luhn-generator/update/node_modules/string.prototype.trimstart/polyfill.js

A generator of numbers that passes the validation of Luhn algorithm or Luhn formula, also known as the 'modulus 10' or 'mod 10' algorithm

'use strict';

var implementation = require('./implementation');

module.exports = function getPolyfill() {
	if (!String.prototype.trimStart && !String.prototype.trimLeft) {
		return implementation;
	}
	var zeroWidthSpace = '\u200b';
	var trimmed = zeroWidthSpace.trimStart ? zeroWidthSpace.trimStart() : zeroWidthSpace.trimLeft();
	if (trimmed !== zeroWidthSpace) {
		return implementation;
	}
	return String.prototype.trimStart || String.prototype.trimLeft;
};