Nodejs Utililty Methods Array Rotate

Array.prototype.roll = function() {
    var rand = randomNumber(this.length);
    var tem = [];
    for (var i = rand; i < this.length; i++) {
        tem.push(this[i]);
    for (var i = 0; i < rand; i++) {
        tem.push(this[i]);
    return tem;

Array.prototype.rotate = (function () {
    var push = Array.prototype.push,
        splice = Array.prototype.splice;
    return function (count) {
        var len = this.length >>> 0,
            count = count >> 0;
        count = ((count % len) + len) % len;
        push.apply(this, splice.call(this, 0, count));
        return this;
...

Array.prototype.rotate = function ( dir ) {
    var that = this,
        direction = dir !== "ccw",
        columns = that[0].length,
        flat = [],
        tmp = [];
    if ( !(that.length) || !columns ) {
        console.error("incompatible array lengths");
        return false;
...

Array.prototype.rotate = function( n ) {
  this.unshift.apply( this, this.splice( n, this.length ) )
  return this;

Array.prototype.rotate = (function(){
  var unshift = Array.prototype.unshift,
  push=Array.prototype.push,
  splice=Array.prototype.splice;
  return function(count){
    var len=this.length >>>0,
    count = count >> 0;
    count = count % len;
    push.apply(this,splice.call(this,count,len));
...

'use strict';
Array.prototype.rotate = (function() {
    var unshift = Array.prototype.unshift;
    var splice = Array.prototype.splice;
    return function(count) {
        var len = this.length >>> 0;
        count = count >> 0;
        unshift.apply(this, splice.call(this, count % len, len));
        return this;
...

export function zeroOrOne() {
  return Math.round(Math.random() * 1)
export function arrayShuffle(a) {
  let j, x, i;
  for (i = a.length; i; i -= 1) {
    j = Math.floor(Math.random() * i);
    x = a[i - 1];
    a[i - 1] = a[j];
...

Array.prototype.rotate = function (K){
  var N = this.length;
  if( N  < 1 || K < 1 || K > N ){
    return this;
  this.reverse(0, N - K - 1);
  this.reverse(N-K, N-1);
  this.reverse();
  return this;
...

Array.prototype.rotate = function(count)
        var len = this.length >>> 0, 
            count = count >> 0; 
        count = ((count % len) + len) % len;
        var copy = this.clone(this);
        push.apply(copy, splice.call(copy, 0, count));
        return copy;
  };
...

Array.prototype.rotate = function(n) {
  this.unshift.apply(this, this.splice(n + 1, this.length))
  return this;
var arr = [1, 2, 3, 4, 5];
var arr1 = [1, 2, 3, 4, 5];
var rotate = function(arr, r) {
  arr.unshift.apply(arr, arr.splice(r + 1, arr.length));
};
...