cheat.js

if (typeof cheat === 'undefined') cheat = {
  intervals: {},
  start(f, s){
    if (!f.name) throw 'function must have a name';
    try {this.stop(f.name)} catch {};
    this.intervals[f.name] = setInterval(f, s);
  },
  stop(name){
    if (this.intervals[name] === undefined) throw `${name} does not exist`;
    clearInterval(this.intervals[name]);
    delete this.intervals[name];
  },
  stopAll(){
    Object.keys(this.intervals).forEach(name => this.stop(name));
  },
  qed: 'qed',
};