Tim Yung 87a2e29f59 EventEmitter: Delete once() and removeCurrentListener() ...

Summary:
In an effort to simplify and clean up the `EventEmitter` abstractions in React Native, this removes `once()` and `removeCurrentListener()`. Across the Facebook codebase, there were only two callers of `once()` and no callers of `removeCurrentListener()`.

The same behavior can be achieved using:

```
const subscription = emitter.addListener('event', () => {
  subscription.remove();
  // ...
});
```

Changelog:
[General][Removed] - Removed `once()` and `removeCurrentListener()` fom `DeviceEventEmitter` and `NativeEventEmitter`.

Reviewed By: cpojer

Differential Revision: D22196474

fbshipit-source-id: 06ced186fd812e91d5c57f6580e647c100505807

2020-06-27 02:18:10 -07:00

..

core

Do not explicitly include ".js" in Library imports (#28311)

2020-03-17 02:11:53 -07:00

emitter

EventEmitter: Delete once() and removeCurrentListener()

2020-06-27 02:18:10 -07:00