ts-super-emitter

v1.0.2

A tiny event emitter with events typed end to end - subscribe(), emit(), and once() all infer their argument types from a single Events map, so the wrong event name or payload shape is a compile error, not a runtime bug.

$npm install ts-super-emitternpm github

+Fully typed events - the payload shape is enforced at compile time
+once() for single-fire listeners, subscribe() returns an unsubscribe fn
+clear() for full teardown - no leaked listeners
+Zero dependencies, tiny footprint

// usage

index.ts

import { Emitter } from "ts-super-emitter";
 
type Events = {
  message: [text: string];
};
 
const emitter = new Emitter<Events>();
 
emitter.subscribe("message", (text) => {
  console.log(text);
});
 
emitter.emit("message", "Hello world");

// result

two components, one shared emitter

Sender.tsx

emitter.emit("message", text)

// 0 emitted this session

Receiver.tsx

emitter.subscribe("message", cb)

// waiting for events...