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Текущая директория: /usr/lib/node_modules/bitgo/node_modules/react-native/Libraries/Core

Просмотр файла: RawEventEmitter.js

/**
 * 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 strict-local
 * @format
 */

import type {IEventEmitter} from '../vendor/emitter/EventEmitter';

import EventEmitter from '../vendor/emitter/EventEmitter';

export type RawEventEmitterEvent = $ReadOnly<{
  eventName: string,
  // We expect, but do not/cannot require, that nativeEvent is an object
  // with the properties: key, elementType (string), type (string), tag (numeric),
  // and a stateNode of the native element/Fiber the event was emitted to.
  nativeEvent: {[string]: mixed},
}>;

type RawEventDefinitions = {
  [eventChannel: string]: [RawEventEmitterEvent],
};

const RawEventEmitter: IEventEmitter<RawEventDefinitions> =
  new EventEmitter<RawEventDefinitions>();

// See the React renderer / react repo for how this is used.
// Raw events are emitted here when they are received in JS
// and before any event Plugins process them or before components
// have a chance to respond to them. This allows you to implement
// app-specific perf monitoring, which is unimplemented by default,
// making this entire RawEventEmitter do nothing by default until
// *you* add listeners for your own app.
// Besides perf monitoring and maybe debugging, this RawEventEmitter
// should not be used.
export default RawEventEmitter;

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