pico-signals/es/index.js

A very simple signal library inspired by the 'signals' package

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

class PicoSignals {
  constructor() {
    _defineProperty(this, "listeners", new Set());
  }

  add(listener) {
    this.listeners.add(listener);
    return () => this.delete(listener);
  }

  delete(listener) {
    return this.listeners.delete(listener);
  }

  clear() {
    this.listeners.clear();
  }

  dispatch(...args) {
    this.listeners.forEach(listener => listener(...args));
  }

}

const createPicoSignals = () => new PicoSignals();

export default createPicoSignals;