\n }\n }\n\n async loadResponse(fetchResponse) {\n if (fetchResponse.redirected || (fetchResponse.succeeded && fetchResponse.isHTML)) {\n this.sourceURL = fetchResponse.response.url;\n }\n\n try {\n const html = await fetchResponse.responseHTML;\n if (html) {\n const document = parseHTMLDocument(html);\n const pageSnapshot = PageSnapshot.fromDocument(document);\n\n if (pageSnapshot.isVisitable) {\n await this.#loadFrameResponse(fetchResponse, document);\n } else {\n await this.#handleUnvisitableFrameResponse(fetchResponse);\n }\n }\n } finally {\n this.#shouldMorphFrame = false;\n this.fetchResponseLoaded = () => Promise.resolve();\n }\n }\n\n // Appearance observer delegate\n\n elementAppearedInViewport(element) {\n this.proposeVisitIfNavigatedWithAction(element, getVisitAction(element));\n this.#loadSourceURL();\n }\n\n // Form link click observer delegate\n\n willSubmitFormLinkToLocation(link) {\n return this.#shouldInterceptNavigation(link)\n }\n\n submittedFormLinkToLocation(link, _location, form) {\n const frame = this.#findFrameElement(link);\n if (frame) form.setAttribute(\"data-turbo-frame\", frame.id);\n }\n\n // Link interceptor delegate\n\n shouldInterceptLinkClick(element, _location, _event) {\n return this.#shouldInterceptNavigation(element)\n }\n\n linkClickIntercepted(element, location) {\n this.#navigateFrame(element, location);\n }\n\n // Form submit observer delegate\n\n willSubmitForm(element, submitter) {\n return element.closest(\"turbo-frame\") == this.element && this.#shouldInterceptNavigation(element, submitter)\n }\n\n formSubmitted(element, submitter) {\n if (this.formSubmission) {\n this.formSubmission.stop();\n }\n\n this.formSubmission = new FormSubmission(this, element, submitter);\n const { fetchRequest } = this.formSubmission;\n this.prepareRequest(fetchRequest);\n this.formSubmission.start();\n }\n\n // Fetch request delegate\n\n prepareRequest(request) {\n request.headers[\"Turbo-Frame\"] = this.id;\n\n if (this.currentNavigationElement?.hasAttribute(\"data-turbo-stream\")) {\n request.acceptResponseType(StreamMessage.contentType);\n }\n }\n\n requestStarted(_request) {\n markAsBusy(this.element);\n }\n\n requestPreventedHandlingResponse(_request, _response) {\n this.#resolveVisitPromise();\n }\n\n async requestSucceededWithResponse(request, response) {\n await this.loadResponse(response);\n this.#resolveVisitPromise();\n }\n\n async requestFailedWithResponse(request, response) {\n await this.loadResponse(response);\n this.#resolveVisitPromise();\n }\n\n requestErrored(request, error) {\n console.error(error);\n this.#resolveVisitPromise();\n }\n\n requestFinished(_request) {\n clearBusyState(this.element);\n }\n\n // Form submission delegate\n\n formSubmissionStarted({ formElement }) {\n markAsBusy(formElement, this.#findFrameElement(formElement));\n }\n\n formSubmissionSucceededWithResponse(formSubmission, response) {\n const frame = this.#findFrameElement(formSubmission.formElement, formSubmission.submitter);\n\n frame.delegate.proposeVisitIfNavigatedWithAction(frame, getVisitAction(formSubmission.submitter, formSubmission.formElement, frame));\n frame.delegate.loadResponse(response);\n\n if (!formSubmission.isSafe) {\n session.clearCache();\n }\n }\n\n formSubmissionFailedWithResponse(formSubmission, fetchResponse) {\n this.element.delegate.loadResponse(fetchResponse);\n session.clearCache();\n }\n\n formSubmissionErrored(formSubmission, error) {\n console.error(error);\n }\n\n formSubmissionFinished({ formElement }) {\n clearBusyState(formElement, this.#findFrameElement(formElement));\n }\n\n // View delegate\n\n allowsImmediateRender({ element: newFrame }, options) {\n const event = dispatch(\"turbo:before-frame-render\", {\n target: this.element,\n detail: { newFrame, ...options },\n cancelable: true\n });\n\n const {\n defaultPrevented,\n detail: { render }\n } = event;\n\n if (this.view.renderer && render) {\n this.view.renderer.renderElement = render;\n }\n\n return !defaultPrevented\n }\n\n viewRenderedSnapshot(_snapshot, _isPreview, _renderMethod) {}\n\n preloadOnLoadLinksForView(element) {\n session.preloadOnLoadLinksForView(element);\n }\n\n viewInvalidated() {}\n\n // Frame renderer delegate\n\n willRenderFrame(currentElement, _newElement) {\n this.previousFrameElement = currentElement.cloneNode(true);\n }\n\n visitCachedSnapshot = ({ element }) => {\n const frame = element.querySelector(\"#\" + this.element.id);\n\n if (frame && this.previousFrameElement) {\n frame.replaceChildren(...this.previousFrameElement.children);\n }\n\n delete this.previousFrameElement;\n }\n\n // Private\n\n async #loadFrameResponse(fetchResponse, document) {\n const newFrameElement = await this.extractForeignFrameElement(document.body);\n const rendererClass = this.#shouldMorphFrame ? MorphingFrameRenderer : FrameRenderer;\n\n if (newFrameElement) {\n const snapshot = new Snapshot(newFrameElement);\n const renderer = new rendererClass(this, this.view.snapshot, snapshot, false, false);\n if (this.view.renderPromise) await this.view.renderPromise;\n this.changeHistory();\n\n await this.view.render(renderer);\n this.complete = true;\n session.frameRendered(fetchResponse, this.element);\n session.frameLoaded(this.element);\n await this.fetchResponseLoaded(fetchResponse);\n } else if (this.#willHandleFrameMissingFromResponse(fetchResponse)) {\n this.#handleFrameMissingFromResponse(fetchResponse);\n }\n }\n\n async #visit(url) {\n const request = new FetchRequest(this, FetchMethod.get, url, new URLSearchParams(), this.element);\n\n this.#currentFetchRequest?.cancel();\n this.#currentFetchRequest = request;\n\n return new Promise((resolve) => {\n this.#resolveVisitPromise = () => {\n this.#resolveVisitPromise = () => {};\n this.#currentFetchRequest = null;\n resolve();\n };\n request.perform();\n })\n }\n\n #navigateFrame(element, url, submitter) {\n const frame = this.#findFrameElement(element, submitter);\n\n frame.delegate.proposeVisitIfNavigatedWithAction(frame, getVisitAction(submitter, element, frame));\n\n this.#withCurrentNavigationElement(element, () => {\n frame.src = url;\n });\n }\n\n proposeVisitIfNavigatedWithAction(frame, action = null) {\n this.action = action;\n\n if (this.action) {\n const pageSnapshot = PageSnapshot.fromElement(frame).clone();\n const { visitCachedSnapshot } = frame.delegate;\n\n frame.delegate.fetchResponseLoaded = async (fetchResponse) => {\n if (frame.src) {\n const { statusCode, redirected } = fetchResponse;\n const responseHTML = await fetchResponse.responseHTML;\n const response = { statusCode, redirected, responseHTML };\n const options = {\n response,\n visitCachedSnapshot,\n willRender: false,\n updateHistory: false,\n restorationIdentifier: this.restorationIdentifier,\n snapshot: pageSnapshot\n };\n\n if (this.action) options.action = this.action;\n\n session.visit(frame.src, options);\n }\n };\n }\n }\n\n changeHistory() {\n if (this.action) {\n const method = getHistoryMethodForAction(this.action);\n session.history.update(method, expandURL(this.element.src || \"\"), this.restorationIdentifier);\n }\n }\n\n async #handleUnvisitableFrameResponse(fetchResponse) {\n console.warn(\n `The response (${fetchResponse.statusCode}) from is performing a full page visit due to turbo-visit-control.`\n );\n\n await this.#visitResponse(fetchResponse.response);\n }\n\n #willHandleFrameMissingFromResponse(fetchResponse) {\n this.element.setAttribute(\"complete\", \"\");\n\n const response = fetchResponse.response;\n const visit = async (url, options) => {\n if (url instanceof Response) {\n this.#visitResponse(url);\n } else {\n session.visit(url, options);\n }\n };\n\n const event = dispatch(\"turbo:frame-missing\", {\n target: this.element,\n detail: { response, visit },\n cancelable: true\n });\n\n return !event.defaultPrevented\n }\n\n #handleFrameMissingFromResponse(fetchResponse) {\n this.view.missing();\n this.#throwFrameMissingError(fetchResponse);\n }\n\n #throwFrameMissingError(fetchResponse) {\n const message = `The response (${fetchResponse.statusCode}) did not contain the expected and will be ignored. To perform a full page visit instead, set turbo-visit-control to reload.`;\n throw new TurboFrameMissingError(message)\n }\n\n async #visitResponse(response) {\n const wrapped = new FetchResponse(response);\n const responseHTML = await wrapped.responseHTML;\n const { location, redirected, statusCode } = wrapped;\n\n return session.visit(location, { response: { redirected, statusCode, responseHTML } })\n }\n\n #findFrameElement(element, submitter) {\n const id = getAttribute(\"data-turbo-frame\", submitter, element) || this.element.getAttribute(\"target\");\n return getFrameElementById(id) ?? this.element\n }\n\n async extractForeignFrameElement(container) {\n let element;\n const id = CSS.escape(this.id);\n\n try {\n element = activateElement(container.querySelector(`turbo-frame#${id}`), this.sourceURL);\n if (element) {\n return element\n }\n\n element = activateElement(container.querySelector(`turbo-frame[src][recurse~=${id}]`), this.sourceURL);\n if (element) {\n await element.loaded;\n return await this.extractForeignFrameElement(element)\n }\n } catch (error) {\n console.error(error);\n return new FrameElement()\n }\n\n return null\n }\n\n #formActionIsVisitable(form, submitter) {\n const action = getAction$1(form, submitter);\n\n return locationIsVisitable(expandURL(action), this.rootLocation)\n }\n\n #shouldInterceptNavigation(element, submitter) {\n const id = getAttribute(\"data-turbo-frame\", submitter, element) || this.element.getAttribute(\"target\");\n\n if (element instanceof HTMLFormElement && !this.#formActionIsVisitable(element, submitter)) {\n return false\n }\n\n if (!this.enabled || id == \"_top\") {\n return false\n }\n\n if (id) {\n const frameElement = getFrameElementById(id);\n if (frameElement) {\n return !frameElement.disabled\n }\n }\n\n if (!session.elementIsNavigatable(element)) {\n return false\n }\n\n if (submitter && !session.elementIsNavigatable(submitter)) {\n return false\n }\n\n return true\n }\n\n // Computed properties\n\n get id() {\n return this.element.id\n }\n\n get enabled() {\n return !this.element.disabled\n }\n\n get sourceURL() {\n if (this.element.src) {\n return this.element.src\n }\n }\n\n set sourceURL(sourceURL) {\n this.#ignoringChangesToAttribute(\"src\", () => {\n this.element.src = sourceURL ?? null;\n });\n }\n\n get loadingStyle() {\n return this.element.loading\n }\n\n get isLoading() {\n return this.formSubmission !== undefined || this.#resolveVisitPromise() !== undefined\n }\n\n get complete() {\n return this.element.hasAttribute(\"complete\")\n }\n\n set complete(value) {\n if (value) {\n this.element.setAttribute(\"complete\", \"\");\n } else {\n this.element.removeAttribute(\"complete\");\n }\n }\n\n get isActive() {\n return this.element.isActive && this.#connected\n }\n\n get rootLocation() {\n const meta = this.element.ownerDocument.querySelector(`meta[name=\"turbo-root\"]`);\n const root = meta?.content ?? \"/\";\n return expandURL(root)\n }\n\n #isIgnoringChangesTo(attributeName) {\n return this.#ignoredAttributes.has(attributeName)\n }\n\n #ignoringChangesToAttribute(attributeName, callback) {\n this.#ignoredAttributes.add(attributeName);\n callback();\n this.#ignoredAttributes.delete(attributeName);\n }\n\n #withCurrentNavigationElement(element, callback) {\n this.currentNavigationElement = element;\n callback();\n delete this.currentNavigationElement;\n }\n}\n\nfunction getFrameElementById(id) {\n if (id != null) {\n const element = document.getElementById(id);\n if (element instanceof FrameElement) {\n return element\n }\n }\n}\n\nfunction activateElement(element, currentURL) {\n if (element) {\n const src = element.getAttribute(\"src\");\n if (src != null && currentURL != null && urlsAreEqual(src, currentURL)) {\n throw new Error(`Matching element has a source URL which references itself`)\n }\n if (element.ownerDocument !== document) {\n element = document.importNode(element, true);\n }\n\n if (element instanceof FrameElement) {\n element.connectedCallback();\n element.disconnectedCallback();\n return element\n }\n }\n}\n\nconst StreamActions = {\n after() {\n this.targetElements.forEach((e) => e.parentElement?.insertBefore(this.templateContent, e.nextSibling));\n },\n\n append() {\n this.removeDuplicateTargetChildren();\n this.targetElements.forEach((e) => e.append(this.templateContent));\n },\n\n before() {\n this.targetElements.forEach((e) => e.parentElement?.insertBefore(this.templateContent, e));\n },\n\n prepend() {\n this.removeDuplicateTargetChildren();\n this.targetElements.forEach((e) => e.prepend(this.templateContent));\n },\n\n remove() {\n this.targetElements.forEach((e) => e.remove());\n },\n\n replace() {\n const method = this.getAttribute(\"method\");\n\n this.targetElements.forEach((targetElement) => {\n if (method === \"morph\") {\n morphElements(targetElement, this.templateContent);\n } else {\n targetElement.replaceWith(this.templateContent);\n }\n });\n },\n\n update() {\n const method = this.getAttribute(\"method\");\n\n this.targetElements.forEach((targetElement) => {\n if (method === \"morph\") {\n morphChildren(targetElement, this.templateContent);\n } else {\n targetElement.innerHTML = \"\";\n targetElement.append(this.templateContent);\n }\n });\n },\n\n refresh() {\n session.refresh(this.baseURI, this.requestId);\n }\n};\n\n//