shell bypass 403
'use strict';
/**
* Check if a value is a valid 3, 4, 6 or 8 digit hex
*
* @param {string} value
* @returns {boolean}
*/
module.exports = function (value) {
return /^#(?:[0-9a-fA-F]{3,4}|[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$/.test(value);
};