81 lines
3.3 KiB
TypeScript
81 lines
3.3 KiB
TypeScript
import { Strategy, StrategyOptions } from './Strategy.js';
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import { StrategyHandler } from './StrategyHandler.js';
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import './_version.js';
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export interface NetworkFirstOptions extends StrategyOptions {
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networkTimeoutSeconds?: number;
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}
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/**
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* An implementation of a
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* [network first](https://developer.chrome.com/docs/workbox/caching-strategies-overview/#network-first-falling-back-to-cache)
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* request strategy.
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*
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* By default, this strategy will cache responses with a 200 status code as
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* well as [opaque responses](https://developer.chrome.com/docs/workbox/caching-resources-during-runtime/#opaque-responses).
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* Opaque responses are are cross-origin requests where the response doesn't
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* support [CORS](https://enable-cors.org/).
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*
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* If the network request fails, and there is no cache match, this will throw
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* a `WorkboxError` exception.
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*
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* @extends workbox-strategies.Strategy
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* @memberof workbox-strategies
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*/
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declare class NetworkFirst extends Strategy {
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private readonly _networkTimeoutSeconds;
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/**
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* @param {Object} [options]
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* @param {string} [options.cacheName] Cache name to store and retrieve
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* requests. Defaults to cache names provided by
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* {@link workbox-core.cacheNames}.
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* @param {Array<Object>} [options.plugins] [Plugins]{@link https://developers.google.com/web/tools/workbox/guides/using-plugins}
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* to use in conjunction with this caching strategy.
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* @param {Object} [options.fetchOptions] Values passed along to the
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* [`init`](https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/fetch#Parameters)
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* of [non-navigation](https://github.com/GoogleChrome/workbox/issues/1796)
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* `fetch()` requests made by this strategy.
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* @param {Object} [options.matchOptions] [`CacheQueryOptions`](https://w3c.github.io/ServiceWorker/#dictdef-cachequeryoptions)
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* @param {number} [options.networkTimeoutSeconds] If set, any network requests
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* that fail to respond within the timeout will fallback to the cache.
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*
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* This option can be used to combat
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* "[lie-fi]{@link https://developers.google.com/web/fundamentals/performance/poor-connectivity/#lie-fi}"
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* scenarios.
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*/
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constructor(options?: NetworkFirstOptions);
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/**
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* @private
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* @param {Request|string} request A request to run this strategy for.
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* @param {workbox-strategies.StrategyHandler} handler The event that
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* triggered the request.
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* @return {Promise<Response>}
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*/
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_handle(request: Request, handler: StrategyHandler): Promise<Response>;
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/**
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* @param {Object} options
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* @param {Request} options.request
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* @param {Array} options.logs A reference to the logs array
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* @param {Event} options.event
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* @return {Promise<Response>}
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*
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* @private
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*/
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private _getTimeoutPromise;
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/**
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* @param {Object} options
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* @param {number|undefined} options.timeoutId
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* @param {Request} options.request
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* @param {Array} options.logs A reference to the logs Array.
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* @param {Event} options.event
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* @return {Promise<Response>}
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*
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* @private
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*/
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_getNetworkPromise({ timeoutId, request, logs, handler, }: {
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request: Request;
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logs: any[];
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timeoutId?: number;
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handler: StrategyHandler;
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}): Promise<Response | undefined>;
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}
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export { NetworkFirst };
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