Commit Graph

2 Commits

Author SHA1 Message Date
Tim Yung a3868722f8 Cleanup: Remove `@typechecks`
Reviewed By: spicyj

Differential Revision: D4010629

fbshipit-source-id: b243b2ca09cdfcaeec49b5f6850139d0461b80c5
2016-10-12 19:28:42 -07:00
Nick Lockwood 516bf7bd94 Fixed NativeEventListener deregistration
Summary:
The `EmitterSubscription.remove()` method was previously calling `this.subscriber.removeSubscription(this)` directly, bypassing the mechanism in `NativeEventEmitter` that keeps track of the number of subscriptions.

This meant that native event modules (subclasses of `RCTEventEmitter`) would keep sending events even after all the listeners had been removed. This wasn't a huge overhead, since these modules are singletons and only send one message over the bridge per event, regardless of the number of listeners, but it's still undesirable.

This fixes the problem by routing the `EmitterSubscription.remove()` method through the `EventEmitter` so that `NativeEventEmitter` can apply the additional native calls.

I've also improved the architecture so that each `NativeEventEmitter` uses its own `EventEmitter`, but they currently all still share the same `EventSubscriptionVendor` so that legacy code which registers events via `RCTDeviceEventEmitter` still works.

Reviewed By: vjeux

Differential Revision: D3292361

fbshipit-source-id: d60e881d50351523d2112473703bea826641cdef
2016-05-16 04:13:56 -07:00