discourse/public/javascripts/workbox/workbox-strategies.dev.js

1139 lines
35 KiB
JavaScript

this.workbox = this.workbox || {};
this.workbox.strategies = (function (exports, logger_mjs, assert_mjs, cacheNames_mjs, cacheWrapper_mjs, fetchWrapper_mjs, getFriendlyURL_mjs, WorkboxError_mjs) {
'use strict';
try {
self['workbox:strategies:4.3.1'] && _();
} catch (e) {} // eslint-disable-line
/*
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(url, location);
if (urlObj.origin === location.origin) {
return urlObj.pathname;
}
return urlObj.href;
};
const messages = {
strategyStart: (strategyName, request) => `Using ${strategyName} to ` + `respond to '${getFriendlyURL(request.url)}'`,
printFinalResponse: response => {
if (response) {
logger_mjs.logger.groupCollapsed(`View the final response here.`);
logger_mjs.logger.log(response);
logger_mjs.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 [cache-first]{@link https://developers.google.com/web/fundamentals/instant-and-offline/offline-cookbook/#cache-falling-back-to-network}
* request strategy.
*
* A cache first strategy is useful for assets that have been revisioned,
* such as URLs like `/styles/example.a8f5f1.css`, since they
* can be cached for long periods of time.
*
* If the network request fails, and there is no cache match, this will throw
* a `WorkboxError` exception.
*
* @memberof workbox.strategies
*/
class CacheFirst {
/**
* @param {Object} options
* @param {string} options.cacheName Cache name to store and retrieve
* requests. Defaults to cache names provided by
* [workbox-core]{@link workbox.core.cacheNames}.
* @param {Array<Object>} 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 all fetch() requests made by this strategy.
* @param {Object} options.matchOptions [`CacheQueryOptions`](https://w3c.github.io/ServiceWorker/#dictdef-cachequeryoptions)
*/
constructor(options = {}) {
this._cacheName = cacheNames_mjs.cacheNames.getRuntimeName(options.cacheName);
this._plugins = options.plugins || [];
this._fetchOptions = options.fetchOptions || null;
this._matchOptions = options.matchOptions || null;
}
/**
* This method will perform a request strategy and follows an API that
* will work with the
* [Workbox Router]{@link workbox.routing.Router}.
*
* @param {Object} options
* @param {Request} options.request The request to run this strategy for.
* @param {Event} [options.event] The event that triggered the request.
* @return {Promise<Response>}
*/
async handle({
event,
request
}) {
return this.makeRequest({
event,
request: request || event.request
});
}
/**
* This method can be used to perform a make a standalone request outside the
* context of the [Workbox Router]{@link workbox.routing.Router}.
*
* See "[Advanced Recipes](https://developers.google.com/web/tools/workbox/guides/advanced-recipes#make-requests)"
* for more usage information.
*
* @param {Object} options
* @param {Request|string} options.request Either a
* [`Request`]{@link https://developer.mozilla.org/en-US/docs/Web/API/Request}
* object, or a string URL, corresponding to the request to be made.
* @param {FetchEvent} [options.event] If provided, `event.waitUntil()` will
be called automatically to extend the service worker's lifetime.
* @return {Promise<Response>}
*/
async makeRequest({
event,
request
}) {
const logs = [];
if (typeof request === 'string') {
request = new Request(request);
}
{
assert_mjs.assert.isInstance(request, Request, {
moduleName: 'workbox-strategies',
className: 'CacheFirst',
funcName: 'makeRequest',
paramName: 'request'
});
}
let response = await cacheWrapper_mjs.cacheWrapper.match({
cacheName: this._cacheName,
request,
event,
matchOptions: this._matchOptions,
plugins: this._plugins
});
let error;
if (!response) {
{
logs.push(`No response found in the '${this._cacheName}' cache. ` + `Will respond with a network request.`);
}
try {
response = await this._getFromNetwork(request, event);
} catch (err) {
error = err;
}
{
if (response) {
logs.push(`Got response from network.`);
} else {
logs.push(`Unable to get a response from the network.`);
}
}
} else {
{
logs.push(`Found a cached response in the '${this._cacheName}' cache.`);
}
}
{
logger_mjs.logger.groupCollapsed(messages.strategyStart('CacheFirst', request));
for (let log of logs) {
logger_mjs.logger.log(log);
}
messages.printFinalResponse(response);
logger_mjs.logger.groupEnd();
}
if (!response) {
throw new WorkboxError_mjs.WorkboxError('no-response', {
url: request.url,
error
});
}
return response;
}
/**
* Handles the network and cache part of CacheFirst.
*
* @param {Request} request
* @param {FetchEvent} [event]
* @return {Promise<Response>}
*
* @private
*/
async _getFromNetwork(request, event) {
const response = await fetchWrapper_mjs.fetchWrapper.fetch({
request,
event,
fetchOptions: this._fetchOptions,
plugins: this._plugins
}); // Keep the service worker while we put the request to the cache
const responseClone = response.clone();
const cachePutPromise = cacheWrapper_mjs.cacheWrapper.put({
cacheName: this._cacheName,
request,
response: responseClone,
event,
plugins: this._plugins
});
if (event) {
try {
event.waitUntil(cachePutPromise);
} catch (error) {
{
logger_mjs.logger.warn(`Unable to ensure service worker stays alive when ` + `updating cache for '${getFriendlyURL_mjs.getFriendlyURL(request.url)}'.`);
}
}
}
return response;
}
}
/*
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
* [cache-only]{@link https://developers.google.com/web/fundamentals/instant-and-offline/offline-cookbook/#cache-only}
* request strategy.
*
* This class is useful if you want to take advantage of any
* [Workbox plugins]{@link https://developers.google.com/web/tools/workbox/guides/using-plugins}.
*
* If there is no cache match, this will throw a `WorkboxError` exception.
*
* @memberof workbox.strategies
*/
class CacheOnly {
/**
* @param {Object} options
* @param {string} options.cacheName Cache name to store and retrieve
* requests. Defaults to cache names provided by
* [workbox-core]{@link workbox.core.cacheNames}.
* @param {Array<Object>} 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.matchOptions [`CacheQueryOptions`](https://w3c.github.io/ServiceWorker/#dictdef-cachequeryoptions)
*/
constructor(options = {}) {
this._cacheName = cacheNames_mjs.cacheNames.getRuntimeName(options.cacheName);
this._plugins = options.plugins || [];
this._matchOptions = options.matchOptions || null;
}
/**
* This method will perform a request strategy and follows an API that
* will work with the
* [Workbox Router]{@link workbox.routing.Router}.
*
* @param {Object} options
* @param {Request} options.request The request to run this strategy for.
* @param {Event} [options.event] The event that triggered the request.
* @return {Promise<Response>}
*/
async handle({
event,
request
}) {
return this.makeRequest({
event,
request: request || event.request
});
}
/**
* This method can be used to perform a make a standalone request outside the
* context of the [Workbox Router]{@link workbox.routing.Router}.
*
* See "[Advanced Recipes](https://developers.google.com/web/tools/workbox/guides/advanced-recipes#make-requests)"
* for more usage information.
*
* @param {Object} options
* @param {Request|string} options.request Either a
* [`Request`]{@link https://developer.mozilla.org/en-US/docs/Web/API/Request}
* object, or a string URL, corresponding to the request to be made.
* @param {FetchEvent} [options.event] If provided, `event.waitUntil()` will
* be called automatically to extend the service worker's lifetime.
* @return {Promise<Response>}
*/
async makeRequest({
event,
request
}) {
if (typeof request === 'string') {
request = new Request(request);
}
{
assert_mjs.assert.isInstance(request, Request, {
moduleName: 'workbox-strategies',
className: 'CacheOnly',
funcName: 'makeRequest',
paramName: 'request'
});
}
const response = await cacheWrapper_mjs.cacheWrapper.match({
cacheName: this._cacheName,
request,
event,
matchOptions: this._matchOptions,
plugins: this._plugins
});
{
logger_mjs.logger.groupCollapsed(messages.strategyStart('CacheOnly', request));
if (response) {
logger_mjs.logger.log(`Found a cached response in the '${this._cacheName}'` + ` cache.`);
messages.printFinalResponse(response);
} else {
logger_mjs.logger.log(`No response found in the '${this._cacheName}' cache.`);
}
logger_mjs.logger.groupEnd();
}
if (!response) {
throw new WorkboxError_mjs.WorkboxError('no-response', {
url: request.url
});
}
return response;
}
}
/*
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: ({
response
}) => {
if (response.status === 200 || response.status === 0) {
return response;
}
return null;
}
};
/*
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]{@link https://developers.google.com/web/fundamentals/instant-and-offline/offline-cookbook/#network-falling-back-to-cache}
* request strategy.
*
* By default, this strategy will cache responses with a 200 status code as
* well as [opaque responses]{@link https://developers.google.com/web/tools/workbox/guides/handle-third-party-requests}.
* Opaque responses are are cross-origin requests where the response doesn't
* support [CORS]{@link https://enable-cors.org/}.
*
* If the network request fails, and there is no cache match, this will throw
* a `WorkboxError` exception.
*
* @memberof workbox.strategies
*/
class NetworkFirst {
/**
* @param {Object} options
* @param {string} options.cacheName Cache name to store and retrieve
* requests. Defaults to cache names provided by
* [workbox-core]{@link workbox.core.cacheNames}.
* @param {Array<Object>} 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 all 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 = {}) {
this._cacheName = cacheNames_mjs.cacheNames.getRuntimeName(options.cacheName);
if (options.plugins) {
let isUsingCacheWillUpdate = options.plugins.some(plugin => !!plugin.cacheWillUpdate);
this._plugins = isUsingCacheWillUpdate ? options.plugins : [cacheOkAndOpaquePlugin, ...options.plugins];
} else {
// No plugins passed in, use the default plugin.
this._plugins = [cacheOkAndOpaquePlugin];
}
this._networkTimeoutSeconds = options.networkTimeoutSeconds;
{
if (this._networkTimeoutSeconds) {
assert_mjs.assert.isType(this._networkTimeoutSeconds, 'number', {
moduleName: 'workbox-strategies',
className: 'NetworkFirst',
funcName: 'constructor',
paramName: 'networkTimeoutSeconds'
});
}
}
this._fetchOptions = options.fetchOptions || null;
this._matchOptions = options.matchOptions || null;
}
/**
* This method will perform a request strategy and follows an API that
* will work with the
* [Workbox Router]{@link workbox.routing.Router}.
*
* @param {Object} options
* @param {Request} options.request The request to run this strategy for.
* @param {Event} [options.event] The event that triggered the request.
* @return {Promise<Response>}
*/
async handle({
event,
request
}) {
return this.makeRequest({
event,
request: request || event.request
});
}
/**
* This method can be used to perform a make a standalone request outside the
* context of the [Workbox Router]{@link workbox.routing.Router}.
*
* See "[Advanced Recipes](https://developers.google.com/web/tools/workbox/guides/advanced-recipes#make-requests)"
* for more usage information.
*
* @param {Object} options
* @param {Request|string} options.request Either a
* [`Request`]{@link https://developer.mozilla.org/en-US/docs/Web/API/Request}
* object, or a string URL, corresponding to the request to be made.
* @param {FetchEvent} [options.event] If provided, `event.waitUntil()` will
* be called automatically to extend the service worker's lifetime.
* @return {Promise<Response>}
*/
async makeRequest({
event,
request
}) {
const logs = [];
if (typeof request === 'string') {
request = new Request(request);
}
{
assert_mjs.assert.isInstance(request, Request, {
moduleName: 'workbox-strategies',
className: 'NetworkFirst',
funcName: 'handle',
paramName: 'makeRequest'
});
}
const promises = [];
let timeoutId;
if (this._networkTimeoutSeconds) {
const {
id,
promise
} = this._getTimeoutPromise({
request,
event,
logs
});
timeoutId = id;
promises.push(promise);
}
const networkPromise = this._getNetworkPromise({
timeoutId,
request,
event,
logs
});
promises.push(networkPromise); // Promise.race() will resolve as soon as the first promise resolves.
let response = await 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".
if (!response) {
response = await networkPromise;
}
{
logger_mjs.logger.groupCollapsed(messages.strategyStart('NetworkFirst', request));
for (let log of logs) {
logger_mjs.logger.log(log);
}
messages.printFinalResponse(response);
logger_mjs.logger.groupEnd();
}
if (!response) {
throw new WorkboxError_mjs.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<Response>}
*
* @private
*/
_getTimeoutPromise({
request,
logs,
event
}) {
let timeoutId;
const timeoutPromise = new Promise(resolve => {
const onNetworkTimeout = async () => {
{
logs.push(`Timing out the network response at ` + `${this._networkTimeoutSeconds} seconds.`);
}
resolve((await this._respondFromCache({
request,
event
})));
};
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<Response>}
*
* @private
*/
async _getNetworkPromise({
timeoutId,
request,
logs,
event
}) {
let error;
let response;
try {
response = await fetchWrapper_mjs.fetchWrapper.fetch({
request,
event,
fetchOptions: this._fetchOptions,
plugins: this._plugins
});
} catch (err) {
error = err;
}
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 this._respondFromCache({
request,
event
});
{
if (response) {
logs.push(`Found a cached response in the '${this._cacheName}'` + ` cache.`);
} else {
logs.push(`No response found in the '${this._cacheName}' cache.`);
}
}
} else {
// Keep the service worker alive while we put the request in the cache
const responseClone = response.clone();
const cachePut = cacheWrapper_mjs.cacheWrapper.put({
cacheName: this._cacheName,
request,
response: responseClone,
event,
plugins: this._plugins
});
if (event) {
try {
// The event has been responded to so we can keep the SW alive to
// respond to the request
event.waitUntil(cachePut);
} catch (err) {
{
logger_mjs.logger.warn(`Unable to ensure service worker stays alive when ` + `updating cache for '${getFriendlyURL_mjs.getFriendlyURL(request.url)}'.`);
}
}
}
}
return response;
}
/**
* Used if the network timeouts or fails to make the request.
*
* @param {Object} options
* @param {Request} request The request to match in the cache
* @param {Event} [options.event]
* @return {Promise<Object>}
*
* @private
*/
_respondFromCache({
event,
request
}) {
return cacheWrapper_mjs.cacheWrapper.match({
cacheName: this._cacheName,
request,
event,
matchOptions: this._matchOptions,
plugins: this._plugins
});
}
}
/*
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-only]{@link https://developers.google.com/web/fundamentals/instant-and-offline/offline-cookbook/#network-only}
* request strategy.
*
* This class is useful if you want to take advantage of any
* [Workbox plugins]{@link https://developers.google.com/web/tools/workbox/guides/using-plugins}.
*
* If the network request fails, this will throw a `WorkboxError` exception.
*
* @memberof workbox.strategies
*/
class NetworkOnly {
/**
* @param {Object} options
* @param {string} options.cacheName Cache name to store and retrieve
* requests. Defaults to cache names provided by
* [workbox-core]{@link workbox.core.cacheNames}.
* @param {Array<Object>} 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 all fetch() requests made by this strategy.
*/
constructor(options = {}) {
this._cacheName = cacheNames_mjs.cacheNames.getRuntimeName(options.cacheName);
this._plugins = options.plugins || [];
this._fetchOptions = options.fetchOptions || null;
}
/**
* This method will perform a request strategy and follows an API that
* will work with the
* [Workbox Router]{@link workbox.routing.Router}.
*
* @param {Object} options
* @param {Request} options.request The request to run this strategy for.
* @param {Event} [options.event] The event that triggered the request.
* @return {Promise<Response>}
*/
async handle({
event,
request
}) {
return this.makeRequest({
event,
request: request || event.request
});
}
/**
* This method can be used to perform a make a standalone request outside the
* context of the [Workbox Router]{@link workbox.routing.Router}.
*
* See "[Advanced Recipes](https://developers.google.com/web/tools/workbox/guides/advanced-recipes#make-requests)"
* for more usage information.
*
* @param {Object} options
* @param {Request|string} options.request Either a
* [`Request`]{@link https://developer.mozilla.org/en-US/docs/Web/API/Request}
* object, or a string URL, corresponding to the request to be made.
* @param {FetchEvent} [options.event] If provided, `event.waitUntil()` will
* be called automatically to extend the service worker's lifetime.
* @return {Promise<Response>}
*/
async makeRequest({
event,
request
}) {
if (typeof request === 'string') {
request = new Request(request);
}
{
assert_mjs.assert.isInstance(request, Request, {
moduleName: 'workbox-strategies',
className: 'NetworkOnly',
funcName: 'handle',
paramName: 'request'
});
}
let error;
let response;
try {
response = await fetchWrapper_mjs.fetchWrapper.fetch({
request,
event,
fetchOptions: this._fetchOptions,
plugins: this._plugins
});
} catch (err) {
error = err;
}
{
logger_mjs.logger.groupCollapsed(messages.strategyStart('NetworkOnly', request));
if (response) {
logger_mjs.logger.log(`Got response from network.`);
} else {
logger_mjs.logger.log(`Unable to get a response from the network.`);
}
messages.printFinalResponse(response);
logger_mjs.logger.groupEnd();
}
if (!response) {
throw new WorkboxError_mjs.WorkboxError('no-response', {
url: request.url,
error
});
}
return response;
}
}
/*
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
* [stale-while-revalidate]{@link https://developers.google.com/web/fundamentals/instant-and-offline/offline-cookbook/#stale-while-revalidate}
* request strategy.
*
* Resources are requested from both the cache and the network in parallel.
* The strategy will respond with the cached version if available, otherwise
* wait for the network response. The cache is updated with the network response
* with each successful request.
*
* By default, this strategy will cache responses with a 200 status code as
* well as [opaque responses]{@link https://developers.google.com/web/tools/workbox/guides/handle-third-party-requests}.
* Opaque responses are are cross-origin requests where the response doesn't
* support [CORS]{@link https://enable-cors.org/}.
*
* If the network request fails, and there is no cache match, this will throw
* a `WorkboxError` exception.
*
* @memberof workbox.strategies
*/
class StaleWhileRevalidate {
/**
* @param {Object} options
* @param {string} options.cacheName Cache name to store and retrieve
* requests. Defaults to cache names provided by
* [workbox-core]{@link workbox.core.cacheNames}.
* @param {Array<Object>} 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 all fetch() requests made by this strategy.
* @param {Object} options.matchOptions [`CacheQueryOptions`](https://w3c.github.io/ServiceWorker/#dictdef-cachequeryoptions)
*/
constructor(options = {}) {
this._cacheName = cacheNames_mjs.cacheNames.getRuntimeName(options.cacheName);
this._plugins = options.plugins || [];
if (options.plugins) {
let isUsingCacheWillUpdate = options.plugins.some(plugin => !!plugin.cacheWillUpdate);
this._plugins = isUsingCacheWillUpdate ? options.plugins : [cacheOkAndOpaquePlugin, ...options.plugins];
} else {
// No plugins passed in, use the default plugin.
this._plugins = [cacheOkAndOpaquePlugin];
}
this._fetchOptions = options.fetchOptions || null;
this._matchOptions = options.matchOptions || null;
}
/**
* This method will perform a request strategy and follows an API that
* will work with the
* [Workbox Router]{@link workbox.routing.Router}.
*
* @param {Object} options
* @param {Request} options.request The request to run this strategy for.
* @param {Event} [options.event] The event that triggered the request.
* @return {Promise<Response>}
*/
async handle({
event,
request
}) {
return this.makeRequest({
event,
request: request || event.request
});
}
/**
* This method can be used to perform a make a standalone request outside the
* context of the [Workbox Router]{@link workbox.routing.Router}.
*
* See "[Advanced Recipes](https://developers.google.com/web/tools/workbox/guides/advanced-recipes#make-requests)"
* for more usage information.
*
* @param {Object} options
* @param {Request|string} options.request Either a
* [`Request`]{@link https://developer.mozilla.org/en-US/docs/Web/API/Request}
* object, or a string URL, corresponding to the request to be made.
* @param {FetchEvent} [options.event] If provided, `event.waitUntil()` will
* be called automatically to extend the service worker's lifetime.
* @return {Promise<Response>}
*/
async makeRequest({
event,
request
}) {
const logs = [];
if (typeof request === 'string') {
request = new Request(request);
}
{
assert_mjs.assert.isInstance(request, Request, {
moduleName: 'workbox-strategies',
className: 'StaleWhileRevalidate',
funcName: 'handle',
paramName: 'request'
});
}
const fetchAndCachePromise = this._getFromNetwork({
request,
event
});
let response = await cacheWrapper_mjs.cacheWrapper.match({
cacheName: this._cacheName,
request,
event,
matchOptions: this._matchOptions,
plugins: this._plugins
});
let error;
if (response) {
{
logs.push(`Found a cached response in the '${this._cacheName}'` + ` cache. Will update with the network response in the background.`);
}
if (event) {
try {
event.waitUntil(fetchAndCachePromise);
} catch (error) {
{
logger_mjs.logger.warn(`Unable to ensure service worker stays alive when ` + `updating cache for '${getFriendlyURL_mjs.getFriendlyURL(request.url)}'.`);
}
}
}
} else {
{
logs.push(`No response found in the '${this._cacheName}' cache. ` + `Will wait for the network response.`);
}
try {
response = await fetchAndCachePromise;
} catch (err) {
error = err;
}
}
{
logger_mjs.logger.groupCollapsed(messages.strategyStart('StaleWhileRevalidate', request));
for (let log of logs) {
logger_mjs.logger.log(log);
}
messages.printFinalResponse(response);
logger_mjs.logger.groupEnd();
}
if (!response) {
throw new WorkboxError_mjs.WorkboxError('no-response', {
url: request.url,
error
});
}
return response;
}
/**
* @param {Object} options
* @param {Request} options.request
* @param {Event} [options.event]
* @return {Promise<Response>}
*
* @private
*/
async _getFromNetwork({
request,
event
}) {
const response = await fetchWrapper_mjs.fetchWrapper.fetch({
request,
event,
fetchOptions: this._fetchOptions,
plugins: this._plugins
});
const cachePutPromise = cacheWrapper_mjs.cacheWrapper.put({
cacheName: this._cacheName,
request,
response: response.clone(),
event,
plugins: this._plugins
});
if (event) {
try {
event.waitUntil(cachePutPromise);
} catch (error) {
{
logger_mjs.logger.warn(`Unable to ensure service worker stays alive when ` + `updating cache for '${getFriendlyURL_mjs.getFriendlyURL(request.url)}'.`);
}
}
}
return response;
}
}
/*
Copyright 2018 Google LLC
Use of this source code is governed by an MIT-style
license that can be found in the LICENSE file or at
https://opensource.org/licenses/MIT.
*/
const mapping = {
cacheFirst: CacheFirst,
cacheOnly: CacheOnly,
networkFirst: NetworkFirst,
networkOnly: NetworkOnly,
staleWhileRevalidate: StaleWhileRevalidate
};
const deprecate = strategy => {
const StrategyCtr = mapping[strategy];
return options => {
{
const strategyCtrName = strategy[0].toUpperCase() + strategy.slice(1);
logger_mjs.logger.warn(`The 'workbox.strategies.${strategy}()' function has been ` + `deprecated and will be removed in a future version of Workbox.\n` + `Please use 'new workbox.strategies.${strategyCtrName}()' instead.`);
}
return new StrategyCtr(options);
};
};
/**
* @function workbox.strategies.cacheFirst
* @param {Object} options See the {@link workbox.strategies.CacheFirst}
* constructor for more info.
* @deprecated since v4.0.0
*/
const cacheFirst = deprecate('cacheFirst');
/**
* @function workbox.strategies.cacheOnly
* @param {Object} options See the {@link workbox.strategies.CacheOnly}
* constructor for more info.
* @deprecated since v4.0.0
*/
const cacheOnly = deprecate('cacheOnly');
/**
* @function workbox.strategies.networkFirst
* @param {Object} options See the {@link workbox.strategies.NetworkFirst}
* constructor for more info.
* @deprecated since v4.0.0
*/
const networkFirst = deprecate('networkFirst');
/**
* @function workbox.strategies.networkOnly
* @param {Object} options See the {@link workbox.strategies.NetworkOnly}
* constructor for more info.
* @deprecated since v4.0.0
*/
const networkOnly = deprecate('networkOnly');
/**
* @function workbox.strategies.staleWhileRevalidate
* @param {Object} options See the
* {@link workbox.strategies.StaleWhileRevalidate} constructor for more info.
* @deprecated since v4.0.0
*/
const staleWhileRevalidate = deprecate('staleWhileRevalidate');
exports.CacheFirst = CacheFirst;
exports.CacheOnly = CacheOnly;
exports.NetworkFirst = NetworkFirst;
exports.NetworkOnly = NetworkOnly;
exports.StaleWhileRevalidate = StaleWhileRevalidate;
exports.cacheFirst = cacheFirst;
exports.cacheOnly = cacheOnly;
exports.networkFirst = networkFirst;
exports.networkOnly = networkOnly;
exports.staleWhileRevalidate = staleWhileRevalidate;
return exports;
}({}, workbox.core._private, workbox.core._private, workbox.core._private, workbox.core._private, workbox.core._private, workbox.core._private, workbox.core._private));
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