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packages/react/src/ReactCacheClient.js
45 строк
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Sebastian Markbåge
Expose cacheSignal() alongside cache() (#33557)
18 июн 2025, 00:04
Не верифицирован
18 июн 2025, 00:04
e1dc034
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/** * Copyright (c) Meta Platforms, Inc. and its affiliates. * * This source code is licensed under the MIT license found in the * LICENSE file in the root directory of this source tree. * * @flow */ import {disableClientCache} from 'shared/ReactFeatureFlags'; import { cache as cacheImpl, cacheSignal as cacheSignalImpl, } from './ReactCacheImpl'; function noopCache<A: Iterable<mixed>, T>(fn: (...A) => T): (...A) => T { // On the client (i.e. not a Server Components environment) `cache` has // no caching behavior. We just return the function as-is. // // We intend to implement client caching in a future major release. In the // meantime, it's only exposed as an API so that Shared Components can use // per-request caching on the server without breaking on the client. But it // does mean they need to be aware of the behavioral difference. // // The rest of the behavior is the same as the server implementation — it // returns a new reference, extra properties like `displayName` are not // preserved, the length of the new function is 0, etc. That way apps can't // accidentally depend on those details. return function () { // $FlowFixMe[incompatible-call]: We don't want to use rest arguments since we transpile the code. return fn.apply(null, arguments); }; } export const cache: typeof noopCache = disableClientCache ? noopCache : cacheImpl; function noopCacheSignal(): null | AbortSignal { return null; } export const cacheSignal: () => null | AbortSignal = disableClientCache ? noopCacheSignal : cacheSignalImpl;