Nodejs Utililty Methods String Starts With

String.prototype.StartsWith = function( str )
    return this.indexOf( str ) == 0;
};

String.prototype.starts = function( other ){
  return !!other && other.substr( 0, this.length) == this
function str_starts( that, other ){
  return !!other && other.substr( 0, that.length) == that

String.prototype.startsWith = String.prototype.startsWith || function ( pattern ) {
    return this.lastIndexOf(pattern, 0) === 0;

String.prototype.startsWith = function( str ) {
    if ( str.length > this.length ) {
        return false;
    return( String( this ).substr( 0, str.length ) == str );
};

String.prototype.startsWith = function( value )
  return ( this.substr( 0, value.length ) == value ) ;

const strPro=String.prototype;
String.prototype.startsWith||Object.assign(strPro,{
  startsWith(searchString,position){
    if (position) {
      return this.indexOf(searchString) === position;
    return this.indexOf(searchString)===0;
  },
  endsWith(searchString,position){
...

String.prototype.startsWith||(String.prototype.startsWith=function(e,t){
     return t=t||0,this.substr(t,e.length)===e}
);

String.prototype.startsWith = function (matchString) {
    if (this == matchString)
        return true;
    var matchString = '^' + matchString + '[\x20-\x7E]+$';
    var regex = new RegExp(matchString);
    return !!this.match(regex);
};

String.prototype.startsWith = function(needle) {
    return this.substr(0, needle.length) == needle;

String.prototype.startsWith = function(needle)
    return(this.indexOf(needle) == 0);
};