Maybe this can help you : https://www.npmjs.com/package/easter-eggs.ts

    new EasterBuilder()
  .setTriggerHandler(new KeyboardInputTrigger()
    .addKeyboardTrigger("KeyL") // Luke Skywalker, obviously
    .addKeyboardTrigger("KeyV") // Vader, the one who really needs to control this situation
    .addKeyboardTrigger("KeyE")) // Everyone knows the force is with you if you press 'E'
  .setActionHandler(new ForceActionHandler(() => alert("The Force is strong with you!")));

You can create easily easter-eggs