@danielkalen/simplybind/comparison/dist/bower_components/aurelia-binding/doc/example/binding-value-converters/binding-converter-parameters/app.js

Magically simple, framework-less one-way/two-way data binding for frontend/backend in ~5kb.

export class NetWorth {
  constructor() {
    this.update();
    setInterval(() => this.update(), 1000);
  }

  update() {
    this.netWorth = Math.random() * 1000000000;
  }
}