@web-deps/event-manager/dist/event-manager.es.js

A JavaScript library for managing events. It can be used both on the frontend and backend.

var v = Object.defineProperty;
var b = (t, r, e) => r in t ? v(t, r, { enumerable: !0, configurable: !0, writable: !0, value: e }) : t[r] = e;
var o = (t, r, e) => (b(t, typeof r != "symbol" ? r + "" : r, e), e);
class c {
  constructor(r, e, s) {
    o(this, "name");
    o(this, "subject");
    o(this, "data");
    this.name = r, this.subject = e, s && (this.data = s);
  }
}
class d {
}
class f extends d {
  constructor(e, s) {
    super();
    o(this, "subject");
    o(this, "events");
    o(this, "observers", {});
    this.subject = e, this.events = s;
    for (const i of s)
      this.observers[i] = [];
  }
  eventIsRegistered(e) {
    return this.events.includes(e);
  }
  addObserver(e, s) {
    if (!this.eventIsRegistered(e))
      throw new Error(`
        Failed to add observer.
        Event "${e}" is not registered.
      `);
    this.observers[e].push(s);
  }
  removeObserver(e, s) {
    if (!this.eventIsRegistered(e))
      throw new Error(`
        Failed to remove observer.
        Event "${e}" is not registered.
      `);
    let i = this.observers[e];
    const n = i.indexOf(s);
    n > -1 && i.splice(n, 1);
  }
  notifyObservers(e, s) {
    const i = this.observers[e];
    for (const n of i)
      n(
        new c(e, this.subject, s)
      );
  }
  emit(e, s) {
    if (!this.eventIsRegistered(e))
      throw new Error(`
        Failed to emit event.
        Event "${e}" is not registered.
      `);
    this.notifyObservers(e, s);
  }
}
export {
  c as Event,
  f as EventEmitter
};