const { validate, compare, standardize } = require('mac-address-util');
 
const macAddress = '1-23-45-67-89-ab';
 
if (validate(macAddress)) {
    console.log(compare('01:23:45:67:89:AB', macAddress));
    // => True
    console.log(standardize(macAddress));
    // => '01:23:45:67:89:AB'
}