42 строки
981 B
JavaScript
42 строки
981 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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module.exports = require('../Components/UnimplementedViews/UnimplementedView');
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type BackPressEventName = 'backPress' | 'hardwareBackPress';
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function emptyFunction(): void {}
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type TBackHandler = {|
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+exitApp: () => void,
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+addEventListener: (
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eventName: BackPressEventName,
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handler: () => ?boolean,
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) => {remove: () => void, ...},
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+removeEventListener: (
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eventName: BackPressEventName,
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handler: () => ?boolean,
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) => void,
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|};
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let BackHandler: TBackHandler = {
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exitApp: emptyFunction,
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addEventListener(_eventName: BackPressEventName, _handler: Function) {
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return {
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remove: emptyFunction,
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};
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},
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removeEventListener(_eventName: BackPressEventName, _handler: Function) {},
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};
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module.exports = BackHandler;
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