game_manager-1.js

class GameManager {
  constructor(socket, remotePlayer, size, InputManager, Actuator, StorageManager) {
    ...
    this.startTiles     = 2;

    // We’ll be deleting these 3 lines
    this.inputManager.on("move", this.move.bind(this));
    this.inputManager.on("restart", this.restart.bind(this));
    this.inputManager.on("keepPlaying", this.keepPlaying.bind(this));
  
    this.remotePlayer = remotePlayer;
    ...