functions.js

module.exports.sleep = function(time) {
	return new Promise((resolve) => setTimeout(resolve, time));
}

module.exports.log = function (msg) { 
  console.log(new Date().toISOString().replace("T", " ").substr(0, 19), msg); 
}                          

module.exports.runInterval = function(func, wait, times){
  let interv = function(w, t){
    return function(){
      if (typeof t === "undefined" || t-- > 0){
        setTimeout(interv, w);
        try {
          func.call(null);
        }
        catch(e){
          t = 0;
          throw e.toString();
        }
      }
    };
  }(wait, times);
  setTimeout(interv, wait);
};

// check if y array includes any x 
module.exports.arrayInArray = function(x, y) {
  if (!x) { return false; }
  if (!y) { return false; }
  if (!x.constructor === Array) return false;
  if (!y.constructor === Array) return false;
  if (typeof x !== "object") { return false; }
  if (!Array.isArray(x)) { return false; }
  return x.some(r => y.includes(r));
}

module.exports.shuffle = function(a) {
    var j, x, i;
    for (i = a.length - 1; i > 0; i--) {
        j = Math.floor(Math.random() * (i + 1));
        x = a[i];
        a[i] = a[j];
        a[j] = x;
    }
    return a;
}