Nodejs Utililty Methods String to Pascal Case Convert

String.prototype.toPascalCase = function() {
    return this.charAt(0).toLowerCase() + this.slice(1);
};

function checkVariable(value)
  return ( (value != undefined) && (value != null) );
String.prototype.toPascalCase = function()
  return this.replace(/\w+/g, function(w){return w[0].toUpperCase() + w.slice(1).toLowerCase();});
function thousandsSeparator(value)
...

var isEmpty = function(str) {
  return str && str.length > 0;
};
var isBlank = function(str) {
  return !str || /^\s*$/.test(str);
};
String.prototype.toPascalCase = function() {
  return this.replace(/\w\S*/g, function(txt) {
    return txt.charAt(0).toUpperCase() + txt.substr(1).toLowerCase();
...