Files
react-native/Libraries/vendor/emitter/EmitterSubscription.js
T
James Ide 346417caac Migrate vendored code from Haste to path-based imports (#24807)
Summary:
This is the next step in moving RN towards standard path-based requires. All the requires in `Libraries/vendor` have been rewritten to use relative requires. Talking to cpojer, the vendored code in RN can be modified directly.

This commit uses relative requires instead of `react-native/...` so that if Facebook were to stop syncing out certain folders and therefore remove code from the react-native package, internal code at Facebook would not need to change.

Closes #24769.

[General] [Changed] - Migrate vendored code from Haste to path-based imports
Pull Request resolved: https://github.com/facebook/react-native/pull/24807

Differential Revision: D15316831

Pulled By: cpojer

fbshipit-source-id: 19475823ce9f506600bd09b001156e306bff4db8
2019-05-13 07:37:06 -07:00

60 lines
1.6 KiB
JavaScript

/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @format
* @flow
*/
'use strict';
const EventSubscription = require('./EventSubscription');
import type EventEmitter from './EventEmitter';
import type EventSubscriptionVendor from './EventSubscriptionVendor';
/**
* EmitterSubscription represents a subscription with listener and context data.
*/
class EmitterSubscription extends EventSubscription {
emitter: EventEmitter;
listener: Function;
context: ?Object;
/**
* @param {EventEmitter} emitter - The event emitter that registered this
* subscription
* @param {EventSubscriptionVendor} subscriber - The subscriber that controls
* this subscription
* @param {function} listener - Function to invoke when the specified event is
* emitted
* @param {*} context - Optional context object to use when invoking the
* listener
*/
constructor(
emitter: EventEmitter,
subscriber: EventSubscriptionVendor,
listener: Function,
context: ?Object,
) {
super(subscriber);
this.emitter = emitter;
this.listener = listener;
this.context = context;
}
/**
* Removes this subscription from the emitter that registered it.
* Note: we're overriding the `remove()` method of EventSubscription here
* but deliberately not calling `super.remove()` as the responsibility
* for removing the subscription lies with the EventEmitter.
*/
remove() {
this.emitter.removeSubscription(this);
}
}
module.exports = EmitterSubscription;