LZW-Decoding (decompressing) (javascript) (no commentary)

// Decompress an LZW-encoded string
var lzw_decode = function lzw_decode(s,log) {
    if(log !== false){log = true}
    var dict = {};
    var data = (s + "").split("");
    var code = data[0].charCodeAt(0);
    var ocode=code;
    data.splice(0,1);
    var currChar = data[0];
    var oldPhrase = currChar;
    var out = [currChar];
    var phrase;
    load = {now:0,max:data.length,before:0,character:'#'}
    process.stdout.clearLine()
    process.stdout.cursorTo(0)
    if(log){process.stdout.write('decompressing...\n')}
    for (var i=1; i<data.length; i++) {
        load.now = Math.round(100*(i/load.max))
        if(load.before !== load.now && log){
            process.stdout.clearLine()
            process.stdout.cursorTo(0)
            process.stdout.write(load.now+'%')
            process.stdout.cursorTo(5)
            process.stdout.write((load.character).repeat(Math.round(load.now/4)))
            load.before = load.now
        }
        var currCode = data[i].charCodeAt(0);
        if (currCode < ocode) {
            phrase = data[i];
        }
        else {
           phrase = dict[currCode] ? dict[currCode] : (oldPhrase + currChar);
        }
        out.push(phrase);
        currChar = phrase.charAt(0);
        dict[code] = oldPhrase + currChar;
        code++;
        oldPhrase = phrase;
    }
    process.stdout.clearLine()
    process.stdout.cursorTo(0)
    return out.join("");
}