Nodejs Utililty Methods String Replace

'use strict';
String.prototype.replaceAll = function(str, replaceStr) {
    return this.replace(new RegExp(str, 'gm'), replaceStr);
};

String.prototype.replaceAll = function(str, replacement) {
  var regex;
  regex = new RegExp(str, "ig");
  return this.replace(regex, replacement);
};

String.prototype.replaceAll = function(str1, str2, ignore) 
  return this.replace(new RegExp(str1.replace(/([\/\,\!\\\^\$\{\}\[\]\(\)\.\*\+\?\|\<\>\-\&])/g,"\\$&"),(ignore?"gi":"g")),(typeof(str2)=="string")?str2.replace(/\$/g,"$$$$"):str2);

'use strict';
String.prototype.replaceAll = function(str1, str2, ignore) 
    return this.replace(new RegExp(str1.replace(/([\/\,\!\\\^\$\{\}\[\]\(\)\.\*\+\?\|\<\>\-\&])/g,"\\$&"),(ignore?"gi":"g")),(typeof(str2)=="string")?str2.replace(/\$/g,"$$$$"):str2);

String.prototype.replaceAll= function(str1,str2){
    return this.replace(new RegExp(str1,"gm"),str2);  
};

String.prototype.replaceAll = function(strReplace, strWith) {
    var reg = new RegExp(strReplace, 'ig');
    return this.replace(reg, strWith);
};

function replaceAll(string, find, replace) {
  return string.replace(new RegExp(escapeRegExp(find), 'g'), replace);

String.prototype.replaceAll = function (stringAntiga, stringNova) {
    return this.split(stringAntiga).join(stringNova);
};

karotz.connectAndStart = function(host, port, callback, data){  
    try{
        karotz.connect(host, port);
      log("connected");
      karotz.start(callback, data);
    }catch(err){
      log(err);
};
...

String.prototype.replaceAll = function(substr, newstring){
    var temp = this;
    var index = temp.indexOf(substr);
    while(index != -1){
        temp = temp.replace(substr, newstring);
        index = temp.indexOf(substr);
    return temp;