Files
react/packages/react-server/src/forks/ReactFlightServerConfig.dom-node-esm.js
Sebastian Markbåge d5c303427e [Flight] Track Owner on AsyncLocalStorage When Available (#28807)
Stacked on #28798.

Add another AsyncLocalStorage to the FlightServerConfig. This context
tracks data on a per component level. Currently the only thing we track
is the owner in DEV.

AsyncLocalStorage around each component comes with a performance cost so
we only do it DEV. It's not generally a particularly safe operation
because you can't necessarily associate side-effects with a component
based on execution scope. It can be a lazy initializer or cache():ed
code etc. We also don't support string refs anymore for a reason.

However, it's good enough for optional dev only information like the
owner.
2024-05-03 16:29:00 -04:00

28 lines
991 B
JavaScript

/**
* Copyright (c) Meta Platforms, Inc. and 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 {AsyncLocalStorage} from 'async_hooks';
import type {Request} from 'react-server/src/ReactFlightServer';
import type {ReactComponentInfo} from 'shared/ReactTypes';
export * from 'react-server-dom-esm/src/ReactFlightServerConfigESMBundler';
export * from 'react-dom-bindings/src/server/ReactFlightServerConfigDOM';
export const supportsRequestStorage = true;
export const requestStorage: AsyncLocalStorage<Request | void> =
new AsyncLocalStorage();
export const supportsComponentStorage = __DEV__;
export const componentStorage: AsyncLocalStorage<ReactComponentInfo | void> =
supportsComponentStorage ? new AsyncLocalStorage() : (null: any);
export {createHook as createAsyncHook, executionAsyncId} from 'async_hooks';
export * from '../ReactFlightServerConfigDebugNode';