Method unsubscribe

lib/src/store.ts:362–371

Unregisters the callback (see `subscribe()`)

(subject: string, callback: callback)

  /** Unregisters the callback (see `subscribe()`) */
  unsubscribe(subject: string, callback: callback): void {
    if (subject == undefined) {
      console.warn('Cannot unsubscribe from undefined subject');
      return;
    }
    let callbackArray = this.subscribers.get(subject);
    // Remove the function from the callBackArray
    callbackArray = callbackArray?.filter(item => item !== callback);
    this.subscribers.set(subject, callbackArray);
  }
}

/**