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{"version":3,"file":"workbox-strategies.prod.js","sources":["../_version.mjs","../CacheFirst.mjs","../CacheOnly.mjs","../plugins/cacheOkAndOpaquePlugin.mjs","../NetworkFirst.mjs","../NetworkOnly.mjs","../StaleWhileRevalidate.mjs","../index.mjs"],"sourcesContent":["try{self['workbox:strategies:4.3.1']&&_()}catch(e){}// eslint-disable-line","/*\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 {getFriendlyURL} from 'workbox-core/_private/getFriendlyURL.mjs';\nimport {logger} from 'workbox-core/_private/logger.mjs';\nimport {WorkboxError} from 'workbox-core/_private/WorkboxError.mjs';\n\nimport {messages} from './utils/messages.mjs';\nimport './_version.mjs';\n\n/**\n * An implementation of a [cache-first]{@link https://developers.google.com/web/fundamentals/instant-and-offline/offline-cookbook/#cache-falling-back-to-network}\n * request strategy.\n *\n * A cache first strategy is useful for assets that have been revisioned,\n * such as URLs like `/styles/example.a8f5f1.css`, since they\n * can be cached for long periods of time.\n *\n * If the network request fails, and there is no cache match, this will throw\n * a `WorkboxError` exception.\n *\n * @memberof workbox.strategies\n */\nclass CacheFirst {\n /**\n * @param {Object} options\n * @param {string} options.cacheName Cache name to store and retrieve\n * requests. Defaults to cache names provided by\n * [workbox-core]{@link workbox.core.cacheNames}.\n * @param {Array<Object>} options.plugins [Plugins]{@link https://developers.google.com/web/tools/workbox/guides/using-plugins}\n * to use in conjunction with this caching strategy.\n * @param {Object} options.fetchOptions Values passed along to the\n * [`init`](https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/fetch#Parameters)\n * of all fetch() requests made by this strategy.\n * @param {Object} options.matchOptions [`CacheQueryOptions`](https://w3c.github.io/ServiceWorker/#dictdef-cachequeryoptions)\n */\n constructor(options = {}) {\n this._cacheName = cacheNames.getRuntimeName(options.cacheName);\n this._plugins = options.plugins || [];\n this._fetchOptions = options.fetchOptions || null;\n this._matchOptions = options.matchOptions || null;\n }\n\n /**\n * This method will perform a request strategy and follows an API that\n * will work with the\n * [Workbox Router]{@link workbox.routing.Router}.\n *\n * @param {Object} options\n * @param {Request} options.request The request to run this strategy for.\n * @param {Event} [options.event] The event that triggered the request.\n * @return {Promise<Response>}\n */\n async handle({event, request}) {\n return this.makeRequest({\n event,\n request: request || event.request,\n });\n }\n\n /**\n * This method can be used to perform a make a standalone request outside the\n * context of the [Workbox Router]{@link workbox.routing.Router}.\n *\n * See \"[Advanced Recipes](https://developers.google.com/web/tools/workbox/guides/advanced-recipes#make-requests)\"\n * for more usage information.\n *\n * @param {Object} options\n * @param {Request|string} options.request Either a\n * [`Request`]{@link https://developer.mozilla.org/en-US/docs/Web/API/Request}\n * object, or a string URL, corresponding to the request to be made.\n * @param {FetchEvent} [options.event] If provided, `event.waitUntil()` will\n be called automatically to extend the service worker's lifetime.\n * @return {Promise<Response>}\n */\n async makeRequest({event, request}) {\n const logs = [];\n\n if (typeof request === 'string') {\n request = new Request(request);\n }\n\n if (process.env.NODE_ENV !== 'production') {\n assert.isInstance(request, Request, {\n moduleName: 'workbox-strategies',\n className: 'CacheFirst',\n funcName: 'makeRequest',\n paramName: 'request',\n });\n }\n\n let response = await cacheWrapper.match({\n cacheName: this._cacheName,\n request,\n event,\n matchOptions: this._matchOptions,\n plugins: this._plugins,\n });\n\n let error;\n if (!response) {\n if (process.env.NODE_ENV !== 'production') {\n logs.push(\n `No response found in the '${this._cacheName}' cache. ` +\n `Will respond with a network request.`);\n }\n try {\n response = await this._getFromNetwork(request, event);\n } catch (err) {\n error = err;\n }\n\n if (process.env.NODE_ENV !== 'production') {\n if (response) {\n logs.push(`Got response from network.`);\n } else {\n logs.push(`Unable to get a response from the network.`);\n }\n }\n } else {\n if (process.env.NODE_ENV !== 'production') {\n logs.push(\n `Found a cached response in the '${this._cacheName}' cache.`);\n }\n }\n\n if (process.env.NODE_ENV !== 'production') {\n logger.groupCollapsed(\n messages.strategyStart('CacheFirst', request));\n for (let log of logs) {\n logger.log(log);\n }\n messages.printFinalResponse(response);\n logger.groupEnd();\n }\n\n if (!response) {\n throw new WorkboxError('no-response', {url: request.url, error});\n }\n return response;\n }\n\n /**\n * Handles the network and cache part of CacheFirst.\n *\n * @param {Request} request\n * @param {FetchEvent} [event]\n * @return {Promise<Response>}\n *\n * @private\n */\n async _getFromNetwork(request, event) {\n const response = await fetchWrapper.fetch({\n request,\n event,\n fetchOptions: this._fetchOptions,\n plugins: this._plugins,\n });\n\n // Keep the service worker while we put the request to the cache\n const responseClone = response.clone();\n const cachePutPromise = cacheWrapper.put({\n cacheName: this._cacheName,\n request,\n response: responseClone,\n event,\n plugins: this._plugins,\n });\n\n if (event) {\n try {\n event.waitUntil(cachePutPromise);\n } catch (error) {\n if (process.env.NODE_ENV !== 'production') {\n logger.warn(`Unable to ensure service worker stays alive when ` +\n `updating cache for '${getFriendlyURL(request.url)}'.`);\n }\n }\n }\n\n return response;\n }\n}\n\nexport {CacheFirst};\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 {logger} from 'workbox-core/_private/logger.mjs';\nimport {WorkboxError} from 'workbox-core/_private/WorkboxError.mjs';\n\nimport {messages} from './utils/messages.mjs';\nimport './_version.mjs';\n\n\n/**\n * An implementation of a\n * [cache-only]{@link https://developers.google.com/web/fundamentals/instant-and-offline/offline-cookbook/#cache-only}\n * request strategy.\n *\n * This class is useful if you want to take advantage of any\n * [Workbox plugins]{@link https://developers.google.com/web/tools/workbox/guides/using-plugins}.\n *\n * If there is no cache match, this will throw a `WorkboxError` exception.\n *\n * @memberof workbox.strategies\n */\nclass CacheOnly {\n /**\n * @param {Object} options\n * @param {string} options.cacheName Cache name to store and retrieve\n * requests. Defaults to cache names provided by\n * [workbox-core]{@link workbox.core.cacheNames}.\n * @param {Array<Object>} options.plugins [Plugins]{@link https://developers.google.com/web/tools/workbox/guides/using-plugins}\n * to use in conjunction with this caching strategy.\n * @param {Object} options.matchOptions [`CacheQueryOptions`](https://w3c.github.io/ServiceWorker/#dictdef-cachequeryoptions)\n */\n constructor(options = {}) {\n this._cacheName = cacheNames.getRuntimeName(options.cacheName);\n this._plugins = options.plugins || [];\n this._matchOptions = options.matchOptions || null;\n }\n\n /**\n * This method will perform a request strategy and follows an API that\n * will work with the\n * [Workbox Router]{@link workbox.routing.Router}.\n *\n * @param {Object} options\n * @param {Request} options.request The request to run this strategy for.\n * @param {Event} [options.event] The event that triggered the request.\n * @return {Promise<Response>}\n */\n async handle({event, request}) {\n return this.makeRequest({\n event,\n request: request || event.request,\n });\n }\n\n /**\n * This method can be used to perform a make a standalone request outside the\n * context of the [Workbox Router]{@link workbox.routing.Router}.\n *\n * See \"[Advanced Recipes](https://developers.google.com/web/tools/workbox/guides/advanced-recipes#make-requests)\"\n * for more usage information.\n *\n * @param {Object} options\n * @param {Request|string} options.request Either a\n * [`Request`]{@link https://developer.mozilla.org/en-US/docs/Web/API/Request}\n * object, or a string URL, corresponding to the request to be made.\n * @param {FetchEvent} [options.event] If provided, `event.waitUntil()` will\n * be called automatically to extend the service worker's lifetime.\n * @return {Promise<Response>}\n */\n async makeRequest({event, request}) {\n if (typeof request === 'string') {\n request = new Request(request);\n }\n\n if (process.env.NODE_ENV !== 'production') {\n assert.isInstance(request, Request, {\n moduleName: 'workbox-strategies',\n className: 'CacheOnly',\n funcName: 'makeRequest',\n paramName: 'request',\n });\n }\n\n const response = await cacheWrapper.match({\n cacheName: this._cacheName,\n request,\n event,\n matchOptions: this._matchOptions,\n plugins: this._plugins,\n });\n\n if (process.env.NODE_ENV !== 'production') {\n logger.groupCollapsed(\n messages.strategyStart('CacheOnly', request));\n if (response) {\n logger.log(`Found a cached response in the '${this._cacheName}'` +\n ` cache.`);\n messages.printFinalResponse(response);\n } else {\n logger.log(`No response found in the '${this._cacheName}' cache.`);\n }\n logger.groupEnd();\n }\n\n if (!response) {\n throw new WorkboxError('no-response', {url: request.url});\n }\n return response;\n }\n}\n\nexport {CacheOnly};\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\nexport const cacheOkAndOpaquePlugin = {\n /**\n * Returns a valid response (to allow caching) if the status is 200 (OK) or\n * 0 (opaque).\n *\n * @param {Object} options\n * @param {Response} options.response\n * @return {Response|null}\n *\n * @private\n */\n cacheWillUpdate: ({response}) => {\n if (response.status === 200 || response.status === 0) {\n return response;\n }\n return null;\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 {getFriendlyURL} from 'workbox-core/_private/getFriendlyURL.mjs';\nimport {logger} from 'workbox-core/_private/logger.mjs';\nimport {WorkboxError} from 'workbox-core/_private/WorkboxError.mjs';\n\nimport {messages} from './utils/messages.mjs';\nimport {cacheOkAndOpaquePlugin} from './plugins/cacheOkAndOpaquePlugin.mjs';\nimport './_version.mjs';\n\n/**\n * An implementation of a\n * [network first]{@link https://developers.google.com/web/fundamentals/instant-and-offline/offline-cookbook/#network-falling-back-to-cache}\n * request strategy.\n *\n * By default, this strategy will cache responses with a 200 status code as\n * well as [opaque responses]{@link https://developers.google.com/web/tools/workbox/guides/handle-third-party-requests}.\n * Opaque responses are are cross-origin requests where the response doesn't\n * support [CORS]{@link https://enable-cors.org/}.\n *\n * If the network request fails, and there is no cache match, this will throw\n * a `WorkboxError` exception.\n *\n * @memberof workbox.strategies\n */\nclass NetworkFirst {\n /**\n * @param {Object} options\n * @param {string} options.cacheName Cache name to store and retrieve\n * requests. Defaults to cache names provided by\n * [workbox-core]{@link workbox.core.cacheNames}.\n * @param {Array<Object>} options.plugins [Plugins]{@link https://developers.google.com/web/tools/workbox/guides/using-plugins}\n * to use in conjunction with this caching strategy.\n * @param {Object} options.fetchOptions Values passed along to the\n * [`init`](https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/fetch#Parameters)\n * of all fetch() requests made by this strategy.\n * @param {Object} options.matchOptions [`CacheQueryOptions`](https://w3c.github.io/ServiceWorker/#dictdef-cachequeryoptions)\n * @param {number} options.networkTimeoutSeconds If set, any network requests\n * that fail to respond within the timeout will fallback to the cache.\n *\n * This option can be used to combat\n * \"[lie-fi]{@link https://developers.google.com/web/fundamentals/performance/poor-connectivity/#lie-fi}\"\n * scenarios.\n */\n constructor(options = {}) {\n this._cacheName = cacheNames.getRuntimeName(options.cacheName);\n\n if (options.plugins) {\n let isUsingCacheWillUpdate =\n options.plugins.some((plugin) => !!plugin.cacheWillUpdate);\n this._plugins = isUsingCacheWillUpdate ?\n options.plugins : [cacheOkAndOpaquePlugin, ...options.plugins];\n } else {\n // No plugins passed in, use the default plugin.\n this._plugins = [cacheOkAndOpaquePlugin];\n }\n\n this._networkTimeoutSeconds = options.networkTimeoutSeconds;\n if (process.env.NODE_ENV !== 'production') {\n if (this._networkTimeoutSeconds) {\n assert.isType(this._networkTimeoutSeconds, 'number', {\n moduleName: 'workbox-strategies',\n className: 'NetworkFirst',\n funcName: 'constructor',\n paramName: 'networkTimeoutSeconds',\n });\n }\n }\n\n this._fetchOptions = options.fetchOptions || null;\n this._matchOptions = options.matchOptions || null;\n }\n\n /**\n * This method will perform a request strategy and follows an API that\n * will work with the\n * [Workbox Router]{@link workbox.routing.Router}.\n *\n * @param {Object} options\n * @param {Request} options.request The request to run this strategy for.\n * @param {Event} [options.event] The event that triggered the request.\n * @return {Promise<Response>}\n */\n async handle({event, request}) {\n return this.makeRequest({\n event,\n request: request || event.request,\n });\n }\n\n /**\n * This method can be used to perform a make a standalone request outside the\n * context of the [Workbox Router]{@link workbox.routing.Router}.\n *\n * See \"[Advanced Recipes](https://developers.google.com/web/tools/workbox/guides/advanced-recipes#make-requests)\"\n * for more usage information.\n *\n * @param {Object} options\n * @param {Request|string} options.request Either a\n * [`Request`]{@link https://developer.mozilla.org/en-US/docs/Web/API/Request}\n * object, or a string URL, corresponding to the request to be made.\n * @param {FetchEvent} [options.event] If provided, `event.waitUntil()` will\n * be called automatically to extend the service worker's lifetime.\n * @return {Promise<Response>}\n */\n async makeRequest({event, request}) {\n const logs = [];\n\n if (typeof request === 'string') {\n request = new Request(request);\n }\n\n if (process.env.NODE_ENV !== 'production') {\n assert.isInstance(request, Request, {\n moduleName: 'workbox-strategies',\n className: 'NetworkFirst',\n funcName: 'handle',\n paramName: 'makeRequest',\n });\n }\n\n const promises = [];\n let timeoutId;\n\n if (this._networkTimeoutSeconds) {\n const {id, promise} = this._getTimeoutPromise({request, event, logs});\n timeoutId = id;\n promises.push(promise);\n }\n\n const networkPromise =\n this._getNetworkPromise({timeoutId, request, event, logs});\n promises.push(networkPromise);\n\n // Promise.race() will resolve as soon as the first promise resolves.\n let response = await Promise.race(promises);\n // If Promise.race() resolved with null, it might be due to a network\n // timeout + a cache miss. If that were to happen, we'd rather wait until\n // the networkPromise resolves instead of returning null.\n // Note that it's fine to await an already-resolved promise, so we don't\n // have to check to see if it's still \"in flight\".\n if (!response) {\n response = await networkPromise;\n }\n\n if (process.env.NODE_ENV !== 'production') {\n logger.groupCollapsed(\n messages.strategyStart('NetworkFirst', request));\n for (let log of logs) {\n logger.log(log);\n }\n messages.printFinalResponse(response);\n logger.groupEnd();\n }\n\n if (!response) {\n throw new WorkboxError('no-response', {url: request.url});\n }\n return response;\n }\n\n /**\n * @param {Object} options\n * @param {Request} options.request\n * @param {Array} options.logs A reference to the logs array\n * @param {Event} [options.event]\n * @return {Promise<Response>}\n *\n * @private\n */\n _getTimeoutPromise({request, logs, event}) {\n let timeoutId;\n const timeoutPromise = new Promise((resolve) => {\n const onNetworkTimeout = async () => {\n if (process.env.NODE_ENV !== 'production') {\n logs.push(`Timing out the network response at ` +\n `${this._networkTimeoutSeconds} seconds.`);\n }\n\n resolve(await this._respondFromCache({request, event}));\n };\n\n timeoutId = setTimeout(\n onNetworkTimeout,\n this._networkTimeoutSeconds * 1000,\n );\n });\n\n return {\n promise: timeoutPromise,\n id: timeoutId,\n };\n }\n\n /**\n * @param {Object} options\n * @param {number|undefined} options.timeoutId\n * @param {Request} options.request\n * @param {Array} options.logs A reference to the logs Array.\n * @param {Event} [options.event]\n * @return {Promise<Response>}\n *\n * @private\n */\n async _getNetworkPromise({timeoutId, request, logs, event}) {\n let error;\n let response;\n try {\n response = await fetchWrapper.fetch({\n request,\n event,\n fetchOptions: this._fetchOptions,\n plugins: this._plugins,\n });\n } catch (err) {\n error = err;\n }\n\n if (timeoutId) {\n clearTimeout(timeoutId);\n }\n\n if (process.env.NODE_ENV !== 'production') {\n if (response) {\n logs.push(`Got response from network.`);\n } else {\n logs.push(`Unable to get a response from the network. Will respond ` +\n `with a cached response.`);\n }\n }\n\n if (error || !response) {\n response = await this._respondFromCache({request, event});\n if (process.env.NODE_ENV !== 'production') {\n if (response) {\n logs.push(`Found a cached response in the '${this._cacheName}'` +\n ` cache.`);\n } else {\n logs.push(`No response found in the '${this._cacheName}' cache.`);\n }\n }\n } else {\n // Keep the service worker alive while we put the request in the cache\n const responseClone = response.clone();\n const cachePut = cacheWrapper.put({\n cacheName: this._cacheName,\n request,\n response: responseClone,\n event,\n plugins: this._plugins,\n });\n\n if (event) {\n try {\n // The event has been responded to so we can keep the SW alive to\n // respond to the request\n event.waitUntil(cachePut);\n } catch (err) {\n if (process.env.NODE_ENV !== 'production') {\n logger.warn(`Unable to ensure service worker stays alive when ` +\n `updating cache for '${getFriendlyURL(request.url)}'.`);\n }\n }\n }\n }\n\n return response;\n }\n\n /**\n * Used if the network timeouts or fails to make the request.\n *\n * @param {Object} options\n * @param {Request} request The request to match in the cache\n * @param {Event} [options.event]\n * @return {Promise<Object>}\n *\n * @private\n */\n _respondFromCache({event, request}) {\n return cacheWrapper.match({\n cacheName: this._cacheName,\n request,\n event,\n matchOptions: this._matchOptions,\n plugins: this._plugins,\n });\n }\n}\n\nexport {NetworkFirst};\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 {fetchWrapper} from 'workbox-core/_private/fetchWrapper.mjs';\nimport {logger} from 'workbox-core/_private/logger.mjs';\nimport {WorkboxError} from 'workbox-core/_private/WorkboxError.mjs';\n\nimport {messages} from './utils/messages.mjs';\nimport './_version.mjs';\n\n/**\n * An implementation of a\n * [network-only]{@link https://developers.google.com/web/fundamentals/instant-and-offline/offline-cookbook/#network-only}\n * request strategy.\n *\n * This class is useful if you want to take advantage of any\n * [Workbox plugins]{@link https://developers.google.com/web/tools/workbox/guides/using-plugins}.\n *\n * If the network request fails, this will throw a `WorkboxError` exception.\n *\n * @memberof workbox.strategies\n */\nclass NetworkOnly {\n /**\n * @param {Object} options\n * @param {string} options.cacheName Cache name to store and retrieve\n * requests. Defaults to cache names provided by\n * [workbox-core]{@link workbox.core.cacheNames}.\n * @param {Array<Object>} options.plugins [Plugins]{@link https://developers.google.com/web/tools/workbox/guides/using-plugins}\n * to use in conjunction with this caching strategy.\n * @param {Object} options.fetchOptions Values passed along to the\n * [`init`](https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/fetch#Parameters)\n * of all fetch() requests made by this strategy.\n */\n constructor(options = {}) {\n this._cacheName = cacheNames.getRuntimeName(options.cacheName);\n this._plugins = options.plugins || [];\n this._fetchOptions = options.fetchOptions || null;\n }\n\n /**\n * This method will perform a request strategy and follows an API that\n * will work with the\n * [Workbox Router]{@link workbox.routing.Router}.\n *\n * @param {Object} options\n * @param {Request} options.request The request to run this strategy for.\n * @param {Event} [options.event] The event that triggered the request.\n * @return {Promise<Response>}\n */\n async handle({event, request}) {\n return this.makeRequest({\n event,\n request: request || event.request,\n });\n }\n\n /**\n * This method can be used to perform a make a standalone request outside the\n * context of the [Workbox Router]{@link workbox.routing.Router}.\n *\n * See \"[Advanced Recipes](https://developers.google.com/web/tools/workbox/guides/advanced-recipes#make-requests)\"\n * for more usage information.\n *\n * @param {Object} options\n * @param {Request|string} options.request Either a\n * [`Request`]{@link https://developer.mozilla.org/en-US/docs/Web/API/Request}\n * object, or a string URL, corresponding to the request to be made.\n * @param {FetchEvent} [options.event] If provided, `event.waitUntil()` will\n * be called automatically to extend the service worker's lifetime.\n * @return {Promise<Response>}\n */\n async makeRequest({event, request}) {\n if (typeof request === 'string') {\n request = new Request(request);\n }\n\n if (process.env.NODE_ENV !== 'production') {\n assert.isInstance(request, Request, {\n moduleName: 'workbox-strategies',\n className: 'NetworkOnly',\n funcName: 'handle',\n paramName: 'request',\n });\n }\n\n let error;\n let response;\n try {\n response = await fetchWrapper.fetch({\n request,\n event,\n fetchOptions: this._fetchOptions,\n plugins: this._plugins,\n });\n } catch (err) {\n error = err;\n }\n\n if (process.env.NODE_ENV !== 'production') {\n logger.groupCollapsed(\n messages.strategyStart('NetworkOnly', request));\n if (response) {\n logger.log(`Got response from network.`);\n } else {\n logger.log(`Unable to get a response from the network.`);\n }\n messages.printFinalResponse(response);\n logger.groupEnd();\n }\n\n if (!response) {\n throw new WorkboxError('no-response', {url: request.url, error});\n }\n return response;\n }\n}\n\nexport {NetworkOnly};\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 {getFriendlyURL} from 'workbox-core/_private/getFriendlyURL.mjs';\nimport {logger} from 'workbox-core/_private/logger.mjs';\nimport {WorkboxError} from 'workbox-core/_private/WorkboxError.mjs';\n\nimport {messages} from './utils/messages.mjs';\nimport {cacheOkAndOpaquePlugin} from './plugins/cacheOkAndOpaquePlugin.mjs';\nimport './_version.mjs';\n\n/**\n * An implementation of a\n * [stale-while-revalidate]{@link https://developers.google.com/web/fundamentals/instant-and-offline/offline-cookbook/#stale-while-revalidate}\n * request strategy.\n *\n * Resources are requested from both the cache and the network in parallel.\n * The strategy will respond with the cached version if available, otherwise\n * wait for the network response. The cache is updated with the network response\n * with each successful request.\n *\n * By default, this strategy will cache responses with a 200 status code as\n * well as [opaque responses]{@link https://developers.google.com/web/tools/workbox/guides/handle-third-party-requests}.\n * Opaque responses are are cross-origin requests where the response doesn't\n * support [CORS]{@link https://enable-cors.org/}.\n *\n * If the network request fails, and there is no cache match, this will throw\n * a `WorkboxError` exception.\n *\n * @memberof workbox.strategies\n */\nclass StaleWhileRevalidate {\n /**\n * @param {Object} options\n * @param {string} options.cacheName Cache name to store and retrieve\n * requests. Defaults to cache names provided by\n * [workbox-core]{@link workbox.core.cacheNames}.\n * @param {Array<Object>} options.plugins [Plugins]{@link https://developers.google.com/web/tools/workbox/guides/using-plugins}\n * to use in conjunction with this caching strategy.\n * @param {Object} options.fetchOptions Values passed along to the\n * [`init`](https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/fetch#Parameters)\n * of all fetch() requests made by this strategy.\n * @param {Object} options.matchOptions [`CacheQueryOptions`](https://w3c.github.io/ServiceWorker/#dictdef-cachequeryoptions)\n */\n constructor(options = {}) {\n this._cacheName = cacheNames.getRuntimeName(options.cacheName);\n this._plugins = options.plugins || [];\n\n if (options.plugins) {\n let isUsingCacheWillUpdate =\n options.plugins.some((plugin) => !!plugin.cacheWillUpdate);\n this._plugins = isUsingCacheWillUpdate ?\n options.plugins : [cacheOkAndOpaquePlugin, ...options.plugins];\n } else {\n // No plugins passed in, use the default plugin.\n this._plugins = [cacheOkAndOpaquePlugin];\n }\n\n this._fetchOptions = options.fetchOptions || null;\n this._matchOptions = options.matchOptions || null;\n }\n\n /**\n * This method will perform a request strategy and follows an API that\n * will work with the\n * [Workbox Router]{@link workbox.routing.Router}.\n *\n * @param {Object} options\n * @param {Request} options.request The request to run this strategy for.\n * @param {Event} [options.event] The event that triggered the request.\n * @return {Promise<Response>}\n */\n async handle({event, request}) {\n return this.makeRequest({\n event,\n request: request || event.request,\n });\n }\n /**\n * This method can be used to perform a make a standalone request outside the\n * context of the [Workbox Router]{@link workbox.routing.Router}.\n *\n * See \"[Advanced Recipes](https://developers.google.com/web/tools/workbox/guides/advanced-recipes#make-requests)\"\n * for more usage information.\n *\n * @param {Object} options\n * @param {Request|string} options.request Either a\n * [`Request`]{@link https://developer.mozilla.org/en-US/docs/Web/API/Request}\n * object, or a string URL, corresponding to the request to be made.\n * @param {FetchEvent} [options.event] If provided, `event.waitUntil()` will\n * be called automatically to extend the service worker's lifetime.\n * @return {Promise<Response>}\n */\n async makeRequest({event, request}) {\n const logs = [];\n\n if (typeof request === 'string') {\n request = new Request(request);\n }\n\n if (process.env.NODE_ENV !== 'production') {\n assert.isInstance(request, Request, {\n moduleName: 'workbox-strategies',\n className: 'StaleWhileRevalidate',\n funcName: 'handle',\n paramName: 'request',\n });\n }\n\n const fetchAndCachePromise = this._getFromNetwork({request, event});\n\n let response = await cacheWrapper.match({\n cacheName: this._cacheName,\n request,\n event,\n matchOptions: this._matchOptions,\n plugins: this._plugins,\n });\n let error;\n if (response) {\n if (process.env.NODE_ENV !== 'production') {\n logs.push(`Found a cached response in the '${this._cacheName}'` +\n ` cache. Will update with the network response in the background.`);\n }\n\n if (event) {\n try {\n event.waitUntil(fetchAndCachePromise);\n } catch (error) {\n if (process.env.NODE_ENV !== 'production') {\n logger.warn(`Unable to ensure service worker stays alive when ` +\n `updating cache for '${getFriendlyURL(request.url)}'.`);\n }\n }\n }\n } else {\n if (process.env.NODE_ENV !== 'production') {\n logs.push(`No response found in the '${this._cacheName}' cache. ` +\n `Will wait for the network response.`);\n }\n try {\n response = await fetchAndCachePromise;\n } catch (err) {\n error = err;\n }\n }\n\n if (process.env.NODE_ENV !== 'production') {\n logger.groupCollapsed(\n messages.strategyStart('StaleWhileRevalidate', request));\n for (let log of logs) {\n logger.log(log);\n }\n messages.printFinalResponse(response);\n logger.groupEnd();\n }\n\n if (!response) {\n throw new WorkboxError('no-response', {url: request.url, error});\n }\n return response;\n }\n\n /**\n * @param {Object} options\n * @param {Request} options.request\n * @param {Event} [options.event]\n * @return {Promise<Response>}\n *\n * @private\n */\n async _getFromNetwork({request, event}) {\n const response = await fetchWrapper.fetch({\n request,\n event,\n fetchOptions: this._fetchOptions,\n plugins: this._plugins,\n });\n\n const cachePutPromise = cacheWrapper.put({\n cacheName: this._cacheName,\n request,\n response: response.clone(),\n event,\n plugins: this._plugins,\n });\n\n if (event) {\n try {\n event.waitUntil(cachePutPromise);\n } catch (error) {\n if (process.env.NODE_ENV !== 'production') {\n logger.warn(`Unable to ensure service worker stays alive when ` +\n `updating cache for '${getFriendlyURL(request.url)}'.`);\n }\n }\n }\n\n return response;\n }\n}\n\nexport {StaleWhileRevalidate};\n","/*\n Copyright 2018 Google LLC\n\n Use of this source code is governed by an MIT-style\n license that can be found in the LICENSE file or at\n https://opensource.org/licenses/MIT.\n*/\n\nimport {logger} from 'workbox-core/_private/logger.mjs';\nimport {CacheFirst} from './CacheFirst.mjs';\nimport {CacheOnly} from './CacheOnly.mjs';\nimport {NetworkFirst} from './NetworkFirst.mjs';\nimport {NetworkOnly} from './NetworkOnly.mjs';\nimport {StaleWhileRevalidate} from './StaleWhileRevalidate.mjs';\nimport './_version.mjs';\n\n\nconst mapping = {\n cacheFirst: CacheFirst,\n cacheOnly: CacheOnly,\n networkFirst: NetworkFirst,\n networkOnly: NetworkOnly,\n staleWhileRevalidate: StaleWhileRevalidate,\n};\n\nconst deprecate = (strategy) => {\n const StrategyCtr = mapping[strategy];\n\n return (options) => {\n if (process.env.NODE_ENV !== 'production') {\n const strategyCtrName = strategy[0].toUpperCase() + strategy.slice(1);\n logger.warn(`The 'workbox.strategies.${strategy}()' function has been ` +\n `deprecated and will be removed in a future version of Workbox.\\n` +\n `Please use 'new workbox.strategies.${strategyCtrName}()' instead.`);\n }\n return new StrategyCtr(options);\n };\n};\n\n/**\n * @function workbox.strategies.cacheFirst\n * @param {Object} options See the {@link workbox.strategies.CacheFirst}\n * constructor for more info.\n * @deprecated since v4.0.0\n */\nconst cacheFirst = deprecate('cacheFirst');\n\n/**\n * @function workbox.strategies.cacheOnly\n * @param {Object} options See the {@link workbox.strategies.CacheOnly}\n * constructor for more info.\n * @deprecated since v4.0.0\n */\nconst cacheOnly = deprecate('cacheOnly');\n\n/**\n * @function workbox.strategies.networkFirst\n * @param {Object} options See the {@link workbox.strategies.NetworkFirst}\n * constructor for more info.\n * @deprecated since v4.0.0\n */\nconst networkFirst = deprecate('networkFirst');\n\n/**\n * @function workbox.strategies.networkOnly\n * @param {Object} options See the {@link workbox.strategies.NetworkOnly}\n * constructor for more info.\n * @deprecated since v4.0.0\n */\nconst networkOnly = deprecate('networkOnly');\n\n/**\n * @function workbox.strategies.staleWhileRevalidate\n * @param {Object} options See the\n * {@link workbox.strategies.StaleWhileRevalidate} constructor for more info.\n * @deprecated since v4.0.0\n */\nconst staleWhileRevalidate = deprecate('staleWhileRevalidate');\n\n/**\n * There are common caching strategies that most service workers will need\n * and use. This module provides simple implementations of these strategies.\n *\n * @namespace workbox.strategies\n */\n\nexport {\n CacheFirst,\n CacheOnly,\n NetworkFirst,\n NetworkOnly,\n StaleWhileRevalidate,\n\n // Deprecated...\n cacheFirst,\n cacheOnly,\n networkFirst,\n networkOnly,\n 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