luhn-generator/update/node_modules/es-abstract/helpers/isPrefixOf.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 $strSlice = require('../helpers/callBound')('String.prototype.slice');

module.exports = function isPrefixOf(prefix, string) {
	if (prefix === string) {
		return true;
	}
	if (prefix.length > string.length) {
		return false;
	}
	return $strSlice(string, 0, prefix.length) === prefix;
};