event-stream-pubsub
A simple wrapper around the EventEmitter, allowing us to speak in a pub/sub terms.
Supports in-memory, stateless event streaming out of the box.
installation
npm install --save event-stream-pubsub
usage
// define your event data-type
interface PhotoSelectedEvent {
source: string;
photo: {
width: number;
height: number;
uri: string;
};
}
// instantiate this particular stream
const photoSelectedEventStream = new EventStreamPubSub<PhotoSelectedEvent>();
// add a subscriber
const consumer = (event: PhotoSelectedEvent) => console.log(event);
photoSelectedEventStream.subscribe({ consumer });
// publish to the stream
const exampleEvent = {
source: 'CAMERA_ROLL',
photo: {
width: 1000,
height: 1000,
uri: 'file://...',
},
};
photoSelectedEventStream.publish(exampleEvent);