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184 lines
7.7 KiB
184 lines
7.7 KiB
import { HandlerCallbackOptions, WorkboxPlugin, WorkboxPluginCallbackParam } from 'workbox-core/types.js'; |
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import { Strategy } from './Strategy.js'; |
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import './_version.js'; |
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/** |
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* A class created every time a Strategy instance instance calls |
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* {@link workbox-strategies.Strategy~handle} or |
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* {@link workbox-strategies.Strategy~handleAll} that wraps all fetch and |
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* cache actions around plugin callbacks and keeps track of when the strategy |
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* is "done" (i.e. all added `event.waitUntil()` promises have resolved). |
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* |
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* @memberof workbox-strategies |
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*/ |
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declare class StrategyHandler { |
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request: Request; |
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url?: URL; |
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event: ExtendableEvent; |
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params?: any; |
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private _cacheKeys; |
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private readonly _strategy; |
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private readonly _extendLifetimePromises; |
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private readonly _handlerDeferred; |
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private readonly _plugins; |
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private readonly _pluginStateMap; |
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/** |
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* Creates a new instance associated with the passed strategy and event |
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* that's handling the request. |
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* |
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* The constructor also initializes the state that will be passed to each of |
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* the plugins handling this request. |
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* |
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* @param {workbox-strategies.Strategy} strategy |
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* @param {Object} options |
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* @param {Request|string} options.request A request to run this strategy for. |
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* @param {ExtendableEvent} options.event The event associated with the |
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* request. |
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* @param {URL} [options.url] |
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* @param {*} [options.params] The return value from the |
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* {@link workbox-routing~matchCallback} (if applicable). |
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*/ |
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constructor(strategy: Strategy, options: HandlerCallbackOptions); |
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/** |
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* Fetches a given request (and invokes any applicable plugin callback |
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* methods) using the `fetchOptions` (for non-navigation requests) and |
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* `plugins` defined on the `Strategy` object. |
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* |
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* The following plugin lifecycle methods are invoked when using this method: |
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* - `requestWillFetch()` |
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* - `fetchDidSucceed()` |
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* - `fetchDidFail()` |
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* |
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* @param {Request|string} input The URL or request to fetch. |
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* @return {Promise<Response>} |
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*/ |
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fetch(input: RequestInfo): Promise<Response>; |
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/** |
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* Calls `this.fetch()` and (in the background) runs `this.cachePut()` on |
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* the response generated by `this.fetch()`. |
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* |
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* The call to `this.cachePut()` automatically invokes `this.waitUntil()`, |
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* so you do not have to manually call `waitUntil()` on the event. |
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* |
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* @param {Request|string} input The request or URL to fetch and cache. |
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* @return {Promise<Response>} |
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*/ |
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fetchAndCachePut(input: RequestInfo): Promise<Response>; |
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/** |
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* Matches a request from the cache (and invokes any applicable plugin |
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* callback methods) using the `cacheName`, `matchOptions`, and `plugins` |
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* defined on the strategy object. |
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* |
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* The following plugin lifecycle methods are invoked when using this method: |
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* - cacheKeyWillByUsed() |
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* - cachedResponseWillByUsed() |
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* |
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* @param {Request|string} key The Request or URL to use as the cache key. |
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* @return {Promise<Response|undefined>} A matching response, if found. |
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*/ |
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cacheMatch(key: RequestInfo): Promise<Response | undefined>; |
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/** |
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* Puts a request/response pair in the cache (and invokes any applicable |
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* plugin callback methods) using the `cacheName` and `plugins` defined on |
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* the strategy object. |
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* |
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* The following plugin lifecycle methods are invoked when using this method: |
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* - cacheKeyWillByUsed() |
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* - cacheWillUpdate() |
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* - cacheDidUpdate() |
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* |
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* @param {Request|string} key The request or URL to use as the cache key. |
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* @param {Response} response The response to cache. |
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* @return {Promise<boolean>} `false` if a cacheWillUpdate caused the response |
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* not be cached, and `true` otherwise. |
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*/ |
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cachePut(key: RequestInfo, response: Response): Promise<boolean>; |
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/** |
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* Checks the list of plugins for the `cacheKeyWillBeUsed` callback, and |
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* executes any of those callbacks found in sequence. The final `Request` |
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* object returned by the last plugin is treated as the cache key for cache |
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* reads and/or writes. If no `cacheKeyWillBeUsed` plugin callbacks have |
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* been registered, the passed request is returned unmodified |
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* |
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* @param {Request} request |
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* @param {string} mode |
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* @return {Promise<Request>} |
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*/ |
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getCacheKey(request: Request, mode: 'read' | 'write'): Promise<Request>; |
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/** |
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* Returns true if the strategy has at least one plugin with the given |
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* callback. |
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* |
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* @param {string} name The name of the callback to check for. |
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* @return {boolean} |
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*/ |
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hasCallback<C extends keyof WorkboxPlugin>(name: C): boolean; |
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/** |
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* Runs all plugin callbacks matching the given name, in order, passing the |
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* given param object (merged ith the current plugin state) as the only |
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* argument. |
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* |
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* Note: since this method runs all plugins, it's not suitable for cases |
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* where the return value of a callback needs to be applied prior to calling |
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* the next callback. See |
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* {@link workbox-strategies.StrategyHandler#iterateCallbacks} |
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* below for how to handle that case. |
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* |
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* @param {string} name The name of the callback to run within each plugin. |
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* @param {Object} param The object to pass as the first (and only) param |
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* when executing each callback. This object will be merged with the |
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* current plugin state prior to callback execution. |
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*/ |
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runCallbacks<C extends keyof NonNullable<WorkboxPlugin>>(name: C, param: Omit<WorkboxPluginCallbackParam[C], 'state'>): Promise<void>; |
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/** |
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* Accepts a callback and returns an iterable of matching plugin callbacks, |
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* where each callback is wrapped with the current handler state (i.e. when |
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* you call each callback, whatever object parameter you pass it will |
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* be merged with the plugin's current state). |
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* |
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* @param {string} name The name fo the callback to run |
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* @return {Array<Function>} |
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*/ |
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iterateCallbacks<C extends keyof WorkboxPlugin>(name: C): Generator<NonNullable<WorkboxPlugin[C]>>; |
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/** |
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* Adds a promise to the |
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* [extend lifetime promises]{@link https://w3c.github.io/ServiceWorker/#extendableevent-extend-lifetime-promises} |
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* of the event event associated with the request being handled (usually a |
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* `FetchEvent`). |
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* |
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* Note: you can await |
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* {@link workbox-strategies.StrategyHandler~doneWaiting} |
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* to know when all added promises have settled. |
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* |
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* @param {Promise} promise A promise to add to the extend lifetime promises |
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* of the event that triggered the request. |
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*/ |
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waitUntil<T>(promise: Promise<T>): Promise<T>; |
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/** |
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* Returns a promise that resolves once all promises passed to |
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* {@link workbox-strategies.StrategyHandler~waitUntil} |
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* have settled. |
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* |
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* Note: any work done after `doneWaiting()` settles should be manually |
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* passed to an event's `waitUntil()` method (not this handler's |
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* `waitUntil()` method), otherwise the service worker thread my be killed |
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* prior to your work completing. |
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*/ |
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doneWaiting(): Promise<void>; |
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/** |
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* Stops running the strategy and immediately resolves any pending |
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* `waitUntil()` promises. |
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*/ |
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destroy(): void; |
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/** |
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* This method will call cacheWillUpdate on the available plugins (or use |
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* status === 200) to determine if the Response is safe and valid to cache. |
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* |
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* @param {Request} options.request |
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* @param {Response} options.response |
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* @return {Promise<Response|undefined>} |
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* |
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* @private |
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*/ |
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_ensureResponseSafeToCache(response: Response): Promise<Response | undefined>; |
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} |
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export { StrategyHandler };
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