diff --git a/dev-dist/registerSW.js b/dev-dist/registerSW.js new file mode 100644 index 0000000..1d5625f --- /dev/null +++ b/dev-dist/registerSW.js @@ -0,0 +1 @@ +if('serviceWorker' in navigator) navigator.serviceWorker.register('/dev-sw.js?dev-sw', { scope: '/', type: 'classic' }) \ No newline at end of file diff --git a/dev-dist/sw.js b/dev-dist/sw.js new file mode 100644 index 0000000..7d70be1 --- /dev/null +++ b/dev-dist/sw.js @@ -0,0 +1 @@ +if(!self.define){let e,t={};const i=(i,n)=>(i=new URL(i+".js",n).href,t[i]||new Promise((t=>{if("document"in self){const e=document.createElement("script");e.src=i,e.onload=t,document.head.appendChild(e)}else e=i,importScripts(i),t()})).then((()=>{let e=t[i];if(!e)throw new Error(`Module ${i} didn’t register its module`);return e})));self.define=(n,s)=>{const r=e||("document"in self?document.currentScript.src:"")||location.href;if(t[r])return;let o={};const l=e=>i(e,r),c={module:{uri:r},exports:o,require:l};t[r]=Promise.all(n.map((e=>c[e]||l(e)))).then((e=>(s(...e),o)))}}define(["./workbox-b8fc7838"],(function(e){"use strict";self.skipWaiting(),e.clientsClaim(),e.precacheAndRoute([{url:"registerSW.js",revision:"3ca0b8505b4bec776b69afdba2768812"},{revision:null,url:"index.html"}],{}),e.cleanupOutdatedCaches(),e.registerRoute(new e.NavigationRoute(e.createHandlerBoundToURL("index.html"),{allowlist:[/^\/$/]})),e.registerRoute(/^https:\/\/wiki.td2.info.pl\/images\/thumb\/.*/,new e.NetworkFirst({cacheName:"sceneries-cache",plugins:[new e.ExpirationPlugin({maxEntries:400,maxAgeSeconds:31536e3}),new e.CacheableResponsePlugin({statuses:[0,200]})]}),"GET")})); diff --git a/dev-dist/workbox-320bd7bf.js b/dev-dist/workbox-320bd7bf.js new file mode 100644 index 0000000..f7a95ab --- /dev/null +++ b/dev-dist/workbox-320bd7bf.js @@ -0,0 +1,4709 @@ +define(['exports'], (function (exports) { 'use strict'; + + // @ts-ignore + try { + self['workbox:core:6.5.3'] && _(); + } catch (e) {} + + /* + Copyright 2019 Google LLC + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + const logger = (() => { + // Don't overwrite this value if it's already set. + // See https://github.com/GoogleChrome/workbox/pull/2284#issuecomment-560470923 + if (!('__WB_DISABLE_DEV_LOGS' in self)) { + self.__WB_DISABLE_DEV_LOGS = false; + } + let inGroup = false; + const methodToColorMap = { + debug: `#7f8c8d`, + log: `#2ecc71`, + warn: `#f39c12`, + error: `#c0392b`, + groupCollapsed: `#3498db`, + groupEnd: null // No colored prefix on groupEnd + }; + + const print = function (method, args) { + if (self.__WB_DISABLE_DEV_LOGS) { + return; + } + if (method === 'groupCollapsed') { + // Safari doesn't print all console.groupCollapsed() arguments: + // https://bugs.webkit.org/show_bug.cgi?id=182754 + if (/^((?!chrome|android).)*safari/i.test(navigator.userAgent)) { + console[method](...args); + return; + } + } + const styles = [`background: ${methodToColorMap[method]}`, `border-radius: 0.5em`, `color: white`, `font-weight: bold`, `padding: 2px 0.5em`]; + // When in a group, the workbox prefix is not displayed. + const logPrefix = inGroup ? [] : ['%cworkbox', styles.join(';')]; + console[method](...logPrefix, ...args); + if (method === 'groupCollapsed') { + inGroup = true; + } + if (method === 'groupEnd') { + inGroup = false; + } + }; + // eslint-disable-next-line @typescript-eslint/ban-types + const api = {}; + const loggerMethods = Object.keys(methodToColorMap); + for (const key of loggerMethods) { + const method = key; + api[method] = (...args) => { + print(method, args); + }; + } + return api; + })(); + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + const messages$1 = { + 'invalid-value': ({ + paramName, + validValueDescription, + value + }) => { + if (!paramName || !validValueDescription) { + throw new Error(`Unexpected input to 'invalid-value' error.`); + } + return `The '${paramName}' parameter was given a value with an ` + `unexpected value. ${validValueDescription} Received a value of ` + `${JSON.stringify(value)}.`; + }, + 'not-an-array': ({ + moduleName, + className, + funcName, + paramName + }) => { + if (!moduleName || !className || !funcName || !paramName) { + throw new Error(`Unexpected input to 'not-an-array' error.`); + } + return `The parameter '${paramName}' passed into ` + `'${moduleName}.${className}.${funcName}()' must be an array.`; + }, + 'incorrect-type': ({ + expectedType, + paramName, + moduleName, + className, + funcName + }) => { + if (!expectedType || !paramName || !moduleName || !funcName) { + throw new Error(`Unexpected input to 'incorrect-type' error.`); + } + const classNameStr = className ? `${className}.` : ''; + return `The parameter '${paramName}' passed into ` + `'${moduleName}.${classNameStr}` + `${funcName}()' must be of type ${expectedType}.`; + }, + 'incorrect-class': ({ + expectedClassName, + paramName, + moduleName, + className, + funcName, + isReturnValueProblem + }) => { + if (!expectedClassName || !moduleName || !funcName) { + throw new Error(`Unexpected input to 'incorrect-class' error.`); + } + const classNameStr = className ? `${className}.` : ''; + if (isReturnValueProblem) { + return `The return value from ` + `'${moduleName}.${classNameStr}${funcName}()' ` + `must be an instance of class ${expectedClassName}.`; + } + return `The parameter '${paramName}' passed into ` + `'${moduleName}.${classNameStr}${funcName}()' ` + `must be an instance of class ${expectedClassName}.`; + }, + 'missing-a-method': ({ + expectedMethod, + paramName, + moduleName, + className, + funcName + }) => { + if (!expectedMethod || !paramName || !moduleName || !className || !funcName) { + throw new Error(`Unexpected input to 'missing-a-method' error.`); + } + return `${moduleName}.${className}.${funcName}() expected the ` + `'${paramName}' parameter to expose a '${expectedMethod}' method.`; + }, + 'add-to-cache-list-unexpected-type': ({ + entry + }) => { + return `An unexpected entry was passed to ` + `'workbox-precaching.PrecacheController.addToCacheList()' The entry ` + `'${JSON.stringify(entry)}' isn't supported. You must supply an array of ` + `strings with one or more characters, objects with a url property or ` + `Request objects.`; + }, + 'add-to-cache-list-conflicting-entries': ({ + firstEntry, + secondEntry + }) => { + if (!firstEntry || !secondEntry) { + throw new Error(`Unexpected input to ` + `'add-to-cache-list-duplicate-entries' error.`); + } + return `Two of the entries passed to ` + `'workbox-precaching.PrecacheController.addToCacheList()' had the URL ` + `${firstEntry} but different revision details. Workbox is ` + `unable to cache and version the asset correctly. Please remove one ` + `of the entries.`; + }, + 'plugin-error-request-will-fetch': ({ + thrownErrorMessage + }) => { + if (!thrownErrorMessage) { + throw new Error(`Unexpected input to ` + `'plugin-error-request-will-fetch', error.`); + } + return `An error was thrown by a plugins 'requestWillFetch()' method. ` + `The thrown error message was: '${thrownErrorMessage}'.`; + }, + 'invalid-cache-name': ({ + cacheNameId, + value + }) => { + if (!cacheNameId) { + throw new Error(`Expected a 'cacheNameId' for error 'invalid-cache-name'`); + } + return `You must provide a name containing at least one character for ` + `setCacheDetails({${cacheNameId}: '...'}). Received a value of ` + `'${JSON.stringify(value)}'`; + }, + 'unregister-route-but-not-found-with-method': ({ + method + }) => { + if (!method) { + throw new Error(`Unexpected input to ` + `'unregister-route-but-not-found-with-method' error.`); + } + return `The route you're trying to unregister was not previously ` + `registered for the method type '${method}'.`; + }, + 'unregister-route-route-not-registered': () => { + return `The route you're trying to unregister was not previously ` + `registered.`; + }, + 'queue-replay-failed': ({ + name + }) => { + return `Replaying the background sync queue '${name}' failed.`; + }, + 'duplicate-queue-name': ({ + name + }) => { + return `The Queue name '${name}' is already being used. ` + `All instances of backgroundSync.Queue must be given unique names.`; + }, + 'expired-test-without-max-age': ({ + methodName, + paramName + }) => { + return `The '${methodName}()' method can only be used when the ` + `'${paramName}' is used in the constructor.`; + }, + 'unsupported-route-type': ({ + moduleName, + className, + funcName, + paramName + }) => { + return `The supplied '${paramName}' parameter was an unsupported type. ` + `Please check the docs for ${moduleName}.${className}.${funcName} for ` + `valid input types.`; + }, + 'not-array-of-class': ({ + value, + expectedClass, + moduleName, + className, + funcName, + paramName + }) => { + return `The supplied '${paramName}' parameter must be an array of ` + `'${expectedClass}' objects. Received '${JSON.stringify(value)},'. ` + `Please check the call to ${moduleName}.${className}.${funcName}() ` + `to fix the issue.`; + }, + 'max-entries-or-age-required': ({ + moduleName, + className, + funcName + }) => { + return `You must define either config.maxEntries or config.maxAgeSeconds` + `in ${moduleName}.${className}.${funcName}`; + }, + 'statuses-or-headers-required': ({ + moduleName, + className, + funcName + }) => { + return `You must define either config.statuses or config.headers` + `in ${moduleName}.${className}.${funcName}`; + }, + 'invalid-string': ({ + moduleName, + funcName, + paramName + }) => { + if (!paramName || !moduleName || !funcName) { + throw new Error(`Unexpected input to 'invalid-string' error.`); + } + return `When using strings, the '${paramName}' parameter must start with ` + `'http' (for cross-origin matches) or '/' (for same-origin matches). ` + `Please see the docs for ${moduleName}.${funcName}() for ` + `more info.`; + }, + 'channel-name-required': () => { + return `You must provide a channelName to construct a ` + `BroadcastCacheUpdate instance.`; + }, + 'invalid-responses-are-same-args': () => { + return `The arguments passed into responsesAreSame() appear to be ` + `invalid. Please ensure valid Responses are used.`; + }, + 'expire-custom-caches-only': () => { + return `You must provide a 'cacheName' property when using the ` + `expiration plugin with a runtime caching strategy.`; + }, + 'unit-must-be-bytes': ({ + normalizedRangeHeader + }) => { + if (!normalizedRangeHeader) { + throw new Error(`Unexpected input to 'unit-must-be-bytes' error.`); + } + return `The 'unit' portion of the Range header must be set to 'bytes'. ` + `The Range header provided was "${normalizedRangeHeader}"`; + }, + 'single-range-only': ({ + normalizedRangeHeader + }) => { + if (!normalizedRangeHeader) { + throw new Error(`Unexpected input to 'single-range-only' error.`); + } + return `Multiple ranges are not supported. Please use a single start ` + `value, and optional end value. The Range header provided was ` + `"${normalizedRangeHeader}"`; + }, + 'invalid-range-values': ({ + normalizedRangeHeader + }) => { + if (!normalizedRangeHeader) { + throw new Error(`Unexpected input to 'invalid-range-values' error.`); + } + return `The Range header is missing both start and end values. At least ` + `one of those values is needed. The Range header provided was ` + `"${normalizedRangeHeader}"`; + }, + 'no-range-header': () => { + return `No Range header was found in the Request provided.`; + }, + 'range-not-satisfiable': ({ + size, + start, + end + }) => { + return `The start (${start}) and end (${end}) values in the Range are ` + `not satisfiable by the cached response, which is ${size} bytes.`; + }, + 'attempt-to-cache-non-get-request': ({ + url, + method + }) => { + return `Unable to cache '${url}' because it is a '${method}' request and ` + `only 'GET' requests can be cached.`; + }, + 'cache-put-with-no-response': ({ + url + }) => { + return `There was an attempt to cache '${url}' but the response was not ` + `defined.`; + }, + 'no-response': ({ + url, + error + }) => { + let message = `The strategy could not generate a response for '${url}'.`; + if (error) { + message += ` The underlying error is ${error}.`; + } + return message; + }, + 'bad-precaching-response': ({ + url, + status + }) => { + return `The precaching request for '${url}' failed` + (status ? ` with an HTTP status of ${status}.` : `.`); + }, + 'non-precached-url': ({ + url + }) => { + return `createHandlerBoundToURL('${url}') was called, but that URL is ` + `not precached. Please pass in a URL that is precached instead.`; + }, + 'add-to-cache-list-conflicting-integrities': ({ + url + }) => { + return `Two of the entries passed to ` + `'workbox-precaching.PrecacheController.addToCacheList()' had the URL ` + `${url} with different integrity values. Please remove one of them.`; + }, + 'missing-precache-entry': ({ + cacheName, + url + }) => { + return `Unable to find a precached response in ${cacheName} for ${url}.`; + }, + 'cross-origin-copy-response': ({ + origin + }) => { + return `workbox-core.copyResponse() can only be used with same-origin ` + `responses. It was passed a response with origin ${origin}.`; + }, + 'opaque-streams-source': ({ + type + }) => { + const message = `One of the workbox-streams sources resulted in an ` + `'${type}' response.`; + if (type === 'opaqueredirect') { + return `${message} Please do not use a navigation request that results ` + `in a redirect as a source.`; + } + return `${message} Please ensure your sources are CORS-enabled.`; + } + }; + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + const generatorFunction = (code, details = {}) => { + const message = messages$1[code]; + if (!message) { + throw new Error(`Unable to find message for code '${code}'.`); + } + return message(details); + }; + const messageGenerator = generatorFunction; + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * Workbox errors should be thrown with this class. + * This allows use to ensure the type easily in tests, + * helps developers identify errors from workbox + * easily and allows use to optimise error + * messages correctly. + * + * @private + */ + class WorkboxError extends Error { + /** + * + * @param {string} errorCode The error code that + * identifies this particular error. + * @param {Object=} details Any relevant arguments + * that will help developers identify issues should + * be added as a key on the context object. + */ + constructor(errorCode, details) { + const message = messageGenerator(errorCode, details); + super(message); + this.name = errorCode; + this.details = details; + } + } + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /* + * This method throws if the supplied value is not an array. + * The destructed values are required to produce a meaningful error for users. + * The destructed and restructured object is so it's clear what is + * needed. + */ + const isArray = (value, details) => { + if (!Array.isArray(value)) { + throw new WorkboxError('not-an-array', details); + } + }; + const hasMethod = (object, expectedMethod, details) => { + const type = typeof object[expectedMethod]; + if (type !== 'function') { + details['expectedMethod'] = expectedMethod; + throw new WorkboxError('missing-a-method', details); + } + }; + const isType = (object, expectedType, details) => { + if (typeof object !== expectedType) { + details['expectedType'] = expectedType; + throw new WorkboxError('incorrect-type', details); + } + }; + const isInstance = (object, + // Need the general type to do the check later. + // eslint-disable-next-line @typescript-eslint/ban-types + expectedClass, details) => { + if (!(object instanceof expectedClass)) { + details['expectedClassName'] = expectedClass.name; + throw new WorkboxError('incorrect-class', details); + } + }; + const isOneOf = (value, validValues, details) => { + if (!validValues.includes(value)) { + details['validValueDescription'] = `Valid values are ${JSON.stringify(validValues)}.`; + throw new WorkboxError('invalid-value', details); + } + }; + const isArrayOfClass = (value, + // Need general type to do check later. + expectedClass, + // eslint-disable-line + details) => { + const error = new WorkboxError('not-array-of-class', details); + if (!Array.isArray(value)) { + throw error; + } + for (const item of value) { + if (!(item instanceof expectedClass)) { + throw error; + } + } + }; + const finalAssertExports = { + hasMethod, + isArray, + isInstance, + isOneOf, + isType, + isArrayOfClass + }; + + // @ts-ignore + try { + self['workbox:routing:6.5.3'] && _(); + } catch (e) {} + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * The default HTTP method, 'GET', used when there's no specific method + * configured for a route. + * + * @type {string} + * + * @private + */ + const defaultMethod = 'GET'; + /** + * The list of valid HTTP methods associated with requests that could be routed. + * + * @type {Array} + * + * @private + */ + const validMethods = ['DELETE', 'GET', 'HEAD', 'PATCH', 'POST', 'PUT']; + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * @param {function()|Object} handler Either a function, or an object with a + * 'handle' method. + * @return {Object} An object with a handle method. + * + * @private + */ + const normalizeHandler = handler => { + if (handler && typeof handler === 'object') { + { + finalAssertExports.hasMethod(handler, 'handle', { + moduleName: 'workbox-routing', + className: 'Route', + funcName: 'constructor', + paramName: 'handler' + }); + } + return handler; + } else { + { + finalAssertExports.isType(handler, 'function', { + moduleName: 'workbox-routing', + className: 'Route', + funcName: 'constructor', + paramName: 'handler' + }); + } + return { + handle: handler + }; + } + }; + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * A `Route` consists of a pair of callback functions, "match" and "handler". + * The "match" callback determine if a route should be used to "handle" a + * request by returning a non-falsy value if it can. The "handler" callback + * is called when there is a match and should return a Promise that resolves + * to a `Response`. + * + * @memberof workbox-routing + */ + class Route { + /** + * Constructor for Route class. + * + * @param {workbox-routing~matchCallback} match + * A callback function that determines whether the route matches a given + * `fetch` event by returning a non-falsy value. + * @param {workbox-routing~handlerCallback} handler A callback + * function that returns a Promise resolving to a Response. + * @param {string} [method='GET'] The HTTP method to match the Route + * against. + */ + constructor(match, handler, method = defaultMethod) { + { + finalAssertExports.isType(match, 'function', { + moduleName: 'workbox-routing', + className: 'Route', + funcName: 'constructor', + paramName: 'match' + }); + if (method) { + finalAssertExports.isOneOf(method, validMethods, { + paramName: 'method' + }); + } + } + // These values are referenced directly by Router so cannot be + // altered by minificaton. + this.handler = normalizeHandler(handler); + this.match = match; + this.method = method; + } + /** + * + * @param {workbox-routing-handlerCallback} handler A callback + * function that returns a Promise resolving to a Response + */ + setCatchHandler(handler) { + this.catchHandler = normalizeHandler(handler); + } + } + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * RegExpRoute makes it easy to create a regular expression based + * {@link workbox-routing.Route}. + * + * For same-origin requests the RegExp only needs to match part of the URL. For + * requests against third-party servers, you must define a RegExp that matches + * the start of the URL. + * + * @memberof workbox-routing + * @extends workbox-routing.Route + */ + class RegExpRoute extends Route { + /** + * If the regular expression contains + * [capture groups]{@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp#grouping-back-references}, + * the captured values will be passed to the + * {@link workbox-routing~handlerCallback} `params` + * argument. + * + * @param {RegExp} regExp The regular expression to match against URLs. + * @param {workbox-routing~handlerCallback} handler A callback + * function that returns a Promise resulting in a Response. + * @param {string} [method='GET'] The HTTP method to match the Route + * against. + */ + constructor(regExp, handler, method) { + { + finalAssertExports.isInstance(regExp, RegExp, { + moduleName: 'workbox-routing', + className: 'RegExpRoute', + funcName: 'constructor', + paramName: 'pattern' + }); + } + const match = ({ + url + }) => { + const result = regExp.exec(url.href); + // Return immediately if there's no match. + if (!result) { + return; + } + // Require that the match start at the first character in the URL string + // if it's a cross-origin request. + // See https://github.com/GoogleChrome/workbox/issues/281 for the context + // behind this behavior. + if (url.origin !== location.origin && result.index !== 0) { + { + logger.debug(`The regular expression '${regExp.toString()}' only partially matched ` + `against the cross-origin URL '${url.toString()}'. RegExpRoute's will only ` + `handle cross-origin requests if they match the entire URL.`); + } + return; + } + // If the route matches, but there aren't any capture groups defined, then + // this will return [], which is truthy and therefore sufficient to + // indicate a match. + // If there are capture groups, then it will return their values. + return result.slice(1); + }; + super(match, handler, method); + } + } + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + const getFriendlyURL = url => { + const urlObj = new URL(String(url), location.href); + // See https://github.com/GoogleChrome/workbox/issues/2323 + // We want to include everything, except for the origin if it's same-origin. + return urlObj.href.replace(new RegExp(`^${location.origin}`), ''); + }; + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * The Router can be used to process a `FetchEvent` using one or more + * {@link workbox-routing.Route}, responding with a `Response` if + * a matching route exists. + * + * If no route matches a given a request, the Router will use a "default" + * handler if one is defined. + * + * Should the matching Route throw an error, the Router will use a "catch" + * handler if one is defined to gracefully deal with issues and respond with a + * Request. + * + * If a request matches multiple routes, the **earliest** registered route will + * be used to respond to the request. + * + * @memberof workbox-routing + */ + class Router { + /** + * Initializes a new Router. + */ + constructor() { + this._routes = new Map(); + this._defaultHandlerMap = new Map(); + } + /** + * @return {Map>} routes A `Map` of HTTP + * method name ('GET', etc.) to an array of all the corresponding `Route` + * instances that are registered. + */ + get routes() { + return this._routes; + } + /** + * Adds a fetch event listener to respond to events when a route matches + * the event's request. + */ + addFetchListener() { + // See https://github.com/Microsoft/TypeScript/issues/28357#issuecomment-436484705 + self.addEventListener('fetch', event => { + const { + request + } = event; + const responsePromise = this.handleRequest({ + request, + event + }); + if (responsePromise) { + event.respondWith(responsePromise); + } + }); + } + /** + * Adds a message event listener for URLs to cache from the window. + * This is useful to cache resources loaded on the page prior to when the + * service worker started controlling it. + * + * The format of the message data sent from the window should be as follows. + * Where the `urlsToCache` array may consist of URL strings or an array of + * URL string + `requestInit` object (the same as you'd pass to `fetch()`). + * + * ``` + * { + * type: 'CACHE_URLS', + * payload: { + * urlsToCache: [ + * './script1.js', + * './script2.js', + * ['./script3.js', {mode: 'no-cors'}], + * ], + * }, + * } + * ``` + */ + addCacheListener() { + // See https://github.com/Microsoft/TypeScript/issues/28357#issuecomment-436484705 + self.addEventListener('message', event => { + // event.data is type 'any' + // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access + if (event.data && event.data.type === 'CACHE_URLS') { + // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment + const { + payload + } = event.data; + { + logger.debug(`Caching URLs from the window`, payload.urlsToCache); + } + const requestPromises = Promise.all(payload.urlsToCache.map(entry => { + if (typeof entry === 'string') { + entry = [entry]; + } + const request = new Request(...entry); + return this.handleRequest({ + request, + event + }); + // TODO(philipwalton): TypeScript errors without this typecast for + // some reason (probably a bug). The real type here should work but + // doesn't: `Array | undefined>`. + })); // TypeScript + event.waitUntil(requestPromises); + // If a MessageChannel was used, reply to the message on success. + if (event.ports && event.ports[0]) { + void requestPromises.then(() => event.ports[0].postMessage(true)); + } + } + }); + } + /** + * Apply the routing rules to a FetchEvent object to get a Response from an + * appropriate Route's handler. + * + * @param {Object} options + * @param {Request} options.request The request to handle. + * @param {ExtendableEvent} options.event The event that triggered the + * request. + * @return {Promise|undefined} A promise is returned if a + * registered route can handle the request. If there is no matching + * route and there's no `defaultHandler`, `undefined` is returned. + */ + handleRequest({ + request, + event + }) { + { + finalAssertExports.isInstance(request, Request, { + moduleName: 'workbox-routing', + className: 'Router', + funcName: 'handleRequest', + paramName: 'options.request' + }); + } + const url = new URL(request.url, location.href); + if (!url.protocol.startsWith('http')) { + { + logger.debug(`Workbox Router only supports URLs that start with 'http'.`); + } + return; + } + const sameOrigin = url.origin === location.origin; + const { + params, + route + } = this.findMatchingRoute({ + event, + request, + sameOrigin, + url + }); + let handler = route && route.handler; + const debugMessages = []; + { + if (handler) { + debugMessages.push([`Found a route to handle this request:`, route]); + if (params) { + debugMessages.push([`Passing the following params to the route's handler:`, params]); + } + } + } + // If we don't have a handler because there was no matching route, then + // fall back to defaultHandler if that's defined. + const method = request.method; + if (!handler && this._defaultHandlerMap.has(method)) { + { + debugMessages.push(`Failed to find a matching route. Falling ` + `back to the default handler for ${method}.`); + } + handler = this._defaultHandlerMap.get(method); + } + if (!handler) { + { + // No handler so Workbox will do nothing. If logs is set of debug + // i.e. verbose, we should print out this information. + logger.debug(`No route found for: ${getFriendlyURL(url)}`); + } + return; + } + { + // We have a handler, meaning Workbox is going to handle the route. + // print the routing details to the console. + logger.groupCollapsed(`Router is responding to: ${getFriendlyURL(url)}`); + debugMessages.forEach(msg => { + if (Array.isArray(msg)) { + logger.log(...msg); + } else { + logger.log(msg); + } + }); + logger.groupEnd(); + } + // Wrap in try and catch in case the handle method throws a synchronous + // error. It should still callback to the catch handler. + let responsePromise; + try { + responsePromise = handler.handle({ + url, + request, + event, + params + }); + } catch (err) { + responsePromise = Promise.reject(err); + } + // Get route's catch handler, if it exists + const catchHandler = route && route.catchHandler; + if (responsePromise instanceof Promise && (this._catchHandler || catchHandler)) { + responsePromise = responsePromise.catch(async err => { + // If there's a route catch handler, process that first + if (catchHandler) { + { + // Still include URL here as it will be async from the console group + // and may not make sense without the URL + logger.groupCollapsed(`Error thrown when responding to: ` + ` ${getFriendlyURL(url)}. Falling back to route's Catch Handler.`); + logger.error(`Error thrown by:`, route); + logger.error(err); + logger.groupEnd(); + } + try { + return await catchHandler.handle({ + url, + request, + event, + params + }); + } catch (catchErr) { + if (catchErr instanceof Error) { + err = catchErr; + } + } + } + if (this._catchHandler) { + { + // Still include URL here as it will be async from the console group + // and may not make sense without the URL + logger.groupCollapsed(`Error thrown when responding to: ` + ` ${getFriendlyURL(url)}. Falling back to global Catch Handler.`); + logger.error(`Error thrown by:`, route); + logger.error(err); + logger.groupEnd(); + } + return this._catchHandler.handle({ + url, + request, + event + }); + } + throw err; + }); + } + return responsePromise; + } + /** + * Checks a request and URL (and optionally an event) against the list of + * registered routes, and if there's a match, returns the corresponding + * route along with any params generated by the match. + * + * @param {Object} options + * @param {URL} options.url + * @param {boolean} options.sameOrigin The result of comparing `url.origin` + * against the current origin. + * @param {Request} options.request The request to match. + * @param {Event} options.event The corresponding event. + * @return {Object} An object with `route` and `params` properties. + * They are populated if a matching route was found or `undefined` + * otherwise. + */ + findMatchingRoute({ + url, + sameOrigin, + request, + event + }) { + const routes = this._routes.get(request.method) || []; + for (const route of routes) { + let params; + // route.match returns type any, not possible to change right now. + // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment + const matchResult = route.match({ + url, + sameOrigin, + request, + event + }); + if (matchResult) { + { + // Warn developers that using an async matchCallback is almost always + // not the right thing to do. + if (matchResult instanceof Promise) { + logger.warn(`While routing ${getFriendlyURL(url)}, an async ` + `matchCallback function was used. Please convert the ` + `following route to use a synchronous matchCallback function:`, route); + } + } + // See https://github.com/GoogleChrome/workbox/issues/2079 + // eslint-disable-next-line @typescript-eslint/no-unsafe-assignment + params = matchResult; + if (Array.isArray(params) && params.length === 0) { + // Instead of passing an empty array in as params, use undefined. + params = undefined; + } else if (matchResult.constructor === Object && + // eslint-disable-line + Object.keys(matchResult).length === 0) { + // Instead of passing an empty object in as params, use undefined. + params = undefined; + } else if (typeof matchResult === 'boolean') { + // For the boolean value true (rather than just something truth-y), + // don't set params. + // See https://github.com/GoogleChrome/workbox/pull/2134#issuecomment-513924353 + params = undefined; + } + // Return early if have a match. + return { + route, + params + }; + } + } + // If no match was found above, return and empty object. + return {}; + } + /** + * Define a default `handler` that's called when no routes explicitly + * match the incoming request. + * + * Each HTTP method ('GET', 'POST', etc.) gets its own default handler. + * + * Without a default handler, unmatched requests will go against the + * network as if there were no service worker present. + * + * @param {workbox-routing~handlerCallback} handler A callback + * function that returns a Promise resulting in a Response. + * @param {string} [method='GET'] The HTTP method to associate with this + * default handler. Each method has its own default. + */ + setDefaultHandler(handler, method = defaultMethod) { + this._defaultHandlerMap.set(method, normalizeHandler(handler)); + } + /** + * If a Route throws an error while handling a request, this `handler` + * will be called and given a chance to provide a response. + * + * @param {workbox-routing~handlerCallback} handler A callback + * function that returns a Promise resulting in a Response. + */ + setCatchHandler(handler) { + this._catchHandler = normalizeHandler(handler); + } + /** + * Registers a route with the router. + * + * @param {workbox-routing.Route} route The route to register. + */ + registerRoute(route) { + { + finalAssertExports.isType(route, 'object', { + moduleName: 'workbox-routing', + className: 'Router', + funcName: 'registerRoute', + paramName: 'route' + }); + finalAssertExports.hasMethod(route, 'match', { + moduleName: 'workbox-routing', + className: 'Router', + funcName: 'registerRoute', + paramName: 'route' + }); + finalAssertExports.isType(route.handler, 'object', { + moduleName: 'workbox-routing', + className: 'Router', + funcName: 'registerRoute', + paramName: 'route' + }); + finalAssertExports.hasMethod(route.handler, 'handle', { + moduleName: 'workbox-routing', + className: 'Router', + funcName: 'registerRoute', + paramName: 'route.handler' + }); + finalAssertExports.isType(route.method, 'string', { + moduleName: 'workbox-routing', + className: 'Router', + funcName: 'registerRoute', + paramName: 'route.method' + }); + } + if (!this._routes.has(route.method)) { + this._routes.set(route.method, []); + } + // Give precedence to all of the earlier routes by adding this additional + // route to the end of the array. + this._routes.get(route.method).push(route); + } + /** + * Unregisters a route with the router. + * + * @param {workbox-routing.Route} route The route to unregister. + */ + unregisterRoute(route) { + if (!this._routes.has(route.method)) { + throw new WorkboxError('unregister-route-but-not-found-with-method', { + method: route.method + }); + } + const routeIndex = this._routes.get(route.method).indexOf(route); + if (routeIndex > -1) { + this._routes.get(route.method).splice(routeIndex, 1); + } else { + throw new WorkboxError('unregister-route-route-not-registered'); + } + } + } + + /* + Copyright 2019 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + let defaultRouter; + /** + * Creates a new, singleton Router instance if one does not exist. If one + * does already exist, that instance is returned. + * + * @private + * @return {Router} + */ + const getOrCreateDefaultRouter = () => { + if (!defaultRouter) { + defaultRouter = new Router(); + // The helpers that use the default Router assume these listeners exist. + defaultRouter.addFetchListener(); + defaultRouter.addCacheListener(); + } + return defaultRouter; + }; + + /* + Copyright 2019 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * Easily register a RegExp, string, or function with a caching + * strategy to a singleton Router instance. + * + * This method will generate a Route for you if needed and + * call {@link workbox-routing.Router#registerRoute}. + * + * @param {RegExp|string|workbox-routing.Route~matchCallback|workbox-routing.Route} capture + * If the capture param is a `Route`, all other arguments will be ignored. + * @param {workbox-routing~handlerCallback} [handler] A callback + * function that returns a Promise resulting in a Response. This parameter + * is required if `capture` is not a `Route` object. + * @param {string} [method='GET'] The HTTP method to match the Route + * against. + * @return {workbox-routing.Route} The generated `Route`. + * + * @memberof workbox-routing + */ + function registerRoute(capture, handler, method) { + let route; + if (typeof capture === 'string') { + const captureUrl = new URL(capture, location.href); + { + if (!(capture.startsWith('/') || capture.startsWith('http'))) { + throw new WorkboxError('invalid-string', { + moduleName: 'workbox-routing', + funcName: 'registerRoute', + paramName: 'capture' + }); + } + // We want to check if Express-style wildcards are in the pathname only. + // TODO: Remove this log message in v4. + const valueToCheck = capture.startsWith('http') ? captureUrl.pathname : capture; + // See https://github.com/pillarjs/path-to-regexp#parameters + const wildcards = '[*:?+]'; + if (new RegExp(`${wildcards}`).exec(valueToCheck)) { + logger.debug(`The '$capture' parameter contains an Express-style wildcard ` + `character (${wildcards}). Strings are now always interpreted as ` + `exact matches; use a RegExp for partial or wildcard matches.`); + } + } + const matchCallback = ({ + url + }) => { + { + if (url.pathname === captureUrl.pathname && url.origin !== captureUrl.origin) { + logger.debug(`${capture} only partially matches the cross-origin URL ` + `${url.toString()}. This route will only handle cross-origin requests ` + `if they match the entire URL.`); + } + } + return url.href === captureUrl.href; + }; + // If `capture` is a string then `handler` and `method` must be present. + route = new Route(matchCallback, handler, method); + } else if (capture instanceof RegExp) { + // If `capture` is a `RegExp` then `handler` and `method` must be present. + route = new RegExpRoute(capture, handler, method); + } else if (typeof capture === 'function') { + // If `capture` is a function then `handler` and `method` must be present. + route = new Route(capture, handler, method); + } else if (capture instanceof Route) { + route = capture; + } else { + throw new WorkboxError('unsupported-route-type', { + moduleName: 'workbox-routing', + funcName: 'registerRoute', + paramName: 'capture' + }); + } + const defaultRouter = getOrCreateDefaultRouter(); + defaultRouter.registerRoute(route); + return route; + } + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + const _cacheNameDetails = { + googleAnalytics: 'googleAnalytics', + precache: 'precache-v2', + prefix: 'workbox', + runtime: 'runtime', + suffix: typeof registration !== 'undefined' ? registration.scope : '' + }; + const _createCacheName = cacheName => { + return [_cacheNameDetails.prefix, cacheName, _cacheNameDetails.suffix].filter(value => value && value.length > 0).join('-'); + }; + const eachCacheNameDetail = fn => { + for (const key of Object.keys(_cacheNameDetails)) { + fn(key); + } + }; + const cacheNames = { + updateDetails: details => { + eachCacheNameDetail(key => { + if (typeof details[key] === 'string') { + _cacheNameDetails[key] = details[key]; + } + }); + }, + getGoogleAnalyticsName: userCacheName => { + return userCacheName || _createCacheName(_cacheNameDetails.googleAnalytics); + }, + getPrecacheName: userCacheName => { + return userCacheName || _createCacheName(_cacheNameDetails.precache); + }, + getPrefix: () => { + return _cacheNameDetails.prefix; + }, + getRuntimeName: userCacheName => { + return userCacheName || _createCacheName(_cacheNameDetails.runtime); + }, + getSuffix: () => { + return _cacheNameDetails.suffix; + } + }; + + /* + Copyright 2019 Google LLC + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * A helper function that prevents a promise from being flagged as unused. + * + * @private + **/ + function dontWaitFor(promise) { + // Effective no-op. + void promise.then(() => {}); + } + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + // Callbacks to be executed whenever there's a quota error. + // Can't change Function type right now. + // eslint-disable-next-line @typescript-eslint/ban-types + const quotaErrorCallbacks = new Set(); + + /* + Copyright 2019 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * Adds a function to the set of quotaErrorCallbacks that will be executed if + * there's a quota error. + * + * @param {Function} callback + * @memberof workbox-core + */ + // Can't change Function type + // eslint-disable-next-line @typescript-eslint/ban-types + function registerQuotaErrorCallback(callback) { + { + finalAssertExports.isType(callback, 'function', { + moduleName: 'workbox-core', + funcName: 'register', + paramName: 'callback' + }); + } + quotaErrorCallbacks.add(callback); + { + logger.log('Registered a callback to respond to quota errors.', callback); + } + } + + function _extends() { + _extends = Object.assign ? Object.assign.bind() : function (target) { + for (var i = 1; i < arguments.length; i++) { + var source = arguments[i]; + for (var key in source) { + if (Object.prototype.hasOwnProperty.call(source, key)) { + target[key] = source[key]; + } + } + } + return target; + }; + return _extends.apply(this, arguments); + } + + const instanceOfAny = (object, constructors) => constructors.some(c => object instanceof c); + let idbProxyableTypes; + let cursorAdvanceMethods; + // This is a function to prevent it throwing up in node environments. + function getIdbProxyableTypes() { + return idbProxyableTypes || (idbProxyableTypes = [IDBDatabase, IDBObjectStore, IDBIndex, IDBCursor, IDBTransaction]); + } + // This is a function to prevent it throwing up in node environments. + function getCursorAdvanceMethods() { + return cursorAdvanceMethods || (cursorAdvanceMethods = [IDBCursor.prototype.advance, IDBCursor.prototype.continue, IDBCursor.prototype.continuePrimaryKey]); + } + const cursorRequestMap = new WeakMap(); + const transactionDoneMap = new WeakMap(); + const transactionStoreNamesMap = new WeakMap(); + const transformCache = new WeakMap(); + const reverseTransformCache = new WeakMap(); + function promisifyRequest(request) { + const promise = new Promise((resolve, reject) => { + const unlisten = () => { + request.removeEventListener('success', success); + request.removeEventListener('error', error); + }; + const success = () => { + resolve(wrap(request.result)); + unlisten(); + }; + const error = () => { + reject(request.error); + unlisten(); + }; + request.addEventListener('success', success); + request.addEventListener('error', error); + }); + promise.then(value => { + // Since cursoring reuses the IDBRequest (*sigh*), we cache it for later retrieval + // (see wrapFunction). + if (value instanceof IDBCursor) { + cursorRequestMap.set(value, request); + } + // Catching to avoid "Uncaught Promise exceptions" + }).catch(() => {}); + // This mapping exists in reverseTransformCache but doesn't doesn't exist in transformCache. This + // is because we create many promises from a single IDBRequest. + reverseTransformCache.set(promise, request); + return promise; + } + function cacheDonePromiseForTransaction(tx) { + // Early bail if we've already created a done promise for this transaction. + if (transactionDoneMap.has(tx)) return; + const done = new Promise((resolve, reject) => { + const unlisten = () => { + tx.removeEventListener('complete', complete); + tx.removeEventListener('error', error); + tx.removeEventListener('abort', error); + }; + const complete = () => { + resolve(); + unlisten(); + }; + const error = () => { + reject(tx.error || new DOMException('AbortError', 'AbortError')); + unlisten(); + }; + tx.addEventListener('complete', complete); + tx.addEventListener('error', error); + tx.addEventListener('abort', error); + }); + // Cache it for later retrieval. + transactionDoneMap.set(tx, done); + } + let idbProxyTraps = { + get(target, prop, receiver) { + if (target instanceof IDBTransaction) { + // Special handling for transaction.done. + if (prop === 'done') return transactionDoneMap.get(target); + // Polyfill for objectStoreNames because of Edge. + if (prop === 'objectStoreNames') { + return target.objectStoreNames || transactionStoreNamesMap.get(target); + } + // Make tx.store return the only store in the transaction, or undefined if there are many. + if (prop === 'store') { + return receiver.objectStoreNames[1] ? undefined : receiver.objectStore(receiver.objectStoreNames[0]); + } + } + // Else transform whatever we get back. + return wrap(target[prop]); + }, + set(target, prop, value) { + target[prop] = value; + return true; + }, + has(target, prop) { + if (target instanceof IDBTransaction && (prop === 'done' || prop === 'store')) { + return true; + } + return prop in target; + } + }; + function replaceTraps(callback) { + idbProxyTraps = callback(idbProxyTraps); + } + function wrapFunction(func) { + // Due to expected object equality (which is enforced by the caching in `wrap`), we + // only create one new func per func. + // Edge doesn't support objectStoreNames (booo), so we polyfill it here. + if (func === IDBDatabase.prototype.transaction && !('objectStoreNames' in IDBTransaction.prototype)) { + return function (storeNames, ...args) { + const tx = func.call(unwrap(this), storeNames, ...args); + transactionStoreNamesMap.set(tx, storeNames.sort ? storeNames.sort() : [storeNames]); + return wrap(tx); + }; + } + // Cursor methods are special, as the behaviour is a little more different to standard IDB. In + // IDB, you advance the cursor and wait for a new 'success' on the IDBRequest that gave you the + // cursor. It's kinda like a promise that can resolve with many values. That doesn't make sense + // with real promises, so each advance methods returns a new promise for the cursor object, or + // undefined if the end of the cursor has been reached. + if (getCursorAdvanceMethods().includes(func)) { + return function (...args) { + // Calling the original function with the proxy as 'this' causes ILLEGAL INVOCATION, so we use + // the original object. + func.apply(unwrap(this), args); + return wrap(cursorRequestMap.get(this)); + }; + } + return function (...args) { + // Calling the original function with the proxy as 'this' causes ILLEGAL INVOCATION, so we use + // the original object. + return wrap(func.apply(unwrap(this), args)); + }; + } + function transformCachableValue(value) { + if (typeof value === 'function') return wrapFunction(value); + // This doesn't return, it just creates a 'done' promise for the transaction, + // which is later returned for transaction.done (see idbObjectHandler). + if (value instanceof IDBTransaction) cacheDonePromiseForTransaction(value); + if (instanceOfAny(value, getIdbProxyableTypes())) return new Proxy(value, idbProxyTraps); + // Return the same value back if we're not going to transform it. + return value; + } + function wrap(value) { + // We sometimes generate multiple promises from a single IDBRequest (eg when cursoring), because + // IDB is weird and a single IDBRequest can yield many responses, so these can't be cached. + if (value instanceof IDBRequest) return promisifyRequest(value); + // If we've already transformed this value before, reuse the transformed value. + // This is faster, but it also provides object equality. + if (transformCache.has(value)) return transformCache.get(value); + const newValue = transformCachableValue(value); + // Not all types are transformed. + // These may be primitive types, so they can't be WeakMap keys. + if (newValue !== value) { + transformCache.set(value, newValue); + reverseTransformCache.set(newValue, value); + } + return newValue; + } + const unwrap = value => reverseTransformCache.get(value); + + /** + * Open a database. + * + * @param name Name of the database. + * @param version Schema version. + * @param callbacks Additional callbacks. + */ + function openDB(name, version, { + blocked, + upgrade, + blocking, + terminated + } = {}) { + const request = indexedDB.open(name, version); + const openPromise = wrap(request); + if (upgrade) { + request.addEventListener('upgradeneeded', event => { + upgrade(wrap(request.result), event.oldVersion, event.newVersion, wrap(request.transaction), event); + }); + } + if (blocked) { + request.addEventListener('blocked', event => blocked( + // Casting due to https://github.com/microsoft/TypeScript-DOM-lib-generator/pull/1405 + event.oldVersion, event.newVersion, event)); + } + openPromise.then(db => { + if (terminated) db.addEventListener('close', () => terminated()); + if (blocking) { + db.addEventListener('versionchange', event => blocking(event.oldVersion, event.newVersion, event)); + } + }).catch(() => {}); + return openPromise; + } + /** + * Delete a database. + * + * @param name Name of the database. + */ + function deleteDB(name, { + blocked + } = {}) { + const request = indexedDB.deleteDatabase(name); + if (blocked) { + request.addEventListener('blocked', event => blocked( + // Casting due to https://github.com/microsoft/TypeScript-DOM-lib-generator/pull/1405 + event.oldVersion, event)); + } + return wrap(request).then(() => undefined); + } + const readMethods = ['get', 'getKey', 'getAll', 'getAllKeys', 'count']; + const writeMethods = ['put', 'add', 'delete', 'clear']; + const cachedMethods = new Map(); + function getMethod(target, prop) { + if (!(target instanceof IDBDatabase && !(prop in target) && typeof prop === 'string')) { + return; + } + if (cachedMethods.get(prop)) return cachedMethods.get(prop); + const targetFuncName = prop.replace(/FromIndex$/, ''); + const useIndex = prop !== targetFuncName; + const isWrite = writeMethods.includes(targetFuncName); + if ( + // Bail if the target doesn't exist on the target. Eg, getAll isn't in Edge. + !(targetFuncName in (useIndex ? IDBIndex : IDBObjectStore).prototype) || !(isWrite || readMethods.includes(targetFuncName))) { + return; + } + const method = async function (storeName, ...args) { + // isWrite ? 'readwrite' : undefined gzipps better, but fails in Edge :( + const tx = this.transaction(storeName, isWrite ? 'readwrite' : 'readonly'); + let target = tx.store; + if (useIndex) target = target.index(args.shift()); + // Must reject if op rejects. + // If it's a write operation, must reject if tx.done rejects. + // Must reject with op rejection first. + // Must resolve with op value. + // Must handle both promises (no unhandled rejections) + return (await Promise.all([target[targetFuncName](...args), isWrite && tx.done]))[0]; + }; + cachedMethods.set(prop, method); + return method; + } + replaceTraps(oldTraps => _extends({}, oldTraps, { + get: (target, prop, receiver) => getMethod(target, prop) || oldTraps.get(target, prop, receiver), + has: (target, prop) => !!getMethod(target, prop) || oldTraps.has(target, prop) + })); + + // @ts-ignore + try { + self['workbox:expiration:6.5.3'] && _(); + } catch (e) {} + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + const DB_NAME = 'workbox-expiration'; + const CACHE_OBJECT_STORE = 'cache-entries'; + const normalizeURL = unNormalizedUrl => { + const url = new URL(unNormalizedUrl, location.href); + url.hash = ''; + return url.href; + }; + /** + * Returns the timestamp model. + * + * @private + */ + class CacheTimestampsModel { + /** + * + * @param {string} cacheName + * + * @private + */ + constructor(cacheName) { + this._db = null; + this._cacheName = cacheName; + } + /** + * Performs an upgrade of indexedDB. + * + * @param {IDBPDatabase} db + * + * @private + */ + _upgradeDb(db) { + // TODO(philipwalton): EdgeHTML doesn't support arrays as a keyPath, so we + // have to use the `id` keyPath here and create our own values (a + // concatenation of `url + cacheName`) instead of simply using + // `keyPath: ['url', 'cacheName']`, which is supported in other browsers. + const objStore = db.createObjectStore(CACHE_OBJECT_STORE, { + keyPath: 'id' + }); + // TODO(philipwalton): once we don't have to support EdgeHTML, we can + // create a single index with the keyPath `['cacheName', 'timestamp']` + // instead of doing both these indexes. + objStore.createIndex('cacheName', 'cacheName', { + unique: false + }); + objStore.createIndex('timestamp', 'timestamp', { + unique: false + }); + } + /** + * Performs an upgrade of indexedDB and deletes deprecated DBs. + * + * @param {IDBPDatabase} db + * + * @private + */ + _upgradeDbAndDeleteOldDbs(db) { + this._upgradeDb(db); + if (this._cacheName) { + void deleteDB(this._cacheName); + } + } + /** + * @param {string} url + * @param {number} timestamp + * + * @private + */ + async setTimestamp(url, timestamp) { + url = normalizeURL(url); + const entry = { + url, + timestamp, + cacheName: this._cacheName, + // Creating an ID from the URL and cache name won't be necessary once + // Edge switches to Chromium and all browsers we support work with + // array keyPaths. + id: this._getId(url) + }; + const db = await this.getDb(); + const tx = db.transaction(CACHE_OBJECT_STORE, 'readwrite', { + durability: 'relaxed' + }); + await tx.store.put(entry); + await tx.done; + } + /** + * Returns the timestamp stored for a given URL. + * + * @param {string} url + * @return {number | undefined} + * + * @private + */ + async getTimestamp(url) { + const db = await this.getDb(); + const entry = await db.get(CACHE_OBJECT_STORE, this._getId(url)); + return entry === null || entry === void 0 ? void 0 : entry.timestamp; + } + /** + * Iterates through all the entries in the object store (from newest to + * oldest) and removes entries once either `maxCount` is reached or the + * entry's timestamp is less than `minTimestamp`. + * + * @param {number} minTimestamp + * @param {number} maxCount + * @return {Array} + * + * @private + */ + async expireEntries(minTimestamp, maxCount) { + const db = await this.getDb(); + let cursor = await db.transaction(CACHE_OBJECT_STORE).store.index('timestamp').openCursor(null, 'prev'); + const entriesToDelete = []; + let entriesNotDeletedCount = 0; + while (cursor) { + const result = cursor.value; + // TODO(philipwalton): once we can use a multi-key index, we + // won't have to check `cacheName` here. + if (result.cacheName === this._cacheName) { + // Delete an entry if it's older than the max age or + // if we already have the max number allowed. + if (minTimestamp && result.timestamp < minTimestamp || maxCount && entriesNotDeletedCount >= maxCount) { + // TODO(philipwalton): we should be able to delete the + // entry right here, but doing so causes an iteration + // bug in Safari stable (fixed in TP). Instead we can + // store the keys of the entries to delete, and then + // delete the separate transactions. + // https://github.com/GoogleChrome/workbox/issues/1978 + // cursor.delete(); + // We only need to return the URL, not the whole entry. + entriesToDelete.push(cursor.value); + } else { + entriesNotDeletedCount++; + } + } + cursor = await cursor.continue(); + } + // TODO(philipwalton): once the Safari bug in the following issue is fixed, + // we should be able to remove this loop and do the entry deletion in the + // cursor loop above: + // https://github.com/GoogleChrome/workbox/issues/1978 + const urlsDeleted = []; + for (const entry of entriesToDelete) { + await db.delete(CACHE_OBJECT_STORE, entry.id); + urlsDeleted.push(entry.url); + } + return urlsDeleted; + } + /** + * Takes a URL and returns an ID that will be unique in the object store. + * + * @param {string} url + * @return {string} + * + * @private + */ + _getId(url) { + // Creating an ID from the URL and cache name won't be necessary once + // Edge switches to Chromium and all browsers we support work with + // array keyPaths. + return this._cacheName + '|' + normalizeURL(url); + } + /** + * Returns an open connection to the database. + * + * @private + */ + async getDb() { + if (!this._db) { + this._db = await openDB(DB_NAME, 1, { + upgrade: this._upgradeDbAndDeleteOldDbs.bind(this) + }); + } + return this._db; + } + } + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * The `CacheExpiration` class allows you define an expiration and / or + * limit on the number of responses stored in a + * [`Cache`](https://developer.mozilla.org/en-US/docs/Web/API/Cache). + * + * @memberof workbox-expiration + */ + class CacheExpiration { + /** + * To construct a new CacheExpiration instance you must provide at least + * one of the `config` properties. + * + * @param {string} cacheName Name of the cache to apply restrictions to. + * @param {Object} config + * @param {number} [config.maxEntries] The maximum number of entries to cache. + * Entries used the least will be removed as the maximum is reached. + * @param {number} [config.maxAgeSeconds] The maximum age of an entry before + * it's treated as stale and removed. + * @param {Object} [config.matchOptions] The [`CacheQueryOptions`](https://developer.mozilla.org/en-US/docs/Web/API/Cache/delete#Parameters) + * that will be used when calling `delete()` on the cache. + */ + constructor(cacheName, config = {}) { + this._isRunning = false; + this._rerunRequested = false; + { + finalAssertExports.isType(cacheName, 'string', { + moduleName: 'workbox-expiration', + className: 'CacheExpiration', + funcName: 'constructor', + paramName: 'cacheName' + }); + if (!(config.maxEntries || config.maxAgeSeconds)) { + throw new WorkboxError('max-entries-or-age-required', { + moduleName: 'workbox-expiration', + className: 'CacheExpiration', + funcName: 'constructor' + }); + } + if (config.maxEntries) { + finalAssertExports.isType(config.maxEntries, 'number', { + moduleName: 'workbox-expiration', + className: 'CacheExpiration', + funcName: 'constructor', + paramName: 'config.maxEntries' + }); + } + if (config.maxAgeSeconds) { + finalAssertExports.isType(config.maxAgeSeconds, 'number', { + moduleName: 'workbox-expiration', + className: 'CacheExpiration', + funcName: 'constructor', + paramName: 'config.maxAgeSeconds' + }); + } + } + this._maxEntries = config.maxEntries; + this._maxAgeSeconds = config.maxAgeSeconds; + this._matchOptions = config.matchOptions; + this._cacheName = cacheName; + this._timestampModel = new CacheTimestampsModel(cacheName); + } + /** + * Expires entries for the given cache and given criteria. + */ + async expireEntries() { + if (this._isRunning) { + this._rerunRequested = true; + return; + } + this._isRunning = true; + const minTimestamp = this._maxAgeSeconds ? Date.now() - this._maxAgeSeconds * 1000 : 0; + const urlsExpired = await this._timestampModel.expireEntries(minTimestamp, this._maxEntries); + // Delete URLs from the cache + const cache = await self.caches.open(this._cacheName); + for (const url of urlsExpired) { + await cache.delete(url, this._matchOptions); + } + { + if (urlsExpired.length > 0) { + logger.groupCollapsed(`Expired ${urlsExpired.length} ` + `${urlsExpired.length === 1 ? 'entry' : 'entries'} and removed ` + `${urlsExpired.length === 1 ? 'it' : 'them'} from the ` + `'${this._cacheName}' cache.`); + logger.log(`Expired the following ${urlsExpired.length === 1 ? 'URL' : 'URLs'}:`); + urlsExpired.forEach(url => logger.log(` ${url}`)); + logger.groupEnd(); + } else { + logger.debug(`Cache expiration ran and found no entries to remove.`); + } + } + this._isRunning = false; + if (this._rerunRequested) { + this._rerunRequested = false; + dontWaitFor(this.expireEntries()); + } + } + /** + * Update the timestamp for the given URL. This ensures the when + * removing entries based on maximum entries, most recently used + * is accurate or when expiring, the timestamp is up-to-date. + * + * @param {string} url + */ + async updateTimestamp(url) { + { + finalAssertExports.isType(url, 'string', { + moduleName: 'workbox-expiration', + className: 'CacheExpiration', + funcName: 'updateTimestamp', + paramName: 'url' + }); + } + await this._timestampModel.setTimestamp(url, Date.now()); + } + /** + * Can be used to check if a URL has expired or not before it's used. + * + * This requires a look up from IndexedDB, so can be slow. + * + * Note: This method will not remove the cached entry, call + * `expireEntries()` to remove indexedDB and Cache entries. + * + * @param {string} url + * @return {boolean} + */ + async isURLExpired(url) { + if (!this._maxAgeSeconds) { + { + throw new WorkboxError(`expired-test-without-max-age`, { + methodName: 'isURLExpired', + paramName: 'maxAgeSeconds' + }); + } + } else { + const timestamp = await this._timestampModel.getTimestamp(url); + const expireOlderThan = Date.now() - this._maxAgeSeconds * 1000; + return timestamp !== undefined ? timestamp < expireOlderThan : true; + } + } + /** + * Removes the IndexedDB object store used to keep track of cache expiration + * metadata. + */ + async delete() { + // Make sure we don't attempt another rerun if we're called in the middle of + // a cache expiration. + this._rerunRequested = false; + await this._timestampModel.expireEntries(Infinity); // Expires all. + } + } + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * This plugin can be used in a `workbox-strategy` to regularly enforce a + * limit on the age and / or the number of cached requests. + * + * It can only be used with `workbox-strategy` instances that have a + * [custom `cacheName` property set](/web/tools/workbox/guides/configure-workbox#custom_cache_names_in_strategies). + * In other words, it can't be used to expire entries in strategy that uses the + * default runtime cache name. + * + * Whenever a cached response is used or updated, this plugin will look + * at the associated cache and remove any old or extra responses. + * + * When using `maxAgeSeconds`, responses may be used *once* after expiring + * because the expiration clean up will not have occurred until *after* the + * cached response has been used. If the response has a "Date" header, then + * a light weight expiration check is performed and the response will not be + * used immediately. + * + * When using `maxEntries`, the entry least-recently requested will be removed + * from the cache first. + * + * @memberof workbox-expiration + */ + class ExpirationPlugin { + /** + * @param {ExpirationPluginOptions} config + * @param {number} [config.maxEntries] The maximum number of entries to cache. + * Entries used the least will be removed as the maximum is reached. + * @param {number} [config.maxAgeSeconds] The maximum age of an entry before + * it's treated as stale and removed. + * @param {Object} [config.matchOptions] The [`CacheQueryOptions`](https://developer.mozilla.org/en-US/docs/Web/API/Cache/delete#Parameters) + * that will be used when calling `delete()` on the cache. + * @param {boolean} [config.purgeOnQuotaError] Whether to opt this cache in to + * automatic deletion if the available storage quota has been exceeded. + */ + constructor(config = {}) { + /** + * A "lifecycle" callback that will be triggered automatically by the + * `workbox-strategies` handlers when a `Response` is about to be returned + * from a [Cache](https://developer.mozilla.org/en-US/docs/Web/API/Cache) to + * the handler. It allows the `Response` to be inspected for freshness and + * prevents it from being used if the `Response`'s `Date` header value is + * older than the configured `maxAgeSeconds`. + * + * @param {Object} options + * @param {string} options.cacheName Name of the cache the response is in. + * @param {Response} options.cachedResponse The `Response` object that's been + * read from a cache and whose freshness should be checked. + * @return {Response} Either the `cachedResponse`, if it's + * fresh, or `null` if the `Response` is older than `maxAgeSeconds`. + * + * @private + */ + this.cachedResponseWillBeUsed = async ({ + event, + request, + cacheName, + cachedResponse + }) => { + if (!cachedResponse) { + return null; + } + const isFresh = this._isResponseDateFresh(cachedResponse); + // Expire entries to ensure that even if the expiration date has + // expired, it'll only be used once. + const cacheExpiration = this._getCacheExpiration(cacheName); + dontWaitFor(cacheExpiration.expireEntries()); + // Update the metadata for the request URL to the current timestamp, + // but don't `await` it as we don't want to block the response. + const updateTimestampDone = cacheExpiration.updateTimestamp(request.url); + if (event) { + try { + event.waitUntil(updateTimestampDone); + } catch (error) { + { + // The event may not be a fetch event; only log the URL if it is. + if ('request' in event) { + logger.warn(`Unable to ensure service worker stays alive when ` + `updating cache entry for ` + `'${getFriendlyURL(event.request.url)}'.`); + } + } + } + } + return isFresh ? cachedResponse : null; + }; + /** + * A "lifecycle" callback that will be triggered automatically by the + * `workbox-strategies` handlers when an entry is added to a cache. + * + * @param {Object} options + * @param {string} options.cacheName Name of the cache that was updated. + * @param {string} options.request The Request for the cached entry. + * + * @private + */ + this.cacheDidUpdate = async ({ + cacheName, + request + }) => { + { + finalAssertExports.isType(cacheName, 'string', { + moduleName: 'workbox-expiration', + className: 'Plugin', + funcName: 'cacheDidUpdate', + paramName: 'cacheName' + }); + finalAssertExports.isInstance(request, Request, { + moduleName: 'workbox-expiration', + className: 'Plugin', + funcName: 'cacheDidUpdate', + paramName: 'request' + }); + } + const cacheExpiration = this._getCacheExpiration(cacheName); + await cacheExpiration.updateTimestamp(request.url); + await cacheExpiration.expireEntries(); + }; + { + if (!(config.maxEntries || config.maxAgeSeconds)) { + throw new WorkboxError('max-entries-or-age-required', { + moduleName: 'workbox-expiration', + className: 'Plugin', + funcName: 'constructor' + }); + } + if (config.maxEntries) { + finalAssertExports.isType(config.maxEntries, 'number', { + moduleName: 'workbox-expiration', + className: 'Plugin', + funcName: 'constructor', + paramName: 'config.maxEntries' + }); + } + if (config.maxAgeSeconds) { + finalAssertExports.isType(config.maxAgeSeconds, 'number', { + moduleName: 'workbox-expiration', + className: 'Plugin', + funcName: 'constructor', + paramName: 'config.maxAgeSeconds' + }); + } + } + this._config = config; + this._maxAgeSeconds = config.maxAgeSeconds; + this._cacheExpirations = new Map(); + if (config.purgeOnQuotaError) { + registerQuotaErrorCallback(() => this.deleteCacheAndMetadata()); + } + } + /** + * A simple helper method to return a CacheExpiration instance for a given + * cache name. + * + * @param {string} cacheName + * @return {CacheExpiration} + * + * @private + */ + _getCacheExpiration(cacheName) { + if (cacheName === cacheNames.getRuntimeName()) { + throw new WorkboxError('expire-custom-caches-only'); + } + let cacheExpiration = this._cacheExpirations.get(cacheName); + if (!cacheExpiration) { + cacheExpiration = new CacheExpiration(cacheName, this._config); + this._cacheExpirations.set(cacheName, cacheExpiration); + } + return cacheExpiration; + } + /** + * @param {Response} cachedResponse + * @return {boolean} + * + * @private + */ + _isResponseDateFresh(cachedResponse) { + if (!this._maxAgeSeconds) { + // We aren't expiring by age, so return true, it's fresh + return true; + } + // Check if the 'date' header will suffice a quick expiration check. + // See https://github.com/GoogleChromeLabs/sw-toolbox/issues/164 for + // discussion. + const dateHeaderTimestamp = this._getDateHeaderTimestamp(cachedResponse); + if (dateHeaderTimestamp === null) { + // Unable to parse date, so assume it's fresh. + return true; + } + // If we have a valid headerTime, then our response is fresh iff the + // headerTime plus maxAgeSeconds is greater than the current time. + const now = Date.now(); + return dateHeaderTimestamp >= now - this._maxAgeSeconds * 1000; + } + /** + * This method will extract the data header and parse it into a useful + * value. + * + * @param {Response} cachedResponse + * @return {number|null} + * + * @private + */ + _getDateHeaderTimestamp(cachedResponse) { + if (!cachedResponse.headers.has('date')) { + return null; + } + const dateHeader = cachedResponse.headers.get('date'); + const parsedDate = new Date(dateHeader); + const headerTime = parsedDate.getTime(); + // If the Date header was invalid for some reason, parsedDate.getTime() + // will return NaN. + if (isNaN(headerTime)) { + return null; + } + return headerTime; + } + /** + * This is a helper method that performs two operations: + * + * - Deletes *all* the underlying Cache instances associated with this plugin + * instance, by calling caches.delete() on your behalf. + * - Deletes the metadata from IndexedDB used to keep track of expiration + * details for each Cache instance. + * + * When using cache expiration, calling this method is preferable to calling + * `caches.delete()` directly, since this will ensure that the IndexedDB + * metadata is also cleanly removed and open IndexedDB instances are deleted. + * + * Note that if you're *not* using cache expiration for a given cache, calling + * `caches.delete()` and passing in the cache's name should be sufficient. + * There is no Workbox-specific method needed for cleanup in that case. + */ + async deleteCacheAndMetadata() { + // Do this one at a time instead of all at once via `Promise.all()` to + // reduce the chance of inconsistency if a promise rejects. + for (const [cacheName, cacheExpiration] of this._cacheExpirations) { + await self.caches.delete(cacheName); + await cacheExpiration.delete(); + } + // Reset this._cacheExpirations to its initial state. + this._cacheExpirations = new Map(); + } + } + + // @ts-ignore + try { + self['workbox:cacheable-response:6.5.3'] && _(); + } catch (e) {} + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * This class allows you to set up rules determining what + * status codes and/or headers need to be present in order for a + * [`Response`](https://developer.mozilla.org/en-US/docs/Web/API/Response) + * to be considered cacheable. + * + * @memberof workbox-cacheable-response + */ + class CacheableResponse { + /** + * To construct a new CacheableResponse instance you must provide at least + * one of the `config` properties. + * + * If both `statuses` and `headers` are specified, then both conditions must + * be met for the `Response` to be considered cacheable. + * + * @param {Object} config + * @param {Array} [config.statuses] One or more status codes that a + * `Response` can have and be considered cacheable. + * @param {Object} [config.headers] A mapping of header names + * and expected values that a `Response` can have and be considered cacheable. + * If multiple headers are provided, only one needs to be present. + */ + constructor(config = {}) { + { + if (!(config.statuses || config.headers)) { + throw new WorkboxError('statuses-or-headers-required', { + moduleName: 'workbox-cacheable-response', + className: 'CacheableResponse', + funcName: 'constructor' + }); + } + if (config.statuses) { + finalAssertExports.isArray(config.statuses, { + moduleName: 'workbox-cacheable-response', + className: 'CacheableResponse', + funcName: 'constructor', + paramName: 'config.statuses' + }); + } + if (config.headers) { + finalAssertExports.isType(config.headers, 'object', { + moduleName: 'workbox-cacheable-response', + className: 'CacheableResponse', + funcName: 'constructor', + paramName: 'config.headers' + }); + } + } + this._statuses = config.statuses; + this._headers = config.headers; + } + /** + * Checks a response to see whether it's cacheable or not, based on this + * object's configuration. + * + * @param {Response} response The response whose cacheability is being + * checked. + * @return {boolean} `true` if the `Response` is cacheable, and `false` + * otherwise. + */ + isResponseCacheable(response) { + { + finalAssertExports.isInstance(response, Response, { + moduleName: 'workbox-cacheable-response', + className: 'CacheableResponse', + funcName: 'isResponseCacheable', + paramName: 'response' + }); + } + let cacheable = true; + if (this._statuses) { + cacheable = this._statuses.includes(response.status); + } + if (this._headers && cacheable) { + cacheable = Object.keys(this._headers).some(headerName => { + return response.headers.get(headerName) === this._headers[headerName]; + }); + } + { + if (!cacheable) { + logger.groupCollapsed(`The request for ` + `'${getFriendlyURL(response.url)}' returned a response that does ` + `not meet the criteria for being cached.`); + logger.groupCollapsed(`View cacheability criteria here.`); + logger.log(`Cacheable statuses: ` + JSON.stringify(this._statuses)); + logger.log(`Cacheable headers: ` + JSON.stringify(this._headers, null, 2)); + logger.groupEnd(); + const logFriendlyHeaders = {}; + response.headers.forEach((value, key) => { + logFriendlyHeaders[key] = value; + }); + logger.groupCollapsed(`View response status and headers here.`); + logger.log(`Response status: ${response.status}`); + logger.log(`Response headers: ` + JSON.stringify(logFriendlyHeaders, null, 2)); + logger.groupEnd(); + logger.groupCollapsed(`View full response details here.`); + logger.log(response.headers); + logger.log(response); + logger.groupEnd(); + logger.groupEnd(); + } + } + return cacheable; + } + } + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * A class implementing the `cacheWillUpdate` lifecycle callback. This makes it + * easier to add in cacheability checks to requests made via Workbox's built-in + * strategies. + * + * @memberof workbox-cacheable-response + */ + class CacheableResponsePlugin { + /** + * To construct a new CacheableResponsePlugin instance you must provide at + * least one of the `config` properties. + * + * If both `statuses` and `headers` are specified, then both conditions must + * be met for the `Response` to be considered cacheable. + * + * @param {Object} config + * @param {Array} [config.statuses] One or more status codes that a + * `Response` can have and be considered cacheable. + * @param {Object} [config.headers] A mapping of header names + * and expected values that a `Response` can have and be considered cacheable. + * If multiple headers are provided, only one needs to be present. + */ + constructor(config) { + /** + * @param {Object} options + * @param {Response} options.response + * @return {Response|null} + * @private + */ + this.cacheWillUpdate = async ({ + response + }) => { + if (this._cacheableResponse.isResponseCacheable(response)) { + return response; + } + return null; + }; + this._cacheableResponse = new CacheableResponse(config); + } + } + + // @ts-ignore + try { + self['workbox:strategies:6.5.3'] && _(); + } catch (e) {} + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + const cacheOkAndOpaquePlugin = { + /** + * Returns a valid response (to allow caching) if the status is 200 (OK) or + * 0 (opaque). + * + * @param {Object} options + * @param {Response} options.response + * @return {Response|null} + * + * @private + */ + cacheWillUpdate: async ({ + response + }) => { + if (response.status === 200 || response.status === 0) { + return response; + } + return null; + } + }; + + /* + Copyright 2020 Google LLC + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + function stripParams(fullURL, ignoreParams) { + const strippedURL = new URL(fullURL); + for (const param of ignoreParams) { + strippedURL.searchParams.delete(param); + } + return strippedURL.href; + } + /** + * Matches an item in the cache, ignoring specific URL params. This is similar + * to the `ignoreSearch` option, but it allows you to ignore just specific + * params (while continuing to match on the others). + * + * @private + * @param {Cache} cache + * @param {Request} request + * @param {Object} matchOptions + * @param {Array} ignoreParams + * @return {Promise} + */ + async function cacheMatchIgnoreParams(cache, request, ignoreParams, matchOptions) { + const strippedRequestURL = stripParams(request.url, ignoreParams); + // If the request doesn't include any ignored params, match as normal. + if (request.url === strippedRequestURL) { + return cache.match(request, matchOptions); + } + // Otherwise, match by comparing keys + const keysOptions = Object.assign(Object.assign({}, matchOptions), { + ignoreSearch: true + }); + const cacheKeys = await cache.keys(request, keysOptions); + for (const cacheKey of cacheKeys) { + const strippedCacheKeyURL = stripParams(cacheKey.url, ignoreParams); + if (strippedRequestURL === strippedCacheKeyURL) { + return cache.match(cacheKey, matchOptions); + } + } + return; + } + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * The Deferred class composes Promises in a way that allows for them to be + * resolved or rejected from outside the constructor. In most cases promises + * should be used directly, but Deferreds can be necessary when the logic to + * resolve a promise must be separate. + * + * @private + */ + class Deferred { + /** + * Creates a promise and exposes its resolve and reject functions as methods. + */ + constructor() { + this.promise = new Promise((resolve, reject) => { + this.resolve = resolve; + this.reject = reject; + }); + } + } + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * Runs all of the callback functions, one at a time sequentially, in the order + * in which they were registered. + * + * @memberof workbox-core + * @private + */ + async function executeQuotaErrorCallbacks() { + { + logger.log(`About to run ${quotaErrorCallbacks.size} ` + `callbacks to clean up caches.`); + } + for (const callback of quotaErrorCallbacks) { + await callback(); + { + logger.log(callback, 'is complete.'); + } + } + { + logger.log('Finished running callbacks.'); + } + } + + /* + Copyright 2019 Google LLC + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * Returns a promise that resolves and the passed number of milliseconds. + * This utility is an async/await-friendly version of `setTimeout`. + * + * @param {number} ms + * @return {Promise} + * @private + */ + function timeout(ms) { + return new Promise(resolve => setTimeout(resolve, ms)); + } + + /* + Copyright 2020 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + function toRequest(input) { + return typeof input === 'string' ? new Request(input) : input; + } + /** + * A class created every time a Strategy instance instance calls + * {@link workbox-strategies.Strategy~handle} or + * {@link workbox-strategies.Strategy~handleAll} that wraps all fetch and + * cache actions around plugin callbacks and keeps track of when the strategy + * is "done" (i.e. all added `event.waitUntil()` promises have resolved). + * + * @memberof workbox-strategies + */ + class StrategyHandler { + /** + * Creates a new instance associated with the passed strategy and event + * that's handling the request. + * + * The constructor also initializes the state that will be passed to each of + * the plugins handling this request. + * + * @param {workbox-strategies.Strategy} strategy + * @param {Object} options + * @param {Request|string} options.request A request to run this strategy for. + * @param {ExtendableEvent} options.event The event associated with the + * request. + * @param {URL} [options.url] + * @param {*} [options.params] The return value from the + * {@link workbox-routing~matchCallback} (if applicable). + */ + constructor(strategy, options) { + this._cacheKeys = {}; + /** + * The request the strategy is performing (passed to the strategy's + * `handle()` or `handleAll()` method). + * @name request + * @instance + * @type {Request} + * @memberof workbox-strategies.StrategyHandler + */ + /** + * The event associated with this request. + * @name event + * @instance + * @type {ExtendableEvent} + * @memberof workbox-strategies.StrategyHandler + */ + /** + * A `URL` instance of `request.url` (if passed to the strategy's + * `handle()` or `handleAll()` method). + * Note: the `url` param will be present if the strategy was invoked + * from a workbox `Route` object. + * @name url + * @instance + * @type {URL|undefined} + * @memberof workbox-strategies.StrategyHandler + */ + /** + * A `param` value (if passed to the strategy's + * `handle()` or `handleAll()` method). + * Note: the `param` param will be present if the strategy was invoked + * from a workbox `Route` object and the + * {@link workbox-routing~matchCallback} returned + * a truthy value (it will be that value). + * @name params + * @instance + * @type {*|undefined} + * @memberof workbox-strategies.StrategyHandler + */ + { + finalAssertExports.isInstance(options.event, ExtendableEvent, { + moduleName: 'workbox-strategies', + className: 'StrategyHandler', + funcName: 'constructor', + paramName: 'options.event' + }); + } + Object.assign(this, options); + this.event = options.event; + this._strategy = strategy; + this._handlerDeferred = new Deferred(); + this._extendLifetimePromises = []; + // Copy the plugins list (since it's mutable on the strategy), + // so any mutations don't affect this handler instance. + this._plugins = [...strategy.plugins]; + this._pluginStateMap = new Map(); + for (const plugin of this._plugins) { + this._pluginStateMap.set(plugin, {}); + } + this.event.waitUntil(this._handlerDeferred.promise); + } + /** + * Fetches a given request (and invokes any applicable plugin callback + * methods) using the `fetchOptions` (for non-navigation requests) and + * `plugins` defined on the `Strategy` object. + * + * The following plugin lifecycle methods are invoked when using this method: + * - `requestWillFetch()` + * - `fetchDidSucceed()` + * - `fetchDidFail()` + * + * @param {Request|string} input The URL or request to fetch. + * @return {Promise} + */ + async fetch(input) { + const { + event + } = this; + let request = toRequest(input); + if (request.mode === 'navigate' && event instanceof FetchEvent && event.preloadResponse) { + const possiblePreloadResponse = await event.preloadResponse; + if (possiblePreloadResponse) { + { + logger.log(`Using a preloaded navigation response for ` + `'${getFriendlyURL(request.url)}'`); + } + return possiblePreloadResponse; + } + } + // If there is a fetchDidFail plugin, we need to save a clone of the + // original request before it's either modified by a requestWillFetch + // plugin or before the original request's body is consumed via fetch(). + const originalRequest = this.hasCallback('fetchDidFail') ? request.clone() : null; + try { + for (const cb of this.iterateCallbacks('requestWillFetch')) { + request = await cb({ + request: request.clone(), + event + }); + } + } catch (err) { + if (err instanceof Error) { + throw new WorkboxError('plugin-error-request-will-fetch', { + thrownErrorMessage: err.message + }); + } + } + // The request can be altered by plugins with `requestWillFetch` making + // the original request (most likely from a `fetch` event) different + // from the Request we make. Pass both to `fetchDidFail` to aid debugging. + const pluginFilteredRequest = request.clone(); + try { + let fetchResponse; + // See https://github.com/GoogleChrome/workbox/issues/1796 + fetchResponse = await fetch(request, request.mode === 'navigate' ? undefined : this._strategy.fetchOptions); + if ("development" !== 'production') { + logger.debug(`Network request for ` + `'${getFriendlyURL(request.url)}' returned a response with ` + `status '${fetchResponse.status}'.`); + } + for (const callback of this.iterateCallbacks('fetchDidSucceed')) { + fetchResponse = await callback({ + event, + request: pluginFilteredRequest, + response: fetchResponse + }); + } + return fetchResponse; + } catch (error) { + { + logger.log(`Network request for ` + `'${getFriendlyURL(request.url)}' threw an error.`, error); + } + // `originalRequest` will only exist if a `fetchDidFail` callback + // is being used (see above). + if (originalRequest) { + await this.runCallbacks('fetchDidFail', { + error: error, + event, + originalRequest: originalRequest.clone(), + request: pluginFilteredRequest.clone() + }); + } + throw error; + } + } + /** + * Calls `this.fetch()` and (in the background) runs `this.cachePut()` on + * the response generated by `this.fetch()`. + * + * The call to `this.cachePut()` automatically invokes `this.waitUntil()`, + * so you do not have to manually call `waitUntil()` on the event. + * + * @param {Request|string} input The request or URL to fetch and cache. + * @return {Promise} + */ + async fetchAndCachePut(input) { + const response = await this.fetch(input); + const responseClone = response.clone(); + void this.waitUntil(this.cachePut(input, responseClone)); + return response; + } + /** + * Matches a request from the cache (and invokes any applicable plugin + * callback methods) using the `cacheName`, `matchOptions`, and `plugins` + * defined on the strategy object. + * + * The following plugin lifecycle methods are invoked when using this method: + * - cacheKeyWillByUsed() + * - cachedResponseWillByUsed() + * + * @param {Request|string} key The Request or URL to use as the cache key. + * @return {Promise} A matching response, if found. + */ + async cacheMatch(key) { + const request = toRequest(key); + let cachedResponse; + const { + cacheName, + matchOptions + } = this._strategy; + const effectiveRequest = await this.getCacheKey(request, 'read'); + const multiMatchOptions = Object.assign(Object.assign({}, matchOptions), { + cacheName + }); + cachedResponse = await caches.match(effectiveRequest, multiMatchOptions); + { + if (cachedResponse) { + logger.debug(`Found a cached response in '${cacheName}'.`); + } else { + logger.debug(`No cached response found in '${cacheName}'.`); + } + } + for (const callback of this.iterateCallbacks('cachedResponseWillBeUsed')) { + cachedResponse = (await callback({ + cacheName, + matchOptions, + cachedResponse, + request: effectiveRequest, + event: this.event + })) || undefined; + } + return cachedResponse; + } + /** + * Puts a request/response pair in the cache (and invokes any applicable + * plugin callback methods) using the `cacheName` and `plugins` defined on + * the strategy object. + * + * The following plugin lifecycle methods are invoked when using this method: + * - cacheKeyWillByUsed() + * - cacheWillUpdate() + * - cacheDidUpdate() + * + * @param {Request|string} key The request or URL to use as the cache key. + * @param {Response} response The response to cache. + * @return {Promise} `false` if a cacheWillUpdate caused the response + * not be cached, and `true` otherwise. + */ + async cachePut(key, response) { + const request = toRequest(key); + // Run in the next task to avoid blocking other cache reads. + // https://github.com/w3c/ServiceWorker/issues/1397 + await timeout(0); + const effectiveRequest = await this.getCacheKey(request, 'write'); + { + if (effectiveRequest.method && effectiveRequest.method !== 'GET') { + throw new WorkboxError('attempt-to-cache-non-get-request', { + url: getFriendlyURL(effectiveRequest.url), + method: effectiveRequest.method + }); + } + // See https://github.com/GoogleChrome/workbox/issues/2818 + const vary = response.headers.get('Vary'); + if (vary) { + logger.debug(`The response for ${getFriendlyURL(effectiveRequest.url)} ` + `has a 'Vary: ${vary}' header. ` + `Consider setting the {ignoreVary: true} option on your strategy ` + `to ensure cache matching and deletion works as expected.`); + } + } + if (!response) { + { + logger.error(`Cannot cache non-existent response for ` + `'${getFriendlyURL(effectiveRequest.url)}'.`); + } + throw new WorkboxError('cache-put-with-no-response', { + url: getFriendlyURL(effectiveRequest.url) + }); + } + const responseToCache = await this._ensureResponseSafeToCache(response); + if (!responseToCache) { + { + logger.debug(`Response '${getFriendlyURL(effectiveRequest.url)}' ` + `will not be cached.`, responseToCache); + } + return false; + } + const { + cacheName, + matchOptions + } = this._strategy; + const cache = await self.caches.open(cacheName); + const hasCacheUpdateCallback = this.hasCallback('cacheDidUpdate'); + const oldResponse = hasCacheUpdateCallback ? await cacheMatchIgnoreParams( + // TODO(philipwalton): the `__WB_REVISION__` param is a precaching + // feature. Consider into ways to only add this behavior if using + // precaching. + cache, effectiveRequest.clone(), ['__WB_REVISION__'], matchOptions) : null; + { + logger.debug(`Updating the '${cacheName}' cache with a new Response ` + `for ${getFriendlyURL(effectiveRequest.url)}.`); + } + try { + await cache.put(effectiveRequest, hasCacheUpdateCallback ? responseToCache.clone() : responseToCache); + } catch (error) { + if (error instanceof Error) { + // See https://developer.mozilla.org/en-US/docs/Web/API/DOMException#exception-QuotaExceededError + if (error.name === 'QuotaExceededError') { + await executeQuotaErrorCallbacks(); + } + throw error; + } + } + for (const callback of this.iterateCallbacks('cacheDidUpdate')) { + await callback({ + cacheName, + oldResponse, + newResponse: responseToCache.clone(), + request: effectiveRequest, + event: this.event + }); + } + return true; + } + /** + * Checks the list of plugins for the `cacheKeyWillBeUsed` callback, and + * executes any of those callbacks found in sequence. The final `Request` + * object returned by the last plugin is treated as the cache key for cache + * reads and/or writes. If no `cacheKeyWillBeUsed` plugin callbacks have + * been registered, the passed request is returned unmodified + * + * @param {Request} request + * @param {string} mode + * @return {Promise} + */ + async getCacheKey(request, mode) { + const key = `${request.url} | ${mode}`; + if (!this._cacheKeys[key]) { + let effectiveRequest = request; + for (const callback of this.iterateCallbacks('cacheKeyWillBeUsed')) { + effectiveRequest = toRequest(await callback({ + mode, + request: effectiveRequest, + event: this.event, + // params has a type any can't change right now. + params: this.params // eslint-disable-line + })); + } + + this._cacheKeys[key] = effectiveRequest; + } + return this._cacheKeys[key]; + } + /** + * Returns true if the strategy has at least one plugin with the given + * callback. + * + * @param {string} name The name of the callback to check for. + * @return {boolean} + */ + hasCallback(name) { + for (const plugin of this._strategy.plugins) { + if (name in plugin) { + return true; + } + } + return false; + } + /** + * Runs all plugin callbacks matching the given name, in order, passing the + * given param object (merged ith the current plugin state) as the only + * argument. + * + * Note: since this method runs all plugins, it's not suitable for cases + * where the return value of a callback needs to be applied prior to calling + * the next callback. See + * {@link workbox-strategies.StrategyHandler#iterateCallbacks} + * below for how to handle that case. + * + * @param {string} name The name of the callback to run within each plugin. + * @param {Object} param The object to pass as the first (and only) param + * when executing each callback. This object will be merged with the + * current plugin state prior to callback execution. + */ + async runCallbacks(name, param) { + for (const callback of this.iterateCallbacks(name)) { + // TODO(philipwalton): not sure why `any` is needed. It seems like + // this should work with `as WorkboxPluginCallbackParam[C]`. + await callback(param); + } + } + /** + * Accepts a callback and returns an iterable of matching plugin callbacks, + * where each callback is wrapped with the current handler state (i.e. when + * you call each callback, whatever object parameter you pass it will + * be merged with the plugin's current state). + * + * @param {string} name The name fo the callback to run + * @return {Array} + */ + *iterateCallbacks(name) { + for (const plugin of this._strategy.plugins) { + if (typeof plugin[name] === 'function') { + const state = this._pluginStateMap.get(plugin); + const statefulCallback = param => { + const statefulParam = Object.assign(Object.assign({}, param), { + state + }); + // TODO(philipwalton): not sure why `any` is needed. It seems like + // this should work with `as WorkboxPluginCallbackParam[C]`. + return plugin[name](statefulParam); + }; + yield statefulCallback; + } + } + } + /** + * Adds a promise to the + * [extend lifetime promises]{@link https://w3c.github.io/ServiceWorker/#extendableevent-extend-lifetime-promises} + * of the event event associated with the request being handled (usually a + * `FetchEvent`). + * + * Note: you can await + * {@link workbox-strategies.StrategyHandler~doneWaiting} + * to know when all added promises have settled. + * + * @param {Promise} promise A promise to add to the extend lifetime promises + * of the event that triggered the request. + */ + waitUntil(promise) { + this._extendLifetimePromises.push(promise); + return promise; + } + /** + * Returns a promise that resolves once all promises passed to + * {@link workbox-strategies.StrategyHandler~waitUntil} + * have settled. + * + * Note: any work done after `doneWaiting()` settles should be manually + * passed to an event's `waitUntil()` method (not this handler's + * `waitUntil()` method), otherwise the service worker thread my be killed + * prior to your work completing. + */ + async doneWaiting() { + let promise; + while (promise = this._extendLifetimePromises.shift()) { + await promise; + } + } + /** + * Stops running the strategy and immediately resolves any pending + * `waitUntil()` promises. + */ + destroy() { + this._handlerDeferred.resolve(null); + } + /** + * This method will call cacheWillUpdate on the available plugins (or use + * status === 200) to determine if the Response is safe and valid to cache. + * + * @param {Request} options.request + * @param {Response} options.response + * @return {Promise} + * + * @private + */ + async _ensureResponseSafeToCache(response) { + let responseToCache = response; + let pluginsUsed = false; + for (const callback of this.iterateCallbacks('cacheWillUpdate')) { + responseToCache = (await callback({ + request: this.request, + response: responseToCache, + event: this.event + })) || undefined; + pluginsUsed = true; + if (!responseToCache) { + break; + } + } + if (!pluginsUsed) { + if (responseToCache && responseToCache.status !== 200) { + responseToCache = undefined; + } + { + if (responseToCache) { + if (responseToCache.status !== 200) { + if (responseToCache.status === 0) { + logger.warn(`The response for '${this.request.url}' ` + `is an opaque response. The caching strategy that you're ` + `using will not cache opaque responses by default.`); + } else { + logger.debug(`The response for '${this.request.url}' ` + `returned a status code of '${response.status}' and won't ` + `be cached as a result.`); + } + } + } + } + } + return responseToCache; + } + } + + /* + Copyright 2020 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * An abstract base class that all other strategy classes must extend from: + * + * @memberof workbox-strategies + */ + class Strategy { + /** + * Creates a new instance of the strategy and sets all documented option + * properties as public instance properties. + * + * Note: if a custom strategy class extends the base Strategy class and does + * not need more than these properties, it does not need to define its own + * constructor. + * + * @param {Object} [options] + * @param {string} [options.cacheName] Cache name to store and retrieve + * requests. Defaults to the cache names provided by + * {@link workbox-core.cacheNames}. + * @param {Array} [options.plugins] [Plugins]{@link https://developers.google.com/web/tools/workbox/guides/using-plugins} + * to use in conjunction with this caching strategy. + * @param {Object} [options.fetchOptions] Values passed along to the + * [`init`](https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/fetch#Parameters) + * of [non-navigation](https://github.com/GoogleChrome/workbox/issues/1796) + * `fetch()` requests made by this strategy. + * @param {Object} [options.matchOptions] The + * [`CacheQueryOptions`]{@link https://w3c.github.io/ServiceWorker/#dictdef-cachequeryoptions} + * for any `cache.match()` or `cache.put()` calls made by this strategy. + */ + constructor(options = {}) { + /** + * Cache name to store and retrieve + * requests. Defaults to the cache names provided by + * {@link workbox-core.cacheNames}. + * + * @type {string} + */ + this.cacheName = cacheNames.getRuntimeName(options.cacheName); + /** + * The list + * [Plugins]{@link https://developers.google.com/web/tools/workbox/guides/using-plugins} + * used by this strategy. + * + * @type {Array} + */ + this.plugins = options.plugins || []; + /** + * Values passed along to the + * [`init`]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/fetch#Parameters} + * of all fetch() requests made by this strategy. + * + * @type {Object} + */ + this.fetchOptions = options.fetchOptions; + /** + * The + * [`CacheQueryOptions`]{@link https://w3c.github.io/ServiceWorker/#dictdef-cachequeryoptions} + * for any `cache.match()` or `cache.put()` calls made by this strategy. + * + * @type {Object} + */ + this.matchOptions = options.matchOptions; + } + /** + * Perform a request strategy and returns a `Promise` that will resolve with + * a `Response`, invoking all relevant plugin callbacks. + * + * When a strategy instance is registered with a Workbox + * {@link workbox-routing.Route}, this method is automatically + * called when the route matches. + * + * Alternatively, this method can be used in a standalone `FetchEvent` + * listener by passing it to `event.respondWith()`. + * + * @param {FetchEvent|Object} options A `FetchEvent` or an object with the + * properties listed below. + * @param {Request|string} options.request A request to run this strategy for. + * @param {ExtendableEvent} options.event The event associated with the + * request. + * @param {URL} [options.url] + * @param {*} [options.params] + */ + handle(options) { + const [responseDone] = this.handleAll(options); + return responseDone; + } + /** + * Similar to {@link workbox-strategies.Strategy~handle}, but + * instead of just returning a `Promise` that resolves to a `Response` it + * it will return an tuple of `[response, done]` promises, where the former + * (`response`) is equivalent to what `handle()` returns, and the latter is a + * Promise that will resolve once any promises that were added to + * `event.waitUntil()` as part of performing the strategy have completed. + * + * You can await the `done` promise to ensure any extra work performed by + * the strategy (usually caching responses) completes successfully. + * + * @param {FetchEvent|Object} options A `FetchEvent` or an object with the + * properties listed below. + * @param {Request|string} options.request A request to run this strategy for. + * @param {ExtendableEvent} options.event The event associated with the + * request. + * @param {URL} [options.url] + * @param {*} [options.params] + * @return {Array} A tuple of [response, done] + * promises that can be used to determine when the response resolves as + * well as when the handler has completed all its work. + */ + handleAll(options) { + // Allow for flexible options to be passed. + if (options instanceof FetchEvent) { + options = { + event: options, + request: options.request + }; + } + const event = options.event; + const request = typeof options.request === 'string' ? new Request(options.request) : options.request; + const params = 'params' in options ? options.params : undefined; + const handler = new StrategyHandler(this, { + event, + request, + params + }); + const responseDone = this._getResponse(handler, request, event); + const handlerDone = this._awaitComplete(responseDone, handler, request, event); + // Return an array of promises, suitable for use with Promise.all(). + return [responseDone, handlerDone]; + } + async _getResponse(handler, request, event) { + await handler.runCallbacks('handlerWillStart', { + event, + request + }); + let response = undefined; + try { + response = await this._handle(request, handler); + // The "official" Strategy subclasses all throw this error automatically, + // but in case a third-party Strategy doesn't, ensure that we have a + // consistent failure when there's no response or an error response. + if (!response || response.type === 'error') { + throw new WorkboxError('no-response', { + url: request.url + }); + } + } catch (error) { + if (error instanceof Error) { + for (const callback of handler.iterateCallbacks('handlerDidError')) { + response = await callback({ + error, + event, + request + }); + if (response) { + break; + } + } + } + if (!response) { + throw error; + } else { + logger.log(`While responding to '${getFriendlyURL(request.url)}', ` + `an ${error instanceof Error ? error.toString() : ''} error occurred. Using a fallback response provided by ` + `a handlerDidError plugin.`); + } + } + for (const callback of handler.iterateCallbacks('handlerWillRespond')) { + response = await callback({ + event, + request, + response + }); + } + return response; + } + async _awaitComplete(responseDone, handler, request, event) { + let response; + let error; + try { + response = await responseDone; + } catch (error) { + // Ignore errors, as response errors should be caught via the `response` + // promise above. The `done` promise will only throw for errors in + // promises passed to `handler.waitUntil()`. + } + try { + await handler.runCallbacks('handlerDidRespond', { + event, + request, + response + }); + await handler.doneWaiting(); + } catch (waitUntilError) { + if (waitUntilError instanceof Error) { + error = waitUntilError; + } + } + await handler.runCallbacks('handlerDidComplete', { + event, + request, + response, + error: error + }); + handler.destroy(); + if (error) { + throw error; + } + } + } + /** + * Classes extending the `Strategy` based class should implement this method, + * and leverage the {@link workbox-strategies.StrategyHandler} + * arg to perform all fetching and cache logic, which will ensure all relevant + * cache, cache options, fetch options and plugins are used (per the current + * strategy instance). + * + * @name _handle + * @instance + * @abstract + * @function + * @param {Request} request + * @param {workbox-strategies.StrategyHandler} handler + * @return {Promise} + * + * @memberof workbox-strategies.Strategy + */ + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + const messages = { + strategyStart: (strategyName, request) => `Using ${strategyName} to respond to '${getFriendlyURL(request.url)}'`, + printFinalResponse: response => { + if (response) { + logger.groupCollapsed(`View the final response here.`); + logger.log(response || '[No response returned]'); + logger.groupEnd(); + } + } + }; + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * An implementation of a + * [network first](https://developer.chrome.com/docs/workbox/caching-strategies-overview/#network-first-falling-back-to-cache) + * request strategy. + * + * By default, this strategy will cache responses with a 200 status code as + * well as [opaque responses](https://developer.chrome.com/docs/workbox/caching-resources-during-runtime/#opaque-responses). + * Opaque responses are are cross-origin requests where the response doesn't + * support [CORS](https://enable-cors.org/). + * + * If the network request fails, and there is no cache match, this will throw + * a `WorkboxError` exception. + * + * @extends workbox-strategies.Strategy + * @memberof workbox-strategies + */ + class NetworkFirst extends Strategy { + /** + * @param {Object} [options] + * @param {string} [options.cacheName] Cache name to store and retrieve + * requests. Defaults to cache names provided by + * {@link workbox-core.cacheNames}. + * @param {Array} [options.plugins] [Plugins]{@link https://developers.google.com/web/tools/workbox/guides/using-plugins} + * to use in conjunction with this caching strategy. + * @param {Object} [options.fetchOptions] Values passed along to the + * [`init`](https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/fetch#Parameters) + * of [non-navigation](https://github.com/GoogleChrome/workbox/issues/1796) + * `fetch()` requests made by this strategy. + * @param {Object} [options.matchOptions] [`CacheQueryOptions`](https://w3c.github.io/ServiceWorker/#dictdef-cachequeryoptions) + * @param {number} [options.networkTimeoutSeconds] If set, any network requests + * that fail to respond within the timeout will fallback to the cache. + * + * This option can be used to combat + * "[lie-fi]{@link https://developers.google.com/web/fundamentals/performance/poor-connectivity/#lie-fi}" + * scenarios. + */ + constructor(options = {}) { + super(options); + // If this instance contains no plugins with a 'cacheWillUpdate' callback, + // prepend the `cacheOkAndOpaquePlugin` plugin to the plugins list. + if (!this.plugins.some(p => 'cacheWillUpdate' in p)) { + this.plugins.unshift(cacheOkAndOpaquePlugin); + } + this._networkTimeoutSeconds = options.networkTimeoutSeconds || 0; + { + if (this._networkTimeoutSeconds) { + finalAssertExports.isType(this._networkTimeoutSeconds, 'number', { + moduleName: 'workbox-strategies', + className: this.constructor.name, + funcName: 'constructor', + paramName: 'networkTimeoutSeconds' + }); + } + } + } + /** + * @private + * @param {Request|string} request A request to run this strategy for. + * @param {workbox-strategies.StrategyHandler} handler The event that + * triggered the request. + * @return {Promise} + */ + async _handle(request, handler) { + const logs = []; + { + finalAssertExports.isInstance(request, Request, { + moduleName: 'workbox-strategies', + className: this.constructor.name, + funcName: 'handle', + paramName: 'makeRequest' + }); + } + const promises = []; + let timeoutId; + if (this._networkTimeoutSeconds) { + const { + id, + promise + } = this._getTimeoutPromise({ + request, + logs, + handler + }); + timeoutId = id; + promises.push(promise); + } + const networkPromise = this._getNetworkPromise({ + timeoutId, + request, + logs, + handler + }); + promises.push(networkPromise); + const response = await handler.waitUntil((async () => { + // Promise.race() will resolve as soon as the first promise resolves. + return (await handler.waitUntil(Promise.race(promises))) || ( + // If Promise.race() resolved with null, it might be due to a network + // timeout + a cache miss. If that were to happen, we'd rather wait until + // the networkPromise resolves instead of returning null. + // Note that it's fine to await an already-resolved promise, so we don't + // have to check to see if it's still "in flight". + await networkPromise); + })()); + { + logger.groupCollapsed(messages.strategyStart(this.constructor.name, request)); + for (const log of logs) { + logger.log(log); + } + messages.printFinalResponse(response); + logger.groupEnd(); + } + if (!response) { + throw new WorkboxError('no-response', { + url: request.url + }); + } + return response; + } + /** + * @param {Object} options + * @param {Request} options.request + * @param {Array} options.logs A reference to the logs array + * @param {Event} options.event + * @return {Promise} + * + * @private + */ + _getTimeoutPromise({ + request, + logs, + handler + }) { + let timeoutId; + const timeoutPromise = new Promise(resolve => { + const onNetworkTimeout = async () => { + { + logs.push(`Timing out the network response at ` + `${this._networkTimeoutSeconds} seconds.`); + } + resolve(await handler.cacheMatch(request)); + }; + timeoutId = setTimeout(onNetworkTimeout, this._networkTimeoutSeconds * 1000); + }); + return { + promise: timeoutPromise, + id: timeoutId + }; + } + /** + * @param {Object} options + * @param {number|undefined} options.timeoutId + * @param {Request} options.request + * @param {Array} options.logs A reference to the logs Array. + * @param {Event} options.event + * @return {Promise} + * + * @private + */ + async _getNetworkPromise({ + timeoutId, + request, + logs, + handler + }) { + let error; + let response; + try { + response = await handler.fetchAndCachePut(request); + } catch (fetchError) { + if (fetchError instanceof Error) { + error = fetchError; + } + } + if (timeoutId) { + clearTimeout(timeoutId); + } + { + if (response) { + logs.push(`Got response from network.`); + } else { + logs.push(`Unable to get a response from the network. Will respond ` + `with a cached response.`); + } + } + if (error || !response) { + response = await handler.cacheMatch(request); + { + if (response) { + logs.push(`Found a cached response in the '${this.cacheName}'` + ` cache.`); + } else { + logs.push(`No response found in the '${this.cacheName}' cache.`); + } + } + } + return response; + } + } + + /* + Copyright 2019 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * Claim any currently available clients once the service worker + * becomes active. This is normally used in conjunction with `skipWaiting()`. + * + * @memberof workbox-core + */ + function clientsClaim() { + self.addEventListener('activate', () => self.clients.claim()); + } + + /* + Copyright 2020 Google LLC + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * A utility method that makes it easier to use `event.waitUntil` with + * async functions and return the result. + * + * @param {ExtendableEvent} event + * @param {Function} asyncFn + * @return {Function} + * @private + */ + function waitUntil(event, asyncFn) { + const returnPromise = asyncFn(); + event.waitUntil(returnPromise); + return returnPromise; + } + + // @ts-ignore + try { + self['workbox:precaching:6.5.3'] && _(); + } catch (e) {} + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + // Name of the search parameter used to store revision info. + const REVISION_SEARCH_PARAM = '__WB_REVISION__'; + /** + * Converts a manifest entry into a versioned URL suitable for precaching. + * + * @param {Object|string} entry + * @return {string} A URL with versioning info. + * + * @private + * @memberof workbox-precaching + */ + function createCacheKey(entry) { + if (!entry) { + throw new WorkboxError('add-to-cache-list-unexpected-type', { + entry + }); + } + // If a precache manifest entry is a string, it's assumed to be a versioned + // URL, like '/app.abcd1234.js'. Return as-is. + if (typeof entry === 'string') { + const urlObject = new URL(entry, location.href); + return { + cacheKey: urlObject.href, + url: urlObject.href + }; + } + const { + revision, + url + } = entry; + if (!url) { + throw new WorkboxError('add-to-cache-list-unexpected-type', { + entry + }); + } + // If there's just a URL and no revision, then it's also assumed to be a + // versioned URL. + if (!revision) { + const urlObject = new URL(url, location.href); + return { + cacheKey: urlObject.href, + url: urlObject.href + }; + } + // Otherwise, construct a properly versioned URL using the custom Workbox + // search parameter along with the revision info. + const cacheKeyURL = new URL(url, location.href); + const originalURL = new URL(url, location.href); + cacheKeyURL.searchParams.set(REVISION_SEARCH_PARAM, revision); + return { + cacheKey: cacheKeyURL.href, + url: originalURL.href + }; + } + + /* + Copyright 2020 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * A plugin, designed to be used with PrecacheController, to determine the + * of assets that were updated (or not updated) during the install event. + * + * @private + */ + class PrecacheInstallReportPlugin { + constructor() { + this.updatedURLs = []; + this.notUpdatedURLs = []; + this.handlerWillStart = async ({ + request, + state + }) => { + // TODO: `state` should never be undefined... + if (state) { + state.originalRequest = request; + } + }; + this.cachedResponseWillBeUsed = async ({ + event, + state, + cachedResponse + }) => { + if (event.type === 'install') { + if (state && state.originalRequest && state.originalRequest instanceof Request) { + // TODO: `state` should never be undefined... + const url = state.originalRequest.url; + if (cachedResponse) { + this.notUpdatedURLs.push(url); + } else { + this.updatedURLs.push(url); + } + } + } + return cachedResponse; + }; + } + } + + /* + Copyright 2020 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * A plugin, designed to be used with PrecacheController, to translate URLs into + * the corresponding cache key, based on the current revision info. + * + * @private + */ + class PrecacheCacheKeyPlugin { + constructor({ + precacheController + }) { + this.cacheKeyWillBeUsed = async ({ + request, + params + }) => { + // Params is type any, can't change right now. + /* eslint-disable */ + const cacheKey = (params === null || params === void 0 ? void 0 : params.cacheKey) || this._precacheController.getCacheKeyForURL(request.url); + /* eslint-enable */ + return cacheKey ? new Request(cacheKey, { + headers: request.headers + }) : request; + }; + this._precacheController = precacheController; + } + } + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * @param {string} groupTitle + * @param {Array} deletedURLs + * + * @private + */ + const logGroup = (groupTitle, deletedURLs) => { + logger.groupCollapsed(groupTitle); + for (const url of deletedURLs) { + logger.log(url); + } + logger.groupEnd(); + }; + /** + * @param {Array} deletedURLs + * + * @private + * @memberof workbox-precaching + */ + function printCleanupDetails(deletedURLs) { + const deletionCount = deletedURLs.length; + if (deletionCount > 0) { + logger.groupCollapsed(`During precaching cleanup, ` + `${deletionCount} cached ` + `request${deletionCount === 1 ? ' was' : 's were'} deleted.`); + logGroup('Deleted Cache Requests', deletedURLs); + logger.groupEnd(); + } + } + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * @param {string} groupTitle + * @param {Array} urls + * + * @private + */ + function _nestedGroup(groupTitle, urls) { + if (urls.length === 0) { + return; + } + logger.groupCollapsed(groupTitle); + for (const url of urls) { + logger.log(url); + } + logger.groupEnd(); + } + /** + * @param {Array} urlsToPrecache + * @param {Array} urlsAlreadyPrecached + * + * @private + * @memberof workbox-precaching + */ + function printInstallDetails(urlsToPrecache, urlsAlreadyPrecached) { + const precachedCount = urlsToPrecache.length; + const alreadyPrecachedCount = urlsAlreadyPrecached.length; + if (precachedCount || alreadyPrecachedCount) { + let message = `Precaching ${precachedCount} file${precachedCount === 1 ? '' : 's'}.`; + if (alreadyPrecachedCount > 0) { + message += ` ${alreadyPrecachedCount} ` + `file${alreadyPrecachedCount === 1 ? ' is' : 's are'} already cached.`; + } + logger.groupCollapsed(message); + _nestedGroup(`View newly precached URLs.`, urlsToPrecache); + _nestedGroup(`View previously precached URLs.`, urlsAlreadyPrecached); + logger.groupEnd(); + } + } + + /* + Copyright 2019 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + let supportStatus; + /** + * A utility function that determines whether the current browser supports + * constructing a new `Response` from a `response.body` stream. + * + * @return {boolean} `true`, if the current browser can successfully + * construct a `Response` from a `response.body` stream, `false` otherwise. + * + * @private + */ + function canConstructResponseFromBodyStream() { + if (supportStatus === undefined) { + const testResponse = new Response(''); + if ('body' in testResponse) { + try { + new Response(testResponse.body); + supportStatus = true; + } catch (error) { + supportStatus = false; + } + } + supportStatus = false; + } + return supportStatus; + } + + /* + Copyright 2019 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * Allows developers to copy a response and modify its `headers`, `status`, + * or `statusText` values (the values settable via a + * [`ResponseInit`]{@link https://developer.mozilla.org/en-US/docs/Web/API/Response/Response#Syntax} + * object in the constructor). + * To modify these values, pass a function as the second argument. That + * function will be invoked with a single object with the response properties + * `{headers, status, statusText}`. The return value of this function will + * be used as the `ResponseInit` for the new `Response`. To change the values + * either modify the passed parameter(s) and return it, or return a totally + * new object. + * + * This method is intentionally limited to same-origin responses, regardless of + * whether CORS was used or not. + * + * @param {Response} response + * @param {Function} modifier + * @memberof workbox-core + */ + async function copyResponse(response, modifier) { + let origin = null; + // If response.url isn't set, assume it's cross-origin and keep origin null. + if (response.url) { + const responseURL = new URL(response.url); + origin = responseURL.origin; + } + if (origin !== self.location.origin) { + throw new WorkboxError('cross-origin-copy-response', { + origin + }); + } + const clonedResponse = response.clone(); + // Create a fresh `ResponseInit` object by cloning the headers. + const responseInit = { + headers: new Headers(clonedResponse.headers), + status: clonedResponse.status, + statusText: clonedResponse.statusText + }; + // Apply any user modifications. + const modifiedResponseInit = modifier ? modifier(responseInit) : responseInit; + // Create the new response from the body stream and `ResponseInit` + // modifications. Note: not all browsers support the Response.body stream, + // so fall back to reading the entire body into memory as a blob. + const body = canConstructResponseFromBodyStream() ? clonedResponse.body : await clonedResponse.blob(); + return new Response(body, modifiedResponseInit); + } + + /* + Copyright 2020 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * A {@link workbox-strategies.Strategy} implementation + * specifically designed to work with + * {@link workbox-precaching.PrecacheController} + * to both cache and fetch precached assets. + * + * Note: an instance of this class is created automatically when creating a + * `PrecacheController`; it's generally not necessary to create this yourself. + * + * @extends workbox-strategies.Strategy + * @memberof workbox-precaching + */ + class PrecacheStrategy extends Strategy { + /** + * + * @param {Object} [options] + * @param {string} [options.cacheName] Cache name to store and retrieve + * requests. Defaults to the cache names provided by + * {@link workbox-core.cacheNames}. + * @param {Array} [options.plugins] {@link https://developers.google.com/web/tools/workbox/guides/using-plugins|Plugins} + * to use in conjunction with this caching strategy. + * @param {Object} [options.fetchOptions] Values passed along to the + * {@link https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/fetch#Parameters|init} + * of all fetch() requests made by this strategy. + * @param {Object} [options.matchOptions] The + * {@link https://w3c.github.io/ServiceWorker/#dictdef-cachequeryoptions|CacheQueryOptions} + * for any `cache.match()` or `cache.put()` calls made by this strategy. + * @param {boolean} [options.fallbackToNetwork=true] Whether to attempt to + * get the response from the network if there's a precache miss. + */ + constructor(options = {}) { + options.cacheName = cacheNames.getPrecacheName(options.cacheName); + super(options); + this._fallbackToNetwork = options.fallbackToNetwork === false ? false : true; + // Redirected responses cannot be used to satisfy a navigation request, so + // any redirected response must be "copied" rather than cloned, so the new + // response doesn't contain the `redirected` flag. See: + // https://bugs.chromium.org/p/chromium/issues/detail?id=669363&desc=2#c1 + this.plugins.push(PrecacheStrategy.copyRedirectedCacheableResponsesPlugin); + } + /** + * @private + * @param {Request|string} request A request to run this strategy for. + * @param {workbox-strategies.StrategyHandler} handler The event that + * triggered the request. + * @return {Promise} + */ + async _handle(request, handler) { + const response = await handler.cacheMatch(request); + if (response) { + return response; + } + // If this is an `install` event for an entry that isn't already cached, + // then populate the cache. + if (handler.event && handler.event.type === 'install') { + return await this._handleInstall(request, handler); + } + // Getting here means something went wrong. An entry that should have been + // precached wasn't found in the cache. + return await this._handleFetch(request, handler); + } + async _handleFetch(request, handler) { + let response; + const params = handler.params || {}; + // Fall back to the network if we're configured to do so. + if (this._fallbackToNetwork) { + { + logger.warn(`The precached response for ` + `${getFriendlyURL(request.url)} in ${this.cacheName} was not ` + `found. Falling back to the network.`); + } + const integrityInManifest = params.integrity; + const integrityInRequest = request.integrity; + const noIntegrityConflict = !integrityInRequest || integrityInRequest === integrityInManifest; + // Do not add integrity if the original request is no-cors + // See https://github.com/GoogleChrome/workbox/issues/3096 + response = await handler.fetch(new Request(request, { + integrity: request.mode !== 'no-cors' ? integrityInRequest || integrityInManifest : undefined + })); + // It's only "safe" to repair the cache if we're using SRI to guarantee + // that the response matches the precache manifest's expectations, + // and there's either a) no integrity property in the incoming request + // or b) there is an integrity, and it matches the precache manifest. + // See https://github.com/GoogleChrome/workbox/issues/2858 + // Also if the original request users no-cors we don't use integrity. + // See https://github.com/GoogleChrome/workbox/issues/3096 + if (integrityInManifest && noIntegrityConflict && request.mode !== 'no-cors') { + this._useDefaultCacheabilityPluginIfNeeded(); + const wasCached = await handler.cachePut(request, response.clone()); + { + if (wasCached) { + logger.log(`A response for ${getFriendlyURL(request.url)} ` + `was used to "repair" the precache.`); + } + } + } + } else { + // This shouldn't normally happen, but there are edge cases: + // https://github.com/GoogleChrome/workbox/issues/1441 + throw new WorkboxError('missing-precache-entry', { + cacheName: this.cacheName, + url: request.url + }); + } + { + const cacheKey = params.cacheKey || (await handler.getCacheKey(request, 'read')); + // Workbox is going to handle the route. + // print the routing details to the console. + logger.groupCollapsed(`Precaching is responding to: ` + getFriendlyURL(request.url)); + logger.log(`Serving the precached url: ${getFriendlyURL(cacheKey instanceof Request ? cacheKey.url : cacheKey)}`); + logger.groupCollapsed(`View request details here.`); + logger.log(request); + logger.groupEnd(); + logger.groupCollapsed(`View response details here.`); + logger.log(response); + logger.groupEnd(); + logger.groupEnd(); + } + return response; + } + async _handleInstall(request, handler) { + this._useDefaultCacheabilityPluginIfNeeded(); + const response = await handler.fetch(request); + // Make sure we defer cachePut() until after we know the response + // should be cached; see https://github.com/GoogleChrome/workbox/issues/2737 + const wasCached = await handler.cachePut(request, response.clone()); + if (!wasCached) { + // Throwing here will lead to the `install` handler failing, which + // we want to do if *any* of the responses aren't safe to cache. + throw new WorkboxError('bad-precaching-response', { + url: request.url, + status: response.status + }); + } + return response; + } + /** + * This method is complex, as there a number of things to account for: + * + * The `plugins` array can be set at construction, and/or it might be added to + * to at any time before the strategy is used. + * + * At the time the strategy is used (i.e. during an `install` event), there + * needs to be at least one plugin that implements `cacheWillUpdate` in the + * array, other than `copyRedirectedCacheableResponsesPlugin`. + * + * - If this method is called and there are no suitable `cacheWillUpdate` + * plugins, we need to add `defaultPrecacheCacheabilityPlugin`. + * + * - If this method is called and there is exactly one `cacheWillUpdate`, then + * we don't have to do anything (this might be a previously added + * `defaultPrecacheCacheabilityPlugin`, or it might be a custom plugin). + * + * - If this method is called and there is more than one `cacheWillUpdate`, + * then we need to check if one is `defaultPrecacheCacheabilityPlugin`. If so, + * we need to remove it. (This situation is unlikely, but it could happen if + * the strategy is used multiple times, the first without a `cacheWillUpdate`, + * and then later on after manually adding a custom `cacheWillUpdate`.) + * + * See https://github.com/GoogleChrome/workbox/issues/2737 for more context. + * + * @private + */ + _useDefaultCacheabilityPluginIfNeeded() { + let defaultPluginIndex = null; + let cacheWillUpdatePluginCount = 0; + for (const [index, plugin] of this.plugins.entries()) { + // Ignore the copy redirected plugin when determining what to do. + if (plugin === PrecacheStrategy.copyRedirectedCacheableResponsesPlugin) { + continue; + } + // Save the default plugin's index, in case it needs to be removed. + if (plugin === PrecacheStrategy.defaultPrecacheCacheabilityPlugin) { + defaultPluginIndex = index; + } + if (plugin.cacheWillUpdate) { + cacheWillUpdatePluginCount++; + } + } + if (cacheWillUpdatePluginCount === 0) { + this.plugins.push(PrecacheStrategy.defaultPrecacheCacheabilityPlugin); + } else if (cacheWillUpdatePluginCount > 1 && defaultPluginIndex !== null) { + // Only remove the default plugin; multiple custom plugins are allowed. + this.plugins.splice(defaultPluginIndex, 1); + } + // Nothing needs to be done if cacheWillUpdatePluginCount is 1 + } + } + + PrecacheStrategy.defaultPrecacheCacheabilityPlugin = { + async cacheWillUpdate({ + response + }) { + if (!response || response.status >= 400) { + return null; + } + return response; + } + }; + PrecacheStrategy.copyRedirectedCacheableResponsesPlugin = { + async cacheWillUpdate({ + response + }) { + return response.redirected ? await copyResponse(response) : response; + } + }; + + /* + Copyright 2019 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * Performs efficient precaching of assets. + * + * @memberof workbox-precaching + */ + class PrecacheController { + /** + * Create a new PrecacheController. + * + * @param {Object} [options] + * @param {string} [options.cacheName] The cache to use for precaching. + * @param {string} [options.plugins] Plugins to use when precaching as well + * as responding to fetch events for precached assets. + * @param {boolean} [options.fallbackToNetwork=true] Whether to attempt to + * get the response from the network if there's a precache miss. + */ + constructor({ + cacheName, + plugins = [], + fallbackToNetwork = true + } = {}) { + this._urlsToCacheKeys = new Map(); + this._urlsToCacheModes = new Map(); + this._cacheKeysToIntegrities = new Map(); + this._strategy = new PrecacheStrategy({ + cacheName: cacheNames.getPrecacheName(cacheName), + plugins: [...plugins, new PrecacheCacheKeyPlugin({ + precacheController: this + })], + fallbackToNetwork + }); + // Bind the install and activate methods to the instance. + this.install = this.install.bind(this); + this.activate = this.activate.bind(this); + } + /** + * @type {workbox-precaching.PrecacheStrategy} The strategy created by this controller and + * used to cache assets and respond to fetch events. + */ + get strategy() { + return this._strategy; + } + /** + * Adds items to the precache list, removing any duplicates and + * stores the files in the + * {@link workbox-core.cacheNames|"precache cache"} when the service + * worker installs. + * + * This method can be called multiple times. + * + * @param {Array} [entries=[]] Array of entries to precache. + */ + precache(entries) { + this.addToCacheList(entries); + if (!this._installAndActiveListenersAdded) { + self.addEventListener('install', this.install); + self.addEventListener('activate', this.activate); + this._installAndActiveListenersAdded = true; + } + } + /** + * This method will add items to the precache list, removing duplicates + * and ensuring the information is valid. + * + * @param {Array} entries + * Array of entries to precache. + */ + addToCacheList(entries) { + { + finalAssertExports.isArray(entries, { + moduleName: 'workbox-precaching', + className: 'PrecacheController', + funcName: 'addToCacheList', + paramName: 'entries' + }); + } + const urlsToWarnAbout = []; + for (const entry of entries) { + // See https://github.com/GoogleChrome/workbox/issues/2259 + if (typeof entry === 'string') { + urlsToWarnAbout.push(entry); + } else if (entry && entry.revision === undefined) { + urlsToWarnAbout.push(entry.url); + } + const { + cacheKey, + url + } = createCacheKey(entry); + const cacheMode = typeof entry !== 'string' && entry.revision ? 'reload' : 'default'; + if (this._urlsToCacheKeys.has(url) && this._urlsToCacheKeys.get(url) !== cacheKey) { + throw new WorkboxError('add-to-cache-list-conflicting-entries', { + firstEntry: this._urlsToCacheKeys.get(url), + secondEntry: cacheKey + }); + } + if (typeof entry !== 'string' && entry.integrity) { + if (this._cacheKeysToIntegrities.has(cacheKey) && this._cacheKeysToIntegrities.get(cacheKey) !== entry.integrity) { + throw new WorkboxError('add-to-cache-list-conflicting-integrities', { + url + }); + } + this._cacheKeysToIntegrities.set(cacheKey, entry.integrity); + } + this._urlsToCacheKeys.set(url, cacheKey); + this._urlsToCacheModes.set(url, cacheMode); + if (urlsToWarnAbout.length > 0) { + const warningMessage = `Workbox is precaching URLs without revision ` + `info: ${urlsToWarnAbout.join(', ')}\nThis is generally NOT safe. ` + `Learn more at https://bit.ly/wb-precache`; + { + logger.warn(warningMessage); + } + } + } + } + /** + * Precaches new and updated assets. Call this method from the service worker + * install event. + * + * Note: this method calls `event.waitUntil()` for you, so you do not need + * to call it yourself in your event handlers. + * + * @param {ExtendableEvent} event + * @return {Promise} + */ + install(event) { + // waitUntil returns Promise + // eslint-disable-next-line @typescript-eslint/no-unsafe-return + return waitUntil(event, async () => { + const installReportPlugin = new PrecacheInstallReportPlugin(); + this.strategy.plugins.push(installReportPlugin); + // Cache entries one at a time. + // See https://github.com/GoogleChrome/workbox/issues/2528 + for (const [url, cacheKey] of this._urlsToCacheKeys) { + const integrity = this._cacheKeysToIntegrities.get(cacheKey); + const cacheMode = this._urlsToCacheModes.get(url); + const request = new Request(url, { + integrity, + cache: cacheMode, + credentials: 'same-origin' + }); + await Promise.all(this.strategy.handleAll({ + params: { + cacheKey + }, + request, + event + })); + } + const { + updatedURLs, + notUpdatedURLs + } = installReportPlugin; + { + printInstallDetails(updatedURLs, notUpdatedURLs); + } + return { + updatedURLs, + notUpdatedURLs + }; + }); + } + /** + * Deletes assets that are no longer present in the current precache manifest. + * Call this method from the service worker activate event. + * + * Note: this method calls `event.waitUntil()` for you, so you do not need + * to call it yourself in your event handlers. + * + * @param {ExtendableEvent} event + * @return {Promise} + */ + activate(event) { + // waitUntil returns Promise + // eslint-disable-next-line @typescript-eslint/no-unsafe-return + return waitUntil(event, async () => { + const cache = await self.caches.open(this.strategy.cacheName); + const currentlyCachedRequests = await cache.keys(); + const expectedCacheKeys = new Set(this._urlsToCacheKeys.values()); + const deletedURLs = []; + for (const request of currentlyCachedRequests) { + if (!expectedCacheKeys.has(request.url)) { + await cache.delete(request); + deletedURLs.push(request.url); + } + } + { + printCleanupDetails(deletedURLs); + } + return { + deletedURLs + }; + }); + } + /** + * Returns a mapping of a precached URL to the corresponding cache key, taking + * into account the revision information for the URL. + * + * @return {Map} A URL to cache key mapping. + */ + getURLsToCacheKeys() { + return this._urlsToCacheKeys; + } + /** + * Returns a list of all the URLs that have been precached by the current + * service worker. + * + * @return {Array} The precached URLs. + */ + getCachedURLs() { + return [...this._urlsToCacheKeys.keys()]; + } + /** + * Returns the cache key used for storing a given URL. If that URL is + * unversioned, like `/index.html', then the cache key will be the original + * URL with a search parameter appended to it. + * + * @param {string} url A URL whose cache key you want to look up. + * @return {string} The versioned URL that corresponds to a cache key + * for the original URL, or undefined if that URL isn't precached. + */ + getCacheKeyForURL(url) { + const urlObject = new URL(url, location.href); + return this._urlsToCacheKeys.get(urlObject.href); + } + /** + * @param {string} url A cache key whose SRI you want to look up. + * @return {string} The subresource integrity associated with the cache key, + * or undefined if it's not set. + */ + getIntegrityForCacheKey(cacheKey) { + return this._cacheKeysToIntegrities.get(cacheKey); + } + /** + * This acts as a drop-in replacement for + * [`cache.match()`](https://developer.mozilla.org/en-US/docs/Web/API/Cache/match) + * with the following differences: + * + * - It knows what the name of the precache is, and only checks in that cache. + * - It allows you to pass in an "original" URL without versioning parameters, + * and it will automatically look up the correct cache key for the currently + * active revision of that URL. + * + * E.g., `matchPrecache('index.html')` will find the correct precached + * response for the currently active service worker, even if the actual cache + * key is `'/index.html?__WB_REVISION__=1234abcd'`. + * + * @param {string|Request} request The key (without revisioning parameters) + * to look up in the precache. + * @return {Promise} + */ + async matchPrecache(request) { + const url = request instanceof Request ? request.url : request; + const cacheKey = this.getCacheKeyForURL(url); + if (cacheKey) { + const cache = await self.caches.open(this.strategy.cacheName); + return cache.match(cacheKey); + } + return undefined; + } + /** + * Returns a function that looks up `url` in the precache (taking into + * account revision information), and returns the corresponding `Response`. + * + * @param {string} url The precached URL which will be used to lookup the + * `Response`. + * @return {workbox-routing~handlerCallback} + */ + createHandlerBoundToURL(url) { + const cacheKey = this.getCacheKeyForURL(url); + if (!cacheKey) { + throw new WorkboxError('non-precached-url', { + url + }); + } + return options => { + options.request = new Request(url); + options.params = Object.assign({ + cacheKey + }, options.params); + return this.strategy.handle(options); + }; + } + } + + /* + Copyright 2019 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + let precacheController; + /** + * @return {PrecacheController} + * @private + */ + const getOrCreatePrecacheController = () => { + if (!precacheController) { + precacheController = new PrecacheController(); + } + return precacheController; + }; + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * Removes any URL search parameters that should be ignored. + * + * @param {URL} urlObject The original URL. + * @param {Array} ignoreURLParametersMatching RegExps to test against + * each search parameter name. Matches mean that the search parameter should be + * ignored. + * @return {URL} The URL with any ignored search parameters removed. + * + * @private + * @memberof workbox-precaching + */ + function removeIgnoredSearchParams(urlObject, ignoreURLParametersMatching = []) { + // Convert the iterable into an array at the start of the loop to make sure + // deletion doesn't mess up iteration. + for (const paramName of [...urlObject.searchParams.keys()]) { + if (ignoreURLParametersMatching.some(regExp => regExp.test(paramName))) { + urlObject.searchParams.delete(paramName); + } + } + return urlObject; + } + + /* + Copyright 2019 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * Generator function that yields possible variations on the original URL to + * check, one at a time. + * + * @param {string} url + * @param {Object} options + * + * @private + * @memberof workbox-precaching + */ + function* generateURLVariations(url, { + ignoreURLParametersMatching = [/^utm_/, /^fbclid$/], + directoryIndex = 'index.html', + cleanURLs = true, + urlManipulation + } = {}) { + const urlObject = new URL(url, location.href); + urlObject.hash = ''; + yield urlObject.href; + const urlWithoutIgnoredParams = removeIgnoredSearchParams(urlObject, ignoreURLParametersMatching); + yield urlWithoutIgnoredParams.href; + if (directoryIndex && urlWithoutIgnoredParams.pathname.endsWith('/')) { + const directoryURL = new URL(urlWithoutIgnoredParams.href); + directoryURL.pathname += directoryIndex; + yield directoryURL.href; + } + if (cleanURLs) { + const cleanURL = new URL(urlWithoutIgnoredParams.href); + cleanURL.pathname += '.html'; + yield cleanURL.href; + } + if (urlManipulation) { + const additionalURLs = urlManipulation({ + url: urlObject + }); + for (const urlToAttempt of additionalURLs) { + yield urlToAttempt.href; + } + } + } + + /* + Copyright 2020 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * A subclass of {@link workbox-routing.Route} that takes a + * {@link workbox-precaching.PrecacheController} + * instance and uses it to match incoming requests and handle fetching + * responses from the precache. + * + * @memberof workbox-precaching + * @extends workbox-routing.Route + */ + class PrecacheRoute extends Route { + /** + * @param {PrecacheController} precacheController A `PrecacheController` + * instance used to both match requests and respond to fetch events. + * @param {Object} [options] Options to control how requests are matched + * against the list of precached URLs. + * @param {string} [options.directoryIndex=index.html] The `directoryIndex` will + * check cache entries for a URLs ending with '/' to see if there is a hit when + * appending the `directoryIndex` value. + * @param {Array} [options.ignoreURLParametersMatching=[/^utm_/, /^fbclid$/]] An + * array of regex's to remove search params when looking for a cache match. + * @param {boolean} [options.cleanURLs=true] The `cleanURLs` option will + * check the cache for the URL with a `.html` added to the end of the end. + * @param {workbox-precaching~urlManipulation} [options.urlManipulation] + * This is a function that should take a URL and return an array of + * alternative URLs that should be checked for precache matches. + */ + constructor(precacheController, options) { + const match = ({ + request + }) => { + const urlsToCacheKeys = precacheController.getURLsToCacheKeys(); + for (const possibleURL of generateURLVariations(request.url, options)) { + const cacheKey = urlsToCacheKeys.get(possibleURL); + if (cacheKey) { + const integrity = precacheController.getIntegrityForCacheKey(cacheKey); + return { + cacheKey, + integrity + }; + } + } + { + logger.debug(`Precaching did not find a match for ` + getFriendlyURL(request.url)); + } + return; + }; + super(match, precacheController.strategy); + } + } + + /* + Copyright 2019 Google LLC + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * Add a `fetch` listener to the service worker that will + * respond to + * [network requests]{@link https://developer.mozilla.org/en-US/docs/Web/API/Service_Worker_API/Using_Service_Workers#Custom_responses_to_requests} + * with precached assets. + * + * Requests for assets that aren't precached, the `FetchEvent` will not be + * responded to, allowing the event to fall through to other `fetch` event + * listeners. + * + * @param {Object} [options] See the {@link workbox-precaching.PrecacheRoute} + * options. + * + * @memberof workbox-precaching + */ + function addRoute(options) { + const precacheController = getOrCreatePrecacheController(); + const precacheRoute = new PrecacheRoute(precacheController, options); + registerRoute(precacheRoute); + } + + /* + Copyright 2019 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * Adds items to the precache list, removing any duplicates and + * stores the files in the + * {@link workbox-core.cacheNames|"precache cache"} when the service + * worker installs. + * + * This method can be called multiple times. + * + * Please note: This method **will not** serve any of the cached files for you. + * It only precaches files. To respond to a network request you call + * {@link workbox-precaching.addRoute}. + * + * If you have a single array of files to precache, you can just call + * {@link workbox-precaching.precacheAndRoute}. + * + * @param {Array} [entries=[]] Array of entries to precache. + * + * @memberof workbox-precaching + */ + function precache(entries) { + const precacheController = getOrCreatePrecacheController(); + precacheController.precache(entries); + } + + /* + Copyright 2019 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * This method will add entries to the precache list and add a route to + * respond to fetch events. + * + * This is a convenience method that will call + * {@link workbox-precaching.precache} and + * {@link workbox-precaching.addRoute} in a single call. + * + * @param {Array} entries Array of entries to precache. + * @param {Object} [options] See the + * {@link workbox-precaching.PrecacheRoute} options. + * + * @memberof workbox-precaching + */ + function precacheAndRoute(entries, options) { + precache(entries); + addRoute(options); + } + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + const SUBSTRING_TO_FIND = '-precache-'; + /** + * Cleans up incompatible precaches that were created by older versions of + * Workbox, by a service worker registered under the current scope. + * + * This is meant to be called as part of the `activate` event. + * + * This should be safe to use as long as you don't include `substringToFind` + * (defaulting to `-precache-`) in your non-precache cache names. + * + * @param {string} currentPrecacheName The cache name currently in use for + * precaching. This cache won't be deleted. + * @param {string} [substringToFind='-precache-'] Cache names which include this + * substring will be deleted (excluding `currentPrecacheName`). + * @return {Array} A list of all the cache names that were deleted. + * + * @private + * @memberof workbox-precaching + */ + const deleteOutdatedCaches = async (currentPrecacheName, substringToFind = SUBSTRING_TO_FIND) => { + const cacheNames = await self.caches.keys(); + const cacheNamesToDelete = cacheNames.filter(cacheName => { + return cacheName.includes(substringToFind) && cacheName.includes(self.registration.scope) && cacheName !== currentPrecacheName; + }); + await Promise.all(cacheNamesToDelete.map(cacheName => self.caches.delete(cacheName))); + return cacheNamesToDelete; + }; + + /* + Copyright 2019 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * Adds an `activate` event listener which will clean up incompatible + * precaches that were created by older versions of Workbox. + * + * @memberof workbox-precaching + */ + function cleanupOutdatedCaches() { + // See https://github.com/Microsoft/TypeScript/issues/28357#issuecomment-436484705 + self.addEventListener('activate', event => { + const cacheName = cacheNames.getPrecacheName(); + event.waitUntil(deleteOutdatedCaches(cacheName).then(cachesDeleted => { + { + if (cachesDeleted.length > 0) { + logger.log(`The following out-of-date precaches were cleaned up ` + `automatically:`, cachesDeleted); + } + } + })); + }); + } + + /* + Copyright 2018 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * NavigationRoute makes it easy to create a + * {@link workbox-routing.Route} that matches for browser + * [navigation requests]{@link https://developers.google.com/web/fundamentals/primers/service-workers/high-performance-loading#first_what_are_navigation_requests}. + * + * It will only match incoming Requests whose + * {@link https://fetch.spec.whatwg.org/#concept-request-mode|mode} + * is set to `navigate`. + * + * You can optionally only apply this route to a subset of navigation requests + * by using one or both of the `denylist` and `allowlist` parameters. + * + * @memberof workbox-routing + * @extends workbox-routing.Route + */ + class NavigationRoute extends Route { + /** + * If both `denylist` and `allowlist` are provided, the `denylist` will + * take precedence and the request will not match this route. + * + * The regular expressions in `allowlist` and `denylist` + * are matched against the concatenated + * [`pathname`]{@link https://developer.mozilla.org/en-US/docs/Web/API/HTMLHyperlinkElementUtils/pathname} + * and [`search`]{@link https://developer.mozilla.org/en-US/docs/Web/API/HTMLHyperlinkElementUtils/search} + * portions of the requested URL. + * + * *Note*: These RegExps may be evaluated against every destination URL during + * a navigation. Avoid using + * [complex RegExps](https://github.com/GoogleChrome/workbox/issues/3077), + * or else your users may see delays when navigating your site. + * + * @param {workbox-routing~handlerCallback} handler A callback + * function that returns a Promise resulting in a Response. + * @param {Object} options + * @param {Array} [options.denylist] If any of these patterns match, + * the route will not handle the request (even if a allowlist RegExp matches). + * @param {Array} [options.allowlist=[/./]] If any of these patterns + * match the URL's pathname and search parameter, the route will handle the + * request (assuming the denylist doesn't match). + */ + constructor(handler, { + allowlist = [/./], + denylist = [] + } = {}) { + { + finalAssertExports.isArrayOfClass(allowlist, RegExp, { + moduleName: 'workbox-routing', + className: 'NavigationRoute', + funcName: 'constructor', + paramName: 'options.allowlist' + }); + finalAssertExports.isArrayOfClass(denylist, RegExp, { + moduleName: 'workbox-routing', + className: 'NavigationRoute', + funcName: 'constructor', + paramName: 'options.denylist' + }); + } + super(options => this._match(options), handler); + this._allowlist = allowlist; + this._denylist = denylist; + } + /** + * Routes match handler. + * + * @param {Object} options + * @param {URL} options.url + * @param {Request} options.request + * @return {boolean} + * + * @private + */ + _match({ + url, + request + }) { + if (request && request.mode !== 'navigate') { + return false; + } + const pathnameAndSearch = url.pathname + url.search; + for (const regExp of this._denylist) { + if (regExp.test(pathnameAndSearch)) { + { + logger.log(`The navigation route ${pathnameAndSearch} is not ` + `being used, since the URL matches this denylist pattern: ` + `${regExp.toString()}`); + } + return false; + } + } + if (this._allowlist.some(regExp => regExp.test(pathnameAndSearch))) { + { + logger.debug(`The navigation route ${pathnameAndSearch} ` + `is being used.`); + } + return true; + } + { + logger.log(`The navigation route ${pathnameAndSearch} is not ` + `being used, since the URL being navigated to doesn't ` + `match the allowlist.`); + } + return false; + } + } + + /* + Copyright 2019 Google LLC + + Use of this source code is governed by an MIT-style + license that can be found in the LICENSE file or at + https://opensource.org/licenses/MIT. + */ + /** + * Helper function that calls + * {@link PrecacheController#createHandlerBoundToURL} on the default + * {@link PrecacheController} instance. + * + * If you are creating your own {@link PrecacheController}, then call the + * {@link PrecacheController#createHandlerBoundToURL} on that instance, + * instead of using this function. + * + * @param {string} url The precached URL which will be used to lookup the + * `Response`. + * @param {boolean} [fallbackToNetwork=true] Whether to attempt to get the + * response from the network if there's a precache miss. + * @return {workbox-routing~handlerCallback} + * + * @memberof workbox-precaching + */ + function createHandlerBoundToURL(url) { + const precacheController = getOrCreatePrecacheController(); + return precacheController.createHandlerBoundToURL(url); + } + + exports.CacheableResponsePlugin = CacheableResponsePlugin; + exports.ExpirationPlugin = ExpirationPlugin; + exports.NavigationRoute = NavigationRoute; + exports.NetworkFirst = NetworkFirst; + exports.cleanupOutdatedCaches = cleanupOutdatedCaches; + exports.clientsClaim = clientsClaim; + exports.createHandlerBoundToURL = createHandlerBoundToURL; + exports.precacheAndRoute = precacheAndRoute; + exports.registerRoute = registerRoute; + +})); diff --git a/dev-dist/workbox-b8fc7838.js b/dev-dist/workbox-b8fc7838.js new file mode 100644 index 0000000..1114e02 --- /dev/null +++ b/dev-dist/workbox-b8fc7838.js @@ -0,0 +1 @@ +define(["exports"],(function(t){"use strict";try{self["workbox:core:6.5.3"]&&_()}catch(t){}const e=(t,...e)=>{let s=t;return e.length>0&&(s+=` :: 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diff --git a/index.html b/index.html index ed4519a..d7cf592 100644 --- a/index.html +++ b/index.html @@ -1,5 +1,5 @@ - + @@ -7,25 +7,15 @@ Pojazdownik - + - - - - - - - - - - + - - - - - + + + +