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51681e80ab
Summary: Pull Request resolved: https://github.com/facebook/react-native/pull/26143 A new useColorScheme hook is provided as the preferred way of accessing the user's preferred color scheme (aka Dark Mode). Changelog: [General] [Added] - useColorScheme hook Reviewed By: yungsters Differential Revision: D16860954 fbshipit-source-id: 8a2b6c2624ed7cf431ab331158bc5456cde1f185
32 lines
786 B
JavaScript
32 lines
786 B
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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* @format
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* @flow
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*/
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'use strict';
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import {useMemo} from 'react';
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import {useSubscription} from 'use-subscription';
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import Appearance from './Appearance';
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import type {ColorSchemeName} from './NativeAppearance';
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export default function useColorScheme(): ?ColorSchemeName {
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const subscription = useMemo(
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() => ({
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getCurrentValue: () => Appearance.getColorScheme(),
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subscribe: callback => {
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Appearance.addChangeListener(callback);
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return () => Appearance.removeChangeListener(callback);
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},
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}),
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[],
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);
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return useSubscription(subscription);
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}
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