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| Viewing file: Select action/file-type: define("./workbox-64f1e998.js",['exports'], function (exports) { 'use strict';
try {
self['workbox:core:5.1.3'] && _();
} 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 _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 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 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
};
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: ${methodToColorMap[method]}`, `border-radius: 0.5em`, `color: white`, `font-weight: bold`, `padding: 2px 0.5em`]; // When in a group, the workbox prefix is not displayed.
const logPrefix = inGroup ? [] : ['%cworkbox', styles.join(';')];
console[method](...logPrefix, ...args);
if (method === 'groupCollapsed') {
inGroup = true;
}
if (method === 'groupEnd') {
inGroup = false;
}
};
const api = {};
const loggerMethods = Object.keys(methodToColorMap);
for (const key of loggerMethods) {
const method = key;
api[method] = (...args) => {
print(method, args);
};
}
return api;
})();
/*
Copyright 2018 Google LLC
Use of this source code is governed by an MIT-style
license that can be found in the LICENSE file or at
https://opensource.org/licenses/MIT.
*/
const messages = {
'invalid-value': ({
paramName,
validValueDescription,
value
}) => {
if (!paramName || !validValueDescription) {
throw new Error(`Unexpected input to 'invalid-value' error.`);
}
return `The '${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.`);
}
return `The parameter '${paramName}' passed into ` + `'${moduleName}.${className ? className + '.' : ''}` + `${funcName}()' must be of type ${expectedType}.`;
},
'incorrect-class': ({
expectedClass,
paramName,
moduleName,
className,
funcName,
isReturnValueProblem
}) => {
if (!expectedClass || !moduleName || !funcName) {
throw new Error(`Unexpected input to 'incorrect-class' error.`);
}
if (isReturnValueProblem) {
return `The return value from ` + `'${moduleName}.${className ? className + '.' : ''}${funcName}()' ` + `must be an instance of class ${expectedClass.name}.`;
}
return `The parameter '${paramName}' passed into ` + `'${moduleName}.${className ? className + '.' : ''}${funcName}()' ` + `must be an instance of class ${expectedClass.name}.`;
},
'missing-a-method': ({
expectedMethod,
paramName,
moduleName,
className,
funcName
}) => {
if (!expectedMethod || !paramName || !moduleName || !className || !funcName) {
throw new Error(`Unexpected input to 'missing-a-method' error.`);
}
return `${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._entryId} 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': ({
thrownError
}) => {
if (!thrownError) {
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: '${thrownError.message}'.`;
},
'invalid-cache-name': ({
cacheNameId,
value
}) => {
if (!cacheNameId) {
throw new Error(`Expected a 'cacheNameId' for error 'invalid-cache-name'`);
}
return `You must provide a name containing at least one character for ` + `setCacheDetails({${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 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 ${url}.`;
}
};
/*
Copyright 2018 Google LLC
Use of this source code is governed by an MIT-style
license that can be found in the LICENSE file or at
https://opensource.org/licenses/MIT.
*/
const generatorFunction = (code, details = {}) => {
const message = messages[code];
if (!message) {
throw new Error(`Unable to find message for code '${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, expectedClass, details) => {
if (!(object instanceof expectedClass)) {
details['expectedClass'] = expectedClass;
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, expectedClass, 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
};
/*
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 quotaErrorCallbacks = new Set();
/*
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 module: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 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 pluginUtils = {
filter: (plugins, callbackName) => {
return plugins.filter(plugin => callbackName in plugin);
}
};
/*
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.
*/
/**
* 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.
*
* @param {Object} options
* @param {Request} options.request
* @param {string} options.mode
* @param {Array<Object>} [options.plugins=[]]
* @return {Promise<Request>}
*
* @private
* @memberof module:workbox-core
*/
const _getEffectiveRequest = async ({
request,
mode,
plugins = []
}) => {
const cacheKeyWillBeUsedPlugins = pluginUtils.filter(plugins, "cacheKeyWillBeUsed"
/* CACHE_KEY_WILL_BE_USED */
);
let effectiveRequest = request;
for (const plugin of cacheKeyWillBeUsedPlugins) {
effectiveRequest = await plugin["cacheKeyWillBeUsed"
/* CACHE_KEY_WILL_BE_USED */
].call(plugin, {
mode,
request: effectiveRequest
});
if (typeof effectiveRequest === 'string') {
effectiveRequest = new Request(effectiveRequest);
}
{
finalAssertExports.isInstance(effectiveRequest, Request, {
moduleName: 'Plugin',
funcName: "cacheKeyWillBeUsed"
/* CACHE_KEY_WILL_BE_USED */
,
isReturnValueProblem: true
});
}
}
return effectiveRequest;
};
/**
* 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 {Object} options
* @param {Request} options.request
* @param {Response} options.response
* @param {Event} [options.event]
* @param {Array<Object>} [options.plugins=[]]
* @return {Promise<Response>}
*
* @private
* @memberof module:workbox-core
*/
const _isResponseSafeToCache = async ({
request,
response,
event,
plugins = []
}) => {
let responseToCache = response;
let pluginsUsed = false;
for (const plugin of plugins) {
if ("cacheWillUpdate"
/* CACHE_WILL_UPDATE */
in plugin) {
pluginsUsed = true;
const pluginMethod = plugin["cacheWillUpdate"
/* CACHE_WILL_UPDATE */
];
responseToCache = await pluginMethod.call(plugin, {
request,
response: responseToCache,
event
});
{
if (responseToCache) {
finalAssertExports.isInstance(responseToCache, Response, {
moduleName: 'Plugin',
funcName: "cacheWillUpdate"
/* CACHE_WILL_UPDATE */
,
isReturnValueProblem: true
});
}
}
if (!responseToCache) {
break;
}
}
}
if (!pluginsUsed) {
{
if (responseToCache) {
if (responseToCache.status !== 200) {
if (responseToCache.status === 0) {
logger.warn(`The response for '${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 '${request.url}' returned ` + `a status code of '${response.status}' and won't be cached as a ` + `result.`);
}
}
}
}
responseToCache = responseToCache && responseToCache.status === 200 ? responseToCache : undefined;
}
return responseToCache ? responseToCache : null;
};
/**
* This is a wrapper around cache.match().
*
* @param {Object} options
* @param {string} options.cacheName Name of the cache to match against.
* @param {Request} options.request The Request that will be used to look up
* cache entries.
* @param {Event} [options.event] The event that prompted the action.
* @param {Object} [options.matchOptions] Options passed to cache.match().
* @param {Array<Object>} [options.plugins=[]] Array of plugins.
* @return {Response} A cached response if available.
*
* @private
* @memberof module:workbox-core
*/
const matchWrapper = async ({
cacheName,
request,
event,
matchOptions,
plugins = []
}) => {
const cache = await self.caches.open(cacheName);
const effectiveRequest = await _getEffectiveRequest({
plugins,
request,
mode: 'read'
});
let cachedResponse = await cache.match(effectiveRequest, matchOptions);
{
if (cachedResponse) {
logger.debug(`Found a cached response in '${cacheName}'.`);
} else {
logger.debug(`No cached response found in '${cacheName}'.`);
}
}
for (const plugin of plugins) {
if ("cachedResponseWillBeUsed"
/* CACHED_RESPONSE_WILL_BE_USED */
in plugin) {
const pluginMethod = plugin["cachedResponseWillBeUsed"
/* CACHED_RESPONSE_WILL_BE_USED */
];
cachedResponse = await pluginMethod.call(plugin, {
cacheName,
event,
matchOptions,
cachedResponse,
request: effectiveRequest
});
{
if (cachedResponse) {
finalAssertExports.isInstance(cachedResponse, Response, {
moduleName: 'Plugin',
funcName: "cachedResponseWillBeUsed"
/* CACHED_RESPONSE_WILL_BE_USED */
,
isReturnValueProblem: true
});
}
}
}
}
return cachedResponse;
};
/**
* Wrapper around cache.put().
*
* Will call `cacheDidUpdate` on plugins if the cache was updated, using
* `matchOptions` when determining what the old entry is.
*
* @param {Object} options
* @param {string} options.cacheName
* @param {Request} options.request
* @param {Response} options.response
* @param {Event} [options.event]
* @param {Array<Object>} [options.plugins=[]]
* @param {Object} [options.matchOptions]
*
* @private
* @memberof module:workbox-core
*/
const putWrapper = async ({
cacheName,
request,
response,
event,
plugins = [],
matchOptions
}) => {
{
if (request.method && request.method !== 'GET') {
throw new WorkboxError('attempt-to-cache-non-get-request', {
url: getFriendlyURL(request.url),
method: request.method
});
}
}
const effectiveRequest = await _getEffectiveRequest({
plugins,
request,
mode: 'write'
});
if (!response) {
{
logger.error(`Cannot cache non-existent response for ` + `'${getFriendlyURL(effectiveRequest.url)}'.`);
}
throw new WorkboxError('cache-put-with-no-response', {
url: getFriendlyURL(effectiveRequest.url)
});
}
const responseToCache = await _isResponseSafeToCache({
event,
plugins,
response,
request: effectiveRequest
});
if (!responseToCache) {
{
logger.debug(`Response '${getFriendlyURL(effectiveRequest.url)}' will ` + `not be cached.`, responseToCache);
}
return;
}
const cache = await self.caches.open(cacheName);
const updatePlugins = pluginUtils.filter(plugins, "cacheDidUpdate"
/* CACHE_DID_UPDATE */
);
const oldResponse = updatePlugins.length > 0 ? await matchWrapper({
cacheName,
matchOptions,
request: effectiveRequest
}) : null;
{
logger.debug(`Updating the '${cacheName}' cache with a new Response for ` + `${getFriendlyURL(effectiveRequest.url)}.`);
}
try {
await cache.put(effectiveRequest, responseToCache);
} catch (error) {
// See https://developer.mozilla.org/en-US/docs/Web/API/DOMException#exception-QuotaExceededError
if (error.name === 'QuotaExceededError') {
await executeQuotaErrorCallbacks();
}
throw error;
}
for (const plugin of updatePlugins) {
await plugin["cacheDidUpdate"
/* CACHE_DID_UPDATE */
].call(plugin, {
cacheName,
event,
oldResponse,
newResponse: responseToCache,
request: effectiveRequest
});
}
};
const cacheWrapper = {
put: putWrapper,
match: matchWrapper
};
/*
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.
*/
/**
* Wrapper around the fetch API.
*
* Will call requestWillFetch on available plugins.
*
* @param {Object} options
* @param {Request|string} options.request
* @param {Object} [options.fetchOptions]
* @param {ExtendableEvent} [options.event]
* @param {Array<Object>} [options.plugins=[]]
* @return {Promise<Response>}
*
* @private
* @memberof module:workbox-core
*/
const wrappedFetch = async ({
request,
fetchOptions,
event,
plugins = []
}) => {
if (typeof request === 'string') {
request = new Request(request);
} // We *should* be able to call `await event.preloadResponse` even if it's
// undefined, but for some reason, doing so leads to errors in our Node unit
// tests. To work around that, explicitly check preloadResponse's value first.
if (event instanceof FetchEvent && event.preloadResponse) {
const possiblePreloadResponse = await event.preloadResponse;
if (possiblePreloadResponse) {
{
logger.log(`Using a preloaded navigation response for ` + `'${getFriendlyURL(request.url)}'`);
}
return possiblePreloadResponse;
}
}
{
finalAssertExports.isInstance(request, Request, {
paramName: 'request',
expectedClass: Request,
moduleName: 'workbox-core',
className: 'fetchWrapper',
funcName: 'wrappedFetch'
});
}
const failedFetchPlugins = pluginUtils.filter(plugins, "fetchDidFail"
/* FETCH_DID_FAIL */
); // If there is a fetchDidFail plugin, we need to save a clone of the
// original request before it's either modified by a requestWillFetch
// plugin or before the original request's body is consumed via fetch().
const originalRequest = failedFetchPlugins.length > 0 ? request.clone() : null;
try {
for (const plugin of plugins) {
if ("requestWillFetch"
/* REQUEST_WILL_FETCH */
in plugin) {
const pluginMethod = plugin["requestWillFetch"
/* REQUEST_WILL_FETCH */
];
const requestClone = request.clone();
request = await pluginMethod.call(plugin, {
request: requestClone,
event
});
if ("development" !== 'production') {
if (request) {
finalAssertExports.isInstance(request, Request, {
moduleName: 'Plugin',
funcName: "cachedResponseWillBeUsed"
/* CACHED_RESPONSE_WILL_BE_USED */
,
isReturnValueProblem: true
});
}
}
}
}
} catch (err) {
throw new WorkboxError('plugin-error-request-will-fetch', {
thrownError: err
});
} // The request can be altered by plugins with `requestWillFetch` making
// the original request (Most likely from a `fetch` event) to be different
// to the Request we make. Pass both to `fetchDidFail` to aid debugging.
const pluginFilteredRequest = request.clone();
try {
let fetchResponse; // See https://github.com/GoogleChrome/workbox/issues/1796
if (request.mode === 'navigate') {
fetchResponse = await fetch(request);
} else {
fetchResponse = await fetch(request, fetchOptions);
}
if ("development" !== 'production') {
logger.debug(`Network request for ` + `'${getFriendlyURL(request.url)}' returned a response with ` + `status '${fetchResponse.status}'.`);
}
for (const plugin of plugins) {
if ("fetchDidSucceed"
/* FETCH_DID_SUCCEED */
in plugin) {
fetchResponse = await plugin["fetchDidSucceed"
/* FETCH_DID_SUCCEED */
].call(plugin, {
event,
request: pluginFilteredRequest,
response: fetchResponse
});
if ("development" !== 'production') {
if (fetchResponse) {
finalAssertExports.isInstance(fetchResponse, Response, {
moduleName: 'Plugin',
funcName: "fetchDidSucceed"
/* FETCH_DID_SUCCEED */
,
isReturnValueProblem: true
});
}
}
}
}
return fetchResponse;
} catch (error) {
{
logger.error(`Network request for ` + `'${getFriendlyURL(request.url)}' threw an error.`, error);
}
for (const plugin of failedFetchPlugins) {
await plugin["fetchDidFail"
/* FETCH_DID_FAIL */
].call(plugin, {
error,
event,
originalRequest: originalRequest.clone(),
request: pluginFilteredRequest.clone()
});
}
throw error;
}
};
const fetchWrapper = {
fetch: wrappedFetch
};
/*
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.
*
* @param {Response} response
* @param {Function} modifier
* @memberof module:workbox-core
*/
async function copyResponse(response, modifier) {
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);
}
try {
self['workbox:precaching:5.1.3'] && _();
} 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 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 module: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 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<string>} deletedURLs
*
* @private
*/
const logGroup = (groupTitle, deletedURLs) => {
logger.groupCollapsed(groupTitle);
for (const url of deletedURLs) {
logger.log(url);
}
logger.groupEnd();
};
/**
* @param {Array<string>} deletedURLs
*
* @private
* @memberof module: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<string>} 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<string>} urlsToPrecache
* @param {Array<string>} urlsAlreadyPrecached
*
* @private
* @memberof module: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.
*/
/**
* Performs efficient precaching of assets.
*
* @memberof module:workbox-precaching
*/
class PrecacheController {
/**
* Create a new PrecacheController.
*
* @param {string} [cacheName] An optional name for the cache, to override
* the default precache name.
*/
constructor(cacheName) {
this._cacheName = cacheNames.getPrecacheName(cacheName);
this._urlsToCacheKeys = new Map();
this._urlsToCacheModes = new Map();
this._cacheKeysToIntegrities = new Map();
}
/**
* This method will add items to the precache list, removing duplicates
* and ensuring the information is valid.
*
* @param {
* Array<module:workbox-precaching.PrecacheController.PrecacheEntry|string>
* } 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.
*
* @param {Object} options
* @param {Event} [options.event] The install event (if needed).
* @param {Array<Object>} [options.plugins] Plugins to be used for fetching
* and caching during install.
* @return {Promise<module:workbox-precaching.InstallResult>}
*/
async install({
event,
plugins
} = {}) {
{
if (plugins) {
finalAssertExports.isArray(plugins, {
moduleName: 'workbox-precaching',
className: 'PrecacheController',
funcName: 'install',
paramName: 'plugins'
});
}
}
const toBePrecached = [];
const alreadyPrecached = [];
const cache = await self.caches.open(this._cacheName);
const alreadyCachedRequests = await cache.keys();
const existingCacheKeys = new Set(alreadyCachedRequests.map(request => request.url));
for (const [url, cacheKey] of this._urlsToCacheKeys) {
if (existingCacheKeys.has(cacheKey)) {
alreadyPrecached.push(url);
} else {
toBePrecached.push({
cacheKey,
url
});
}
}
const precacheRequests = toBePrecached.map(({
cacheKey,
url
}) => {
const integrity = this._cacheKeysToIntegrities.get(cacheKey);
const cacheMode = this._urlsToCacheModes.get(url);
return this._addURLToCache({
cacheKey,
cacheMode,
event,
integrity,
plugins,
url
});
});
await Promise.all(precacheRequests);
const updatedURLs = toBePrecached.map(item => item.url);
{
printInstallDetails(updatedURLs, alreadyPrecached);
}
return {
updatedURLs,
notUpdatedURLs: alreadyPrecached
};
}
/**
* Deletes assets that are no longer present in the current precache manifest.
* Call this method from the service worker activate event.
*
* @return {Promise<module:workbox-precaching.CleanupResult>}
*/
async activate() {
const cache = await self.caches.open(this._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
};
}
/**
* Requests the entry and saves it to the cache if the response is valid.
* By default, any response with a status code of less than 400 (including
* opaque responses) is considered valid.
*
* If you need to use custom criteria to determine what's valid and what
* isn't, then pass in an item in `options.plugins` that implements the
* `cacheWillUpdate()` lifecycle event.
*
* @private
* @param {Object} options
* @param {string} options.cacheKey The string to use a cache key.
* @param {string} options.url The URL to fetch and cache.
* @param {string} [options.cacheMode] The cache mode for the network request.
* @param {Event} [options.event] The install event (if passed).
* @param {Array<Object>} [options.plugins] An array of plugins to apply to
* fetch and caching.
* @param {string} [options.integrity] The value to use for the `integrity`
* field when making the request.
*/
async _addURLToCache({
cacheKey,
url,
cacheMode,
event,
plugins,
integrity
}) {
const request = new Request(url, {
integrity,
cache: cacheMode,
credentials: 'same-origin'
});
let response = await fetchWrapper.fetch({
event,
plugins,
request
}); // Allow developers to override the default logic about what is and isn't
// valid by passing in a plugin implementing cacheWillUpdate(), e.g.
// a `CacheableResponsePlugin` instance.
let cacheWillUpdatePlugin;
for (const plugin of plugins || []) {
if ('cacheWillUpdate' in plugin) {
cacheWillUpdatePlugin = plugin;
}
}
const isValidResponse = cacheWillUpdatePlugin ? // Use a callback if provided. It returns a truthy value if valid.
// NOTE: invoke the method on the plugin instance so the `this` context
// is correct.
await cacheWillUpdatePlugin.cacheWillUpdate({
event,
request,
response
}) : // Otherwise, default to considering any response status under 400 valid.
// This includes, by default, considering opaque responses valid.
response.status < 400; // Consider this a failure, leading to the `install` handler failing, if
// we get back an invalid response.
if (!isValidResponse) {
throw new WorkboxError('bad-precaching-response', {
url,
status: response.status
});
} // 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
if (response.redirected) {
response = await copyResponse(response);
}
await cacheWrapper.put({
event,
plugins,
response,
// `request` already uses `url`. We may be able to reuse it.
request: cacheKey === url ? request : new Request(cacheKey),
cacheName: this._cacheName,
matchOptions: {
ignoreSearch: true
}
});
}
/**
* Returns a mapping of a precached URL to the corresponding cache key, taking
* into account the revision information for the URL.
*
* @return {Map<string, string>} 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<string>} 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);
}
/**
* 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<Response|undefined>}
*/
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._cacheName);
return cache.match(cacheKey);
}
return undefined;
}
/**
* Returns a function that can be used within a
* {@link module:workbox-routing.Route} that will find a response for the
* incoming request against the precache.
*
* If for an unexpected reason there is a cache miss for the request,
* this will fall back to retrieving the `Response` via `fetch()` when
* `fallbackToNetwork` is `true`.
*
* @param {boolean} [fallbackToNetwork=true] Whether to attempt to get the
* response from the network if there's a precache miss.
* @return {module:workbox-routing~handlerCallback}
*/
createHandler(fallbackToNetwork = true) {
return async ({
request
}) => {
try {
const response = await this.matchPrecache(request);
if (response) {
return response;
} // 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 instanceof Request ? request.url : request
});
} catch (error) {
if (fallbackToNetwork) {
{
logger.debug(`Unable to respond with precached response. ` + `Falling back to network.`, error);
}
return fetch(request);
}
throw error;
}
};
}
/**
* Returns a function that looks up `url` in the precache (taking into
* account revision information), and returns the corresponding `Response`.
*
* If for an unexpected reason there is a cache miss when looking up `url`,
* this will fall back to retrieving the `Response` via `fetch()` when
* `fallbackToNetwork` is `true`.
*
* @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 {module:workbox-routing~handlerCallback}
*/
createHandlerBoundToURL(url, fallbackToNetwork = true) {
const cacheKey = this.getCacheKeyForURL(url);
if (!cacheKey) {
throw new WorkboxError('non-precached-url', {
url
});
}
const handler = this.createHandler(fallbackToNetwork);
const request = new Request(url);
return () => handler({
request
});
}
}
/*
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<RegExp>} 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 module: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 module:workbox-precaching
*/
function* generateURLVariations(url, {
ignoreURLParametersMatching,
directoryIndex,
cleanURLs,
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 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 function will take the request URL and manipulate it based on the
* configuration options.
*
* @param {string} url
* @param {Object} options
* @return {string} Returns the URL in the cache that matches the request,
* if possible.
*
* @private
*/
const getCacheKeyForURL = (url, options) => {
const precacheController = getOrCreatePrecacheController();
const urlsToCacheKeys = precacheController.getURLsToCacheKeys();
for (const possibleURL of generateURLVariations(url, options)) {
const possibleCacheKey = urlsToCacheKeys.get(possibleURL);
if (possibleCacheKey) {
return possibleCacheKey;
}
}
};
/*
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 `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.
*
* NOTE: when called more than once this method will replace the previously set
* configuration options. Calling it more than once is not recommended outside
* of tests.
*
* @private
* @param {Object} [options]
* @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<RegExp>} [options.ignoreURLParametersMatching=[/^utm_/]] 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.
*/
const addFetchListener = ({
ignoreURLParametersMatching = [/^utm_/],
directoryIndex = 'index.html',
cleanURLs = true,
urlManipulation
} = {}) => {
const cacheName = cacheNames.getPrecacheName(); // See https://github.com/Microsoft/TypeScript/issues/28357#issuecomment-436484705
self.addEventListener('fetch', event => {
const precachedURL = getCacheKeyForURL(event.request.url, {
cleanURLs,
directoryIndex,
ignoreURLParametersMatching,
urlManipulation
});
if (!precachedURL) {
{
logger.debug(`Precaching did not find a match for ` + getFriendlyURL(event.request.url));
}
return;
}
let responsePromise = self.caches.open(cacheName).then(cache => {
return cache.match(precachedURL);
}).then(cachedResponse => {
if (cachedResponse) {
return cachedResponse;
} // Fall back to the network if we don't have a cached response
// (perhaps due to manual cache cleanup).
{
logger.warn(`The precached response for ` + `${getFriendlyURL(precachedURL)} in ${cacheName} was not found. ` + `Falling back to the network instead.`);
}
return fetch(precachedURL);
});
{
responsePromise = responsePromise.then(response => {
// Workbox is going to handle the route.
// print the routing details to the console.
logger.groupCollapsed(`Precaching is responding to: ` + getFriendlyURL(event.request.url));
logger.log(`Serving the precached url: ${precachedURL}`);
logger.groupCollapsed(`View request details here.`);
logger.log(event.request);
logger.groupEnd();
logger.groupCollapsed(`View response details here.`);
logger.log(response);
logger.groupEnd();
logger.groupEnd();
return response;
});
}
event.respondWith(responsePromise);
});
};
/*
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 listenerAdded = false;
/**
* 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]
* @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<RegExp>} [options.ignoreURLParametersMatching=[/^utm_/]] 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 {module: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.
*
* @memberof module:workbox-precaching
*/
function addRoute(options) {
if (!listenerAdded) {
addFetchListener(options);
listenerAdded = true;
}
}
/*
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 plugins = [];
const precachePlugins = {
/*
* @return {Array}
* @private
*/
get() {
return plugins;
},
/*
* @param {Array} newPlugins
* @private
*/
add(newPlugins) {
plugins.push(...newPlugins);
}
};
/*
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 installListener = event => {
const precacheController = getOrCreatePrecacheController();
const plugins = precachePlugins.get();
event.waitUntil(precacheController.install({
event,
plugins
}).catch(error => {
{
logger.error(`Service worker installation failed. It will ` + `be retried automatically during the next navigation.`);
} // Re-throw the error to ensure installation fails.
throw error;
}));
};
const activateListener = event => {
const precacheController = getOrCreatePrecacheController();
event.waitUntil(precacheController.activate());
};
/**
* Adds items to the precache list, removing any duplicates and
* stores the files in the
* ["precache cache"]{@link module:workbox-core.cacheNames} 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
* [addRoute()]{@link module:workbox-precaching.addRoute}.
*
* If you have a single array of files to precache, you can just call
* [precacheAndRoute()]{@link module:workbox-precaching.precacheAndRoute}.
*
* @param {Array<Object|string>} [entries=[]] Array of entries to precache.
*
* @memberof module:workbox-precaching
*/
function precache(entries) {
const precacheController = getOrCreatePrecacheController();
precacheController.addToCacheList(entries);
if (entries.length > 0) {
// NOTE: these listeners will only be added once (even if the `precache()`
// method is called multiple times) because event listeners are implemented
// as a set, where each listener must be unique.
// See https://github.com/Microsoft/TypeScript/issues/28357#issuecomment-436484705
self.addEventListener('install', installListener);
self.addEventListener('activate', activateListener);
}
}
/*
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
* [precache()]{@link module:workbox-precaching.precache} and
* [addRoute()]{@link module:workbox-precaching.addRoute} in a single call.
*
* @param {Array<Object|string>} entries Array of entries to precache.
* @param {Object} [options] See
* [addRoute() options]{@link module:workbox-precaching.addRoute}.
*
* @memberof module:workbox-precaching
*/
function precacheAndRoute(entries, options) {
precache(entries);
addRoute(options);
}
exports.precacheAndRoute = precacheAndRoute;
});
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