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{"version":3,"file":"workbox-precaching.prod.js","sources":["../_version.mjs","../utils/precachePlugins.mjs","../utils/createCacheKey.mjs","../PrecacheController.mjs","../utils/cleanRedirect.mjs","../utils/getOrCreatePrecacheController.mjs","../utils/getCacheKeyForURL.mjs","../utils/generateURLVariations.mjs","../utils/removeIgnoredSearchParams.mjs","../addRoute.mjs","../utils/addFetchListener.mjs","../precache.mjs","../addPlugins.mjs","../cleanupOutdatedCaches.mjs","../utils/deleteOutdatedCaches.mjs","../getCacheKeyForURL.mjs","../precacheAndRoute.mjs"],"sourcesContent":["try{self['workbox:precaching:4.3.1']&&_()}catch(e){}// eslint-disable-line","/*\n Copyright 2019 Google LLC\n\n Use of this source code is governed by an MIT-style\n license that can be found in the LICENSE file or at\n https://opensource.org/licenses/MIT.\n*/\n\nimport '../_version.mjs';\n\n\nconst plugins = [];\n\nexport const precachePlugins = {\n /*\n * @return {Array}\n * @private\n */\n get() {\n return plugins;\n },\n\n /*\n * @param {Array} newPlugins\n * @private\n */\n add(newPlugins) {\n plugins.push(...newPlugins);\n },\n};\n","/*\n Copyright 2018 Google LLC\n\n Use of this source code is governed by an MIT-style\n license that can be found in the LICENSE file or at\n https://opensource.org/licenses/MIT.\n*/\n\nimport {WorkboxError} from 'workbox-core/_private/WorkboxError.mjs';\n\nimport '../_version.mjs';\n\n// Name of the search parameter used to store revision info.\nconst REVISION_SEARCH_PARAM = '__WB_REVISION__';\n\n/**\n * Converts a manifest entry into a versioned URL suitable for precaching.\n *\n * @param {Object} entry\n * @return {string} A URL with versioning info.\n *\n * @private\n * @memberof module:workbox-precaching\n */\nexport function createCacheKey(entry) {\n if (!entry) {\n throw new WorkboxError('add-to-cache-list-unexpected-type', {entry});\n }\n\n // If a precache manifest entry is a string, it's assumed to be a versioned\n // URL, like '/app.abcd1234.js'. Return as-is.\n if (typeof entry === 'string') {\n const urlObject = new URL(entry, location);\n return {\n cacheKey: urlObject.href,\n url: urlObject.href,\n };\n }\n\n const {revision, url} = entry;\n if (!url) {\n throw new WorkboxError('add-to-cache-list-unexpected-type', {entry});\n }\n\n // If there's just a URL and no revision, then it's also assumed to be a\n // versioned URL.\n if (!revision) {\n const urlObject = new URL(url, location);\n return {\n cacheKey: urlObject.href,\n url: urlObject.href,\n };\n }\n\n // Otherwise, construct a properly versioned URL using the custom Workbox\n // search parameter along with the revision info.\n const originalURL = new URL(url, location);\n const cacheKeyURL = new URL(url, location);\n cacheKeyURL.searchParams.set(REVISION_SEARCH_PARAM, revision);\n return {\n cacheKey: cacheKeyURL.href,\n url: originalURL.href,\n };\n}\n","/*\n Copyright 2018 Google LLC\n\n Use of this source code is governed by an MIT-style\n license that can be found in the LICENSE file or at\n https://opensource.org/licenses/MIT.\n*/\n\nimport {assert} from 'workbox-core/_private/assert.mjs';\nimport {cacheNames} from 'workbox-core/_private/cacheNames.mjs';\nimport {cacheWrapper} from 'workbox-core/_private/cacheWrapper.mjs';\nimport {fetchWrapper} from 'workbox-core/_private/fetchWrapper.mjs';\nimport {WorkboxError} from 'workbox-core/_private/WorkboxError.mjs';\n\nimport {cleanRedirect} from './utils/cleanRedirect.mjs';\nimport {createCacheKey} from './utils/createCacheKey.mjs';\nimport {printCleanupDetails} from './utils/printCleanupDetails.mjs';\nimport {printInstallDetails} from './utils/printInstallDetails.mjs';\n\nimport './_version.mjs';\n\n\n/**\n * Performs efficient precaching of assets.\n *\n * @memberof module:workbox-precaching\n */\nclass PrecacheController {\n /**\n * Create a new PrecacheController.\n *\n * @param {string} [cacheName] An optional name for the cache, to override\n * the default precache name.\n */\n constructor(cacheName) {\n this._cacheName = cacheNames.getPrecacheName(cacheName);\n this._urlsToCacheKeys = new Map();\n }\n\n /**\n * This method will add items to the precache list, removing duplicates\n * and ensuring the information is valid.\n *\n * @param {\n * Array<module:workbox-precaching.PrecacheController.PrecacheEntry|string>\n * } entries Array of entries to precache.\n */\n addToCacheList(entries) {\n if (process.env.NODE_ENV !== 'production') {\n assert.isArray(entries, {\n moduleName: 'workbox-precaching',\n className: 'PrecacheController',\n funcName: 'addToCacheList',\n paramName: 'entries',\n });\n }\n\n for (const entry of entries) {\n const {cacheKey, url} = createCacheKey(entry);\n if (this._urlsToCacheKeys.has(url) &&\n this._urlsToCacheKeys.get(url) !== cacheKey) {\n throw new WorkboxError('add-to-cache-list-conflicting-entries', {\n firstEntry: this._urlsToCacheKeys.get(url),\n secondEntry: cacheKey,\n });\n }\n this._urlsToCacheKeys.set(url, cacheKey);\n }\n }\n\n /**\n * Precaches new and updated assets. Call this method from the service worker\n * install event.\n *\n * @param {Object} options\n * @param {Event} [options.event] The install event (if needed).\n * @param {Array<Object>} [options.plugins] Plugins to be used for fetching\n * and caching during install.\n * @return {Promise<workbox.precaching.InstallResult>}\n */\n async install({event, plugins} = {}) {\n if (process.env.NODE_ENV !== 'production') {\n if (plugins) {\n assert.isArray(plugins, {\n moduleName: 'workbox-precaching',\n className: 'PrecacheController',\n funcName: 'install',\n paramName: 'plugins',\n });\n }\n }\n\n const urlsToPrecache = [];\n const urlsAlreadyPrecached = [];\n\n const cache = await caches.open(this._cacheName);\n const alreadyCachedRequests = await cache.keys();\n const alreadyCachedURLs = new Set(alreadyCachedRequests.map(\n (request) => request.url));\n\n for (const cacheKey of this._urlsToCacheKeys.values()) {\n if (alreadyCachedURLs.has(cacheKey)) {\n urlsAlreadyPrecached.push(cacheKey);\n } else {\n urlsToPrecache.push(cacheKey);\n }\n }\n\n const precacheRequests = urlsToPrecache.map((url) => {\n return this._addURLToCache({event, plugins, url});\n });\n await Promise.all(precacheRequests);\n\n if (process.env.NODE_ENV !== 'production') {\n printInstallDetails(urlsToPrecache, urlsAlreadyPrecached);\n }\n\n return {\n updatedURLs: urlsToPrecache,\n notUpdatedURLs: urlsAlreadyPrecached,\n };\n }\n\n /**\n * Deletes assets that are no longer present in the current precache manifest.\n * Call this method from the service worker activate event.\n *\n * @return {Promise<workbox.precaching.CleanupResult>}\n */\n async activate() {\n const cache = await caches.open(this._cacheName);\n const currentlyCachedRequests = await cache.keys();\n const expectedCacheKeys = new Set(this._urlsToCacheKeys.values());\n\n const deletedURLs = [];\n for (const request of currentlyCachedRequests) {\n if (!expectedCacheKeys.has(request.url)) {\n await cache.delete(request);\n deletedURLs.push(request.url);\n }\n }\n\n if (process.env.NODE_ENV !== 'production') {\n printCleanupDetails(deletedURLs);\n }\n\n return {deletedURLs};\n }\n\n /**\n * Requests the entry and saves it to the cache if the response is valid.\n * By default, any response with a status code of less than 400 (including\n * opaque responses) is considered valid.\n *\n * If you need to use custom criteria to determine what's valid and what\n * isn't, then pass in an item in `options.plugins` that implements the\n * `cacheWillUpdate()` lifecycle event.\n *\n * @private\n * @param {Object} options\n * @param {string} options.url The URL to fetch and cache.\n * @param {Event} [options.event] The install event (if passed).\n * @param {Array<Object>} [options.plugins] An array of plugins to apply to\n * fetch and caching.\n */\n async _addURLToCache({url, event, plugins}) {\n const request = new Request(url, {credentials: 'same-origin'});\n let response = await fetchWrapper.fetch({\n event,\n plugins,\n request,\n });\n\n // Allow developers to override the default logic about what is and isn't\n // valid by passing in a plugin implementing cacheWillUpdate(), e.g.\n // a workbox.cacheableResponse.Plugin instance.\n let cacheWillUpdateCallback;\n for (const plugin of (plugins || [])) {\n if ('cacheWillUpdate' in plugin) {\n cacheWillUpdateCallback = plugin.cacheWillUpdate.bind(plugin);\n }\n }\n\n const isValidResponse = cacheWillUpdateCallback ?\n // Use a callback if provided. It returns a truthy value if valid.\n cacheWillUpdateCallback({event, request, response}) :\n // Otherwise, default to considering any response status under 400 valid.\n // This includes, by default, considering opaque responses valid.\n response.status < 400;\n\n // Consider this a failure, leading to the `install` handler failing, if\n // we get back an invalid response.\n if (!isValidResponse) {\n throw new WorkboxError('bad-precaching-response', {\n url,\n status: response.status,\n });\n }\n\n if (response.redirected) {\n response = await cleanRedirect(response);\n }\n\n await cacheWrapper.put({\n event,\n plugins,\n request,\n response,\n cacheName: this._cacheName,\n matchOptions: {\n ignoreSearch: true,\n },\n });\n }\n\n /**\n * Returns a mapping of a precached URL to the corresponding cache key, taking\n * into account the revision information for the URL.\n *\n * @return {Map<string, string>} A URL to cache key mapping.\n */\n getURLsToCacheKeys() {\n return this._urlsToCacheKeys;\n }\n\n /**\n * Returns a list of all the URLs that have been precached by the current\n * service worker.\n *\n * @return {Array<string>} The precached URLs.\n */\n getCachedURLs() {\n return [...this._urlsToCacheKeys.keys()];\n }\n\n /**\n * Returns the cache key used for storing a given URL. If that URL is\n * unversioned, like `/index.html', then the cache key will be the original\n * URL with a search parameter appended to it.\n *\n * @param {string} url A URL whose cache key you want to look up.\n * @return {string} The versioned URL that corresponds to a cache key\n * for the original URL, or undefined if that URL isn't precached.\n */\n getCacheKeyForURL(url) {\n const urlObject = new URL(url, location);\n return this._urlsToCacheKeys.get(urlObject.href);\n }\n}\n\nexport {PrecacheController};\n","/*\n Copyright 2018 Google LLC\n\n Use of this source code is governed by an MIT-style\n license that can be found in the LICENSE file or at\n https://opensource.org/licenses/MIT.\n*/\n\nimport '../_version.mjs';\n\n/**\n * @param {Response} response\n * @return {Response}\n *\n * @private\n * @memberof module:workbox-precaching\n */\nexport async function cleanRedirect(response) {\n const clonedResponse = response.clone();\n\n // Not all browsers support the Response.body stream, so fall back\n // to reading the entire body into memory as a blob.\n const bodyPromise = 'body' in clonedResponse ?\n Promise.resolve(clonedResponse.body) :\n clonedResponse.blob();\n\n const body = await bodyPromise;\n\n // new Response() is happy when passed either a stream or a Blob.\n return new Response(body, {\n headers: clonedResponse.headers,\n status: clonedResponse.status,\n statusText: clonedResponse.statusText,\n });\n}\n","/*\n Copyright 2019 Google LLC\n\n Use of this source code is governed by an MIT-style\n license that can be found in the LICENSE file or at\n https://opensource.org/licenses/MIT.\n*/\n\nimport {PrecacheController} from '../PrecacheController.mjs';\nimport '../_version.mjs';\n\n\nlet precacheController;\n\n/**\n * @return {PrecacheController}\n * @private\n */\nexport const getOrCreatePrecacheController = () => {\n if (!precacheController) {\n precacheController = new PrecacheController();\n }\n return precacheController;\n};\n","/*\n Copyright 2019 Google LLC\n\n Use of this source code is governed by an MIT-style\n license that can be found in the LICENSE file or at\n https://opensource.org/licenses/MIT.\n*/\n\nimport {getOrCreatePrecacheController}\n from './getOrCreatePrecacheController.mjs';\nimport {generateURLVariations} from './generateURLVariations.mjs';\nimport '../_version.mjs';\n\n/**\n * This function will take the request URL and manipulate it based on the\n * configuration options.\n *\n * @param {string} url\n * @param {Object} options\n * @return {string} Returns the URL in the cache that matches the request,\n * if possible.\n *\n * @private\n */\nexport const getCacheKeyForURL = (url, options) => {\n const precacheController = getOrCreatePrecacheController();\n\n const urlsToCacheKeys = precacheController.getURLsToCacheKeys();\n for (const possibleURL of generateURLVariations(url, options)) {\n const possibleCacheKey = urlsToCacheKeys.get(possibleURL);\n if (possibleCacheKey) {\n return possibleCacheKey;\n }\n }\n};\n","/*\n Copyright 2019 Google LLC\n\n Use of this source code is governed by an MIT-style\n license that can be found in the LICENSE file or at\n https://opensource.org/licenses/MIT.\n*/\n\nimport {removeIgnoredSearchParams} from './removeIgnoredSearchParams.mjs';\n\nimport '../_version.mjs';\n\n/**\n * Generator function that yields possible variations on the original URL to\n * check, one at a time.\n *\n * @param {string} url\n * @param {Object} options\n *\n * @private\n * @memberof module:workbox-precaching\n */\nexport function* generateURLVariations(url, {\n ignoreURLParametersMatching,\n directoryIndex,\n cleanURLs,\n urlManipulation,\n} = {}) {\n const urlObject = new URL(url, location);\n urlObject.hash = '';\n yield urlObject.href;\n\n const urlWithoutIgnoredParams = removeIgnoredSearchParams(\n urlObject, ignoreURLParametersMatching);\n yield urlWithoutIgnoredParams.href;\n\n if (directoryIndex && urlWithoutIgnoredParams.pathname.endsWith('/')) {\n const directoryURL = new URL(urlWithoutIgnoredParams);\n directoryURL.pathname += directoryIndex;\n yield directoryURL.href;\n }\n\n if (cleanURLs) {\n const cleanURL = new URL(urlWithoutIgnoredParams);\n cleanURL.pathname += '.html';\n yield cleanURL.href;\n }\n\n if (urlManipulation) {\n const additionalURLs = urlManipulation({url: urlObject});\n for (const urlToAttempt of additionalURLs) {\n yield urlToAttempt.href;\n }\n }\n}\n","/*\n Copyright 2018 Google LLC\n\n Use of this source code is governed by an MIT-style\n license that can be found in the LICENSE file or at\n https://opensource.org/licenses/MIT.\n*/\n\nimport '../_version.mjs';\n\n/**\n * Removes any URL search parameters that should be ignored.\n *\n * @param {URL} urlObject The original URL.\n * @param {Array<RegExp>} ignoreURLParametersMatching RegExps to test against\n * each search parameter name. Matches mean that the search parameter should be\n * ignored.\n * @return {URL} The URL with any ignored search parameters removed.\n *\n * @private\n * @memberof module:workbox-precaching\n */\nexport function removeIgnoredSearchParams(urlObject,\n ignoreURLParametersMatching) {\n // Convert the iterable into an array at the start of the loop to make sure\n // deletion doesn't mess up iteration.\n for (const paramName of [...urlObject.searchParams.keys()]) {\n if (ignoreURLParametersMatching.some((regExp) => regExp.test(paramName))) {\n urlObject.searchParams.delete(paramName);\n }\n }\n\n return urlObject;\n}\n","\n/*\n Copyright 2019 Google LLC\n Use of this source code is governed by an MIT-style\n license that can be found in the LICENSE file or at\n https://opensource.org/licenses/MIT.\n*/\n\nimport {addFetchListener} from './utils/addFetchListener.mjs';\nimport './_version.mjs';\n\n\nlet listenerAdded = false;\n\n/**\n * Add a `fetch` listener to the service worker that will\n * respond to\n * [network requests]{@link https://developer.mozilla.org/en-US/docs/Web/API/Service_Worker_API/Using_Service_Workers#Custom_responses_to_requests}\n * with precached assets.\n *\n * Requests for assets that aren't precached, the `FetchEvent` will not be\n * responded to, allowing the event to fall through to other `fetch` event\n * listeners.\n *\n * @param {Object} options\n * @param {string} [options.directoryIndex=index.html] The `directoryIndex` will\n * check cache entries for a URLs ending with '/' to see if there is a hit when\n * appending the `directoryIndex` value.\n * @param {Array<RegExp>} [options.ignoreURLParametersMatching=[/^utm_/]] An\n * array of regex's to remove search params when looking for a cache match.\n * @param {boolean} [options.cleanURLs=true] The `cleanURLs` option will\n * check the cache for the URL with a `.html` added to the end of the end.\n * @param {workbox.precaching~urlManipulation} [options.urlManipulation]\n * This is a function that should take a URL and return an array of\n * alternative URL's that should be checked for precache matches.\n *\n * @alias workbox.precaching.addRoute\n */\nexport const addRoute = (options) => {\n if (!listenerAdded) {\n addFetchListener(options);\n listenerAdded = true;\n }\n};\n","/*\n Copyright 2019 Google LLC\n\n Use of this source code is governed by an MIT-style\n license that can be found in the LICENSE file or at\n https://opensource.org/licenses/MIT.\n*/\n\nimport {cacheNames} from 'workbox-core/_private/cacheNames.mjs';\nimport {getFriendlyURL} from 'workbox-core/_private/getFriendlyURL.mjs';\nimport {logger} from 'workbox-core/_private/logger.mjs';\nimport {getCacheKeyForURL} from './getCacheKeyForURL.mjs';\nimport '../_version.mjs';\n\n\n/**\n * Adds a `fetch` listener to the service worker that will\n * respond to\n * [network requests]{@link https://developer.mozilla.org/en-US/docs/Web/API/Service_Worker_API/Using_Service_Workers#Custom_responses_to_requests}\n * with precached assets.\n *\n * Requests for assets that aren't precached, the `FetchEvent` will not be\n * responded to, allowing the event to fall through to other `fetch` event\n * listeners.\n *\n * NOTE: when called more than once this method will replace the previously set\n * configuration options. Calling it more than once is not recommended outside\n * of tests.\n *\n * @private\n * @param {Object} options\n * @param {string} [options.directoryIndex=index.html] The `directoryIndex` will\n * check cache entries for a URLs ending with '/' to see if there is a hit when\n * appending the `directoryIndex` value.\n * @param {Array<RegExp>} [options.ignoreURLParametersMatching=[/^utm_/]] An\n * array of regex's to remove search params when looking for a cache match.\n * @param {boolean} [options.cleanURLs=true] The `cleanURLs` option will\n * check the cache for the URL with a `.html` added to the end of the end.\n * @param {workbox.precaching~urlManipulation} [options.urlManipulation]\n * This is a function that should take a URL and return an array of\n * alternative URL's that should be checked for precache matches.\n */\nexport const addFetchListener = ({\n ignoreURLParametersMatching = [/^utm_/],\n directoryIndex = 'index.html',\n cleanURLs = true,\n urlManipulation = null,\n} = {}) => {\n const cacheName = cacheNames.getPrecacheName();\n\n addEventListener('fetch', (event) => {\n const precachedURL = getCacheKeyForURL(event.request.url, {\n cleanURLs,\n directoryIndex,\n ignoreURLParametersMatching,\n urlManipulation,\n });\n if (!precachedURL) {\n if (process.env.NODE_ENV !== 'production') {\n logger.debug(`Precaching did not find a match for ` +\n getFriendlyURL(event.request.url));\n }\n return;\n }\n\n let responsePromise = caches.open(cacheName).then((cache) => {\n return cache.match(precachedURL);\n }).then((cachedResponse) => {\n if (cachedResponse) {\n return cachedResponse;\n }\n\n // Fall back to the network if we don't have a cached response\n // (perhaps due to manual cache cleanup).\n if (process.env.NODE_ENV !== 'production') {\n logger.warn(`The precached response for ` +\n `${getFriendlyURL(precachedURL)} in ${cacheName} was not found. ` +\n `Falling back to the network instead.`);\n }\n\n return fetch(precachedURL);\n });\n\n if (process.env.NODE_ENV !== 'production') {\n responsePromise = responsePromise.then((response) => {\n // Workbox is going to handle the route.\n // print the routing details to the console.\n logger.groupCollapsed(`Precaching is responding to: ` +\n getFriendlyURL(event.request.url));\n logger.log(`Serving the precached url: ${precachedURL}`);\n\n logger.groupCollapsed(`View request details here.`);\n logger.log(event.request);\n logger.groupEnd();\n\n logger.groupCollapsed(`View response details here.`);\n logger.log(response);\n logger.groupEnd();\n\n logger.groupEnd();\n return response;\n });\n }\n\n event.respondWith(responsePromise);\n });\n};\n","/*\n Copyright 2019 Google LLC\n\n Use of this source code is governed by an MIT-style\n license that can be found in the LICENSE file or at\n https://opensource.org/licenses/MIT.\n*/\n\nimport {logger} from 'workbox-core/_private/logger.mjs';\nimport {getOrCreatePrecacheController} from './utils/getOrCreatePrecacheController.mjs';\nimport {precachePlugins} from './utils/precachePlugins.mjs';\nimport './_version.mjs';\n\n\nconst installListener = (event) => {\n const precacheController = getOrCreatePrecacheController();\n const plugins = precachePlugins.get();\n\n event.waitUntil(\n precacheController.install({event, plugins})\n .catch((error) => {\n if (process.env.NODE_ENV !== 'production') {\n logger.error(`Service worker installation failed. It will ` +\n `be retried automatically during the next navigation.`);\n }\n // Re-throw the error to ensure installation fails.\n throw error;\n })\n );\n};\n\nconst activateListener = (event) => {\n const precacheController = getOrCreatePrecacheController();\n const plugins = precachePlugins.get();\n\n event.waitUntil(precacheController.activate({event, plugins}));\n};\n\n/**\n * Adds items to the precache list, removing any duplicates and\n * stores the files in the\n * [\"precache cache\"]{@link module:workbox-core.cacheNames} when the service\n * worker installs.\n *\n * This method can be called multiple times.\n *\n * Please note: This method **will not** serve any of the cached files for you.\n * It only precaches files. To respond to a network request you call\n * [addRoute()]{@link module:workbox-precaching.addRoute}.\n *\n * If you have a single array of files to precache, you can just call\n * [precacheAndRoute()]{@link module:workbox-precaching.precacheAndRoute}.\n *\n * @param {Array<Object|string>} entries Array of entries to precache.\n *\n * @alias workbox.precaching.precache\n */\nexport const precache = (entries) => {\n const precacheController = getOrCreatePrecacheController();\n precacheController.addToCacheList(entries);\n\n if (entries.length > 0) {\n // NOTE: these listeners will only be added once (even if the `precache()`\n // method is called multiple times) because event listeners are implemented\n // as a set, where each listener must be unique.\n addEventListener('install', installListener);\n addEventListener('activate', activateListener);\n }\n};\n","/*\n Copyright 2019 Google LLC\n\n Use of this source code is governed by an MIT-style\n license that can be found in the LICENSE file or at\n https://opensource.org/licenses/MIT.\n*/\n\nimport {precachePlugins} from './utils/precachePlugins.mjs';\nimport './_version.mjs';\n\n\n/**\n * Adds plugins to precaching.\n *\n * @param {Array<Object>} newPlugins\n *\n * @alias workbox.precaching.addPlugins\n */\nconst addPlugins = (newPlugins) => {\n precachePlugins.add(newPlugins);\n};\n\nexport {addPlugins};\n","/*\n Copyright 2019 Google LLC\n\n Use of this source code is governed by an MIT-style\n license that can be found in the LICENSE file or at\n https://opensource.org/licenses/MIT.\n*/\n\nimport {cacheNames} from 'workbox-core/_private/cacheNames.mjs';\nimport {logger} from 'workbox-core/_private/logger.mjs';\nimport {deleteOutdatedCaches} from './utils/deleteOutdatedCaches.mjs';\nimport './_version.mjs';\n\n\n/**\n * Adds an `activate` event listener which will clean up incompatible\n * precaches that were created by older versions of Workbox.\n *\n * @alias workbox.precaching.cleanupOutdatedCaches\n */\nexport const cleanupOutdatedCaches = () => {\n addEventListener('activate', (event) => {\n const cacheName = cacheNames.getPrecacheName();\n\n event.waitUntil(deleteOutdatedCaches(cacheName).then((cachesDeleted) => {\n if (process.env.NODE_ENV !== 'production') {\n if (cachesDeleted.length > 0) {\n logger.log(`The following out-of-date precaches were cleaned up ` +\n `automatically:`, cachesDeleted);\n }\n }\n }));\n });\n};\n","/*\n Copyright 2018 Google LLC\n\n Use of this source code is governed by an MIT-style\n license that can be found in the LICENSE file or at\n https://opensource.org/licenses/MIT.\n*/\n\nimport '../_version.mjs';\n\nconst SUBSTRING_TO_FIND = '-precache-';\n\n/**\n * Cleans up incompatible precaches that were created by older versions of\n * Workbox, by a service worker registered under the current scope.\n *\n * This is meant to be called as part of the `activate` event.\n *\n * This should be safe to use as long as you don't include `substringToFind`\n * (defaulting to `-precache-`) in your non-precache cache names.\n *\n * @param {string} currentPrecacheName The cache name currently in use for\n * precaching. This cache won't be deleted.\n * @param {string} [substringToFind='-precache-'] Cache names which include this\n * substring will be deleted (excluding `currentPrecacheName`).\n * @return {Array<string>} A list of all the cache names that were deleted.\n *\n * @private\n * @memberof module:workbox-precaching\n */\nconst deleteOutdatedCaches = async (\n currentPrecacheName,\n substringToFind = SUBSTRING_TO_FIND) => {\n const cacheNames = await caches.keys();\n\n const cacheNamesToDelete = cacheNames.filter((cacheName) => {\n return cacheName.includes(substringToFind) &&\n cacheName.includes(self.registration.scope) &&\n cacheName !== currentPrecacheName;\n });\n\n await Promise.all(\n cacheNamesToDelete.map((cacheName) => caches.delete(cacheName)));\n\n return cacheNamesToDelete;\n};\n\nexport {deleteOutdatedCaches};\n\n","/*\n Copyright 2019 Google LLC\n\n Use of this source code is governed by an MIT-style\n license that can be found in the LICENSE file or at\n https://opensource.org/licenses/MIT.\n*/\n\nimport {getOrCreatePrecacheController}\n from './utils/getOrCreatePrecacheController.mjs';\nimport './_version.mjs';\n\n\n/**\n * Takes in a URL, and returns the corresponding URL that could be used to\n * lookup the entry in the precache.\n *\n * If a relative URL is provided, the location of the service worker file will\n * be used as the base.\n *\n * For precached entries without revision information, the cache key will be the\n * same as the original URL.\n *\n * For precached entries with revision information, the cache key will be the\n * original URL with the addition of a query parameter used for keeping track of\n * the revision info.\n *\n * @param {string} url The URL whose cache key to look up.\n * @return {string} The cache key that corresponds to that URL.\n *\n * @alias workbox.precaching.getCacheKeyForURL\n */\nexport const getCacheKeyForURL = (url) => {\n const precacheController = getOrCreatePrecacheController();\n return 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