unicode_normal.js

function normEncoding(string) {
    try {
        return urlEncodeCaseCorrect(encodeURI(path).replace(/%25/g, '%'));
    } catch (e) {
        return string;
    }
}

function urlEncodeCaseCorrect(string) {
    return path.replace(/%[0-9a-fA-F]{2}/g, function(match) {
        return match.toUpperCase();
    });
}

// edit - usage
console.log(normaliseEncoding('💩')) // returns %F0%9F%92%A9