Usage no npm install needed!

<script type="module">
  import nunogcrochaTypescriptEventBus from 'https://cdn.skypack.dev/@nunogcrocha/typescript-event-bus';
</script>

README

TypeScript Event Bus

Main Features

Typed interfaces and callbacks
Middleware
No external dependencies (e.g. rxjs)

Install

npm i -S @nunogcrocha/typescript-event-bus

Example Usage

// Instanciate it with or without middleware
const eb = new EventBus();
// or
const middlewareFn = (e: IDomainEvent<{}>, next: MiddlewareNext<{}>) => {
  logs.push(new DomainEvent<{}>(e.channel, e.payload).toJSON())
  next(e)
}
const eb = new EventBus([middlewareFn]);

// Register event handlers
eb.register({
  channel: 'b',
  callback: payload => console.log("payload", payload)
});

// Emit events
eb.trigger(
  new DomainEvent<{}>('b', {
    test: true
  })
);

// Clear handlers
eb.unregister('b');
// or
eb.unregisterAll();