JSFiddle - React, Tailwind, and code Playground

JavaScript

const app = {
  enums: {
    ROCK: 'ROCK',
    PAPER: 'PAPER',
    SCISSORS: 'SCISSORS',
    DEFAULT_USER_CHOICE: this.ROCK //default, take note of this keyword
  },
  prop: {
    isGameRunning: false
  },
  getMySelection: function(){
    return app.enums.ROCK;
  }
};
alert(app.getMySelection());