Nice undetermined activity indicator and a progress bar for the terminal

progress.js

var chars = "○○◐●◕◑◔";
var progress_chars = " ▏▎▍▌▋▊▉█";

var p = 0;
var progLen = 8;
function progress() {
    p = 1 + (p % (8 * progLen));
    var r = "";
    for (var i = 0; i < progLen; i++) {
        r += progress_chars[Math.max(0, Math.min(8, p - i * 8))];
    }
    return r + "▏";
}

console.log(" ✔ less");
console.log(" ✘ sass");
var i = 0;

setInterval(() => {
    process.stdout.write("\r " + chars[i = (i + 1) % chars.length] + " " + progress() + "tsc ");
}, 175);