Method del

packages/socket.io-adapter/lib/in-memory-adapter.ts:112–118

* Removes a socket from a room. * * @param {SocketId} id the socket id * @param {Room} room the room name

(id: SocketId, room: Room)

   * @param {Room}     room   the room name
   */
  public del(id: SocketId, room: Room): Promise<void> | void {
    if (this.sids.has(id)) {
      this.sids.get(id).delete(room);
    }

    this._del(room, id);
  }

  private _del(room: Room, id: SocketId) {
    const _room = this.rooms.get(room);