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@lightsofapollo
Created March 14, 2016 23:06
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class EventWaiter {
_emitter: EventEmitter;
_event: string;
_promise: Promise<mixed>;
_accept: Function;
_onEvent = (value) => {
this._accept(value);
this._emitter.removeEventListener(this._event, this._onEvent);
};
constructor(emitter: EventEmitter, event: string) {
this._emitter = emitter;
this._event = event;
this._promise = new Promise((accept) => {
this._accept = accept;
emitter.on(event, this._onEvent);
});
}
await(): Promise {
return this._promise;
}
release() {
this._emitter.removeEventListener(this._event, this._onEvent);
this._accept();
}
}
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