Nodejs Utililty Methods String Splice

String.prototype.splice = function( idx, rem, s ) {
    return (this.slice(0,idx) + s + this.slice(idx + Math.abs(rem)));
};

String.prototype.splice = function( idx, rem, s ) {
  return (this.slice(0,idx) + s + this.slice(idx + Math.abs(rem)));
};

String.prototype.splice = function( idx, rem, s ) {
    return (this.slice(0,idx) + s + this.slice(idx + Math.abs(rem)));
};

String.prototype.splice = function( idx, rem, s ) {
    return (this.slice(0,idx) + s + this.slice(idx + Math.abs(rem)));
};

String.prototype.splice = function ( idx, rem, s ) {
  return ( this.slice( 0, idx ) + s + this.slice( idx + Math.abs( rem ) ) );

String.prototype.splice = function(...args) {
  var x = this.split("");
  x.splice(...args);
  return x.join("");
};

String.prototype.splice = function(addedStr, index){
 var substr = this.slice(0, index)
 var rest = this.slice(index, this.length)
 return substr + addedStr + rest;

String.prototype.splice = function (idx, rem, s) {
    return (this.slice(0, idx) + s + this.slice(idx + Math.abs(rem)));
};
function replaceWhiteSpace(text) {
    return (text.split(' ').join(' '));
function replaceWhiteSpace2(text){
    var i, 
        possitions = [];
...

String.prototype.splice = function(idx, rem, str) {
    return this.slice(0, idx) + str + this.slice(idx + Math.abs(rem));
};
module.exports = String.splice;

String.prototype.splice = function(index, count=0, add='') {
  while (index < 0) { index += this.length || (index*-1); }
  return this.slice(0, index) + add + this.slice(index + count);