/**
 * Return flexbox spec versions by prefix
 */
module.exports = function (prefix) {
    let spec;
    if (prefix === '-webkit- 2009' || prefix === '-moz-') {
        spec = 2009;
    } else if (prefix === '-ms-') {
        spec = 2012;
    } else if (prefix === '-webkit-') {
        spec = 'final';
    }

    if (prefix === '-webkit- 2009') {
        prefix = '-webkit-';
    }

    return [spec, prefix];
};