Tim Yung 15911acd83 EventEmitter: Export EventSubscription Interface ...

Summary:
Changes `EventEmitter.js` to be Flow-typed so that it can export an interface for `EventSubscription`. In order to retain the untyped-ness of `EventEmitter.js`, I moved the entire definition into an untyped `_EventEmitter.js` file (which I hope no one will try importing from).

This new interface will be used to replace all the current type imports of `EventSubscription` and `EmitterSubscription`.

Changelog:
[Internal]

(Note: this ignores all push blocking failures!)

Reviewed By: cpojer

Differential Revision: D22182311

fbshipit-source-id: c604a371a91963116621e89ca63f5a82167090b9

2020-06-23 13:50:26 -07:00

..

core

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

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

emitter

EventEmitter: Export EventSubscription Interface

2020-06-23 13:50:26 -07:00