workbox-precaching/PrecacheStrategy.d.ts

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