mirror of
https://github.com/facebook/react-native.git
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Rubén Norte
d87542ee4c
Summary: Having to import `useContext` every time is annoying, so this just creates a convenience function to get it. Changelog: [Internal] Reviewed By: GijsWeterings Differential Revision: D28258305 fbshipit-source-id: 7293478f9baa11711a541f987225108871688e0e
34 lines
1.0 KiB
JavaScript
34 lines
1.0 KiB
JavaScript
/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @flow strict-local
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* @format
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*/
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import * as React from 'react';
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import {useContext} from 'react';
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import GlobalPerformanceLogger from './GlobalPerformanceLogger';
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import type {IPerformanceLogger} from './createPerformanceLogger';
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/**
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* This is a React Context that provides a scoped instance of IPerformanceLogger.
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* We wrap every <AppContainer /> with a Provider for this context so the logger
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* should be available in every component.
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* See React docs about using Context: https://reactjs.org/docs/context.html
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*/
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const PerformanceLoggerContext: React.Context<IPerformanceLogger> = React.createContext(
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GlobalPerformanceLogger,
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);
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if (__DEV__) {
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PerformanceLoggerContext.displayName = 'PerformanceLoggerContext';
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}
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export function usePerformanceLogger(): IPerformanceLogger {
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return useContext(PerformanceLoggerContext);
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}
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export default PerformanceLoggerContext;
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