Strongly Typed Events - Signals

Signals are the most barebone of all events. They don't contain any data. They just invoke the registered handler.

Subscription made easy

An example says more than a 1000 words. Imagine if you have events like this on your class:

1let clock = new Clock("Smu", 1000);
2
3//log the ticks to the console - this is a signal event
4clock.onTick.subscribe(() => console.log("Tick!"));
5

Events made easy

So let's look at the implementation from a TypeScript perspective. (Do you program NodeJs without typescript? Check this)

1import { SignalDispatcher } from "ste-signals";
2
3class Clock {
4  private _onTick = new SignalDispatcher();
5  private _ticks: number = 0;
6
7  constructor(public name: string, timeout: number) {
8    setInterval(() => {
9      this._ticks += 1;
10      this._onTick.dispatch();
11    }, timeout);
12  }
13
14  public get onTick() {
15    return this._onTick.asEvent();
16  }
17}

Check the documentation or the examples for more information.

Need more info? Check the repo.

Maintenance

This project is maintained by Kees C. Bakker.