@lifaon/rx-js-light/src/misc/subscription/subscription-class.mjs

Blazing fast Observables

export class Subscription {
  constructor(subscribe, emit) {
    this.subscribe = subscribe;
    this.emit = emit;
    this._unsubscribe = null;
  }
  isActivated() {
    return this._unsubscribe !== null;
  }
  activate() {
    if (this._unsubscribe === null) {
      this._unsubscribe = this.subscribe(this.emit);
    }
    return this;
  }
  deactivate() {
    if (this._unsubscribe !== null) {
      this._unsubscribe();
      this._unsubscribe = null;
    }
    return this;
  }
  toggle(activate = !this.isActivated()) {
    if (activate) {
      return this.activate();
    } else {
      return this.deactivate();
    }
  }
}