convert strings into "Pig latin"

piglatin.js

const vowelRegex = new RegExp('^[aeiou]', 'g');
function pigLatin(str){
    if (vowelRegex.test(str)) {
        return `${str}way`;
    } else {
        const first = str.slice(0, 1);
        const rem = str.slice(1, str.length);
        return `${rem}${first}ay`;
    }
}
const testInputs = ['paragraphs', 'california', 'algorithm'];
testInputs.forEach(function (ip) {
    console.log(pigLatin(ip));
});

// output
// aragraphspay
// aliforniacay
// algorithmway