mirror of
https://github.com/facebook/react-native.git
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Tim YungandFacebook GitHub Bot
c8c975f0d7
Summary: Removes the checks in `RCTDeviceEventEmitter` that were initially added to migrate call sites to other modules when `NativeEventEmitter` was introduced. This set of checks is problematic for a few reasons: 1. Does not cover many other events that have since been introduced, so the small list covered is arbitrary. 2. Prevents composition of `RCTDeviceEventEmitter` in the implementation of those modules. 3. Code bloat. Changelog: [General][Removed] - `RCTDeviceEventEmitter` no longer throws for `SttatusBar`, `Keyboard`, and `AppState` events. However, you are still recommended to use the more appropriate modules for listening to these events. Reviewed By: lunaleaps Differential Revision: D26163602 fbshipit-source-id: 316287bfdf2947fe85d022a3f83a205e89c432ba
45 lines
1.4 KiB
JavaScript
45 lines
1.4 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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* @format
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* @flow
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*/
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import EventEmitter from '../vendor/emitter/EventEmitter';
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import type EmitterSubscription from '../vendor/emitter/_EmitterSubscription';
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import EventSubscriptionVendor from '../vendor/emitter/_EventSubscriptionVendor';
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/**
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* Deprecated - subclass NativeEventEmitter to create granular event modules instead of
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* adding all event listeners directly to RCTDeviceEventEmitter.
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*/
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class RCTDeviceEventEmitter<
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EventDefinitions: {...},
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> extends EventEmitter<EventDefinitions> {
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sharedSubscriber: EventSubscriptionVendor<EventDefinitions>;
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constructor() {
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const sharedSubscriber = new EventSubscriptionVendor<EventDefinitions>();
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super(sharedSubscriber);
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this.sharedSubscriber = sharedSubscriber;
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}
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removeSubscription<K: $Keys<EventDefinitions>>(
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subscription: EmitterSubscription<EventDefinitions, K>,
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): void {
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if (subscription.emitter !== this) {
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subscription.emitter.removeSubscription(subscription);
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} else {
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super.removeSubscription(subscription);
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}
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}
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}
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// FIXME: use typed events
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type RCTDeviceEventDefinitions = $FlowFixMe;
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export default (new RCTDeviceEventEmitter(): RCTDeviceEventEmitter<RCTDeviceEventDefinitions>);
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