82 lines
3.9 KiB
TypeScript
82 lines
3.9 KiB
TypeScript
import { WorkboxPlugin } from 'workbox-core/types.js';
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import { Strategy, StrategyOptions } from 'workbox-strategies/Strategy.js';
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import { StrategyHandler } from 'workbox-strategies/StrategyHandler.js';
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import './_version.js';
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interface PrecacheStrategyOptions extends StrategyOptions {
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fallbackToNetwork?: boolean;
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}
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/**
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* A {@link workbox-strategies.Strategy} implementation
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* specifically designed to work with
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* {@link workbox-precaching.PrecacheController}
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* to both cache and fetch precached assets.
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*
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* Note: an instance of this class is created automatically when creating a
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* `PrecacheController`; it's generally not necessary to create this yourself.
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*
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* @extends workbox-strategies.Strategy
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* @memberof workbox-precaching
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*/
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declare class PrecacheStrategy extends Strategy {
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private readonly _fallbackToNetwork;
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static readonly defaultPrecacheCacheabilityPlugin: WorkboxPlugin;
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static readonly copyRedirectedCacheableResponsesPlugin: WorkboxPlugin;
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/**
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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 the cache names provided by
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* {@link workbox-core.cacheNames}.
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* @param {Array<Object>} [options.plugins] {@link https://developers.google.com/web/tools/workbox/guides/using-plugins|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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* {@link https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/fetch#Parameters|init}
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* of all fetch() requests made by this strategy.
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* @param {Object} [options.matchOptions] The
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* {@link https://w3c.github.io/ServiceWorker/#dictdef-cachequeryoptions|CacheQueryOptions}
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* for any `cache.match()` or `cache.put()` calls made by this strategy.
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* @param {boolean} [options.fallbackToNetwork=true] Whether to attempt to
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* get the response from the network if there's a precache miss.
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*/
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constructor(options?: PrecacheStrategyOptions);
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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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_handleFetch(request: Request, handler: StrategyHandler): Promise<Response>;
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_handleInstall(request: Request, handler: StrategyHandler): Promise<Response>;
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/**
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* This method is complex, as there a number of things to account for:
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*
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* The `plugins` array can be set at construction, and/or it might be added to
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* to at any time before the strategy is used.
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*
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* At the time the strategy is used (i.e. during an `install` event), there
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* needs to be at least one plugin that implements `cacheWillUpdate` in the
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* array, other than `copyRedirectedCacheableResponsesPlugin`.
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*
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* - If this method is called and there are no suitable `cacheWillUpdate`
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* plugins, we need to add `defaultPrecacheCacheabilityPlugin`.
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*
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* - If this method is called and there is exactly one `cacheWillUpdate`, then
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* we don't have to do anything (this might be a previously added
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* `defaultPrecacheCacheabilityPlugin`, or it might be a custom plugin).
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*
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* - If this method is called and there is more than one `cacheWillUpdate`,
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* then we need to check if one is `defaultPrecacheCacheabilityPlugin`. If so,
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* we need to remove it. (This situation is unlikely, but it could happen if
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* the strategy is used multiple times, the first without a `cacheWillUpdate`,
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* and then later on after manually adding a custom `cacheWillUpdate`.)
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*
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* See https://github.com/GoogleChrome/workbox/issues/2737 for more context.
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*
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* @private
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*/
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_useDefaultCacheabilityPluginIfNeeded(): void;
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}
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export { PrecacheStrategy };
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