Node command line infinite loader

loader.js

'use strict';
const readline = require('readline');
const DELAY = 100;

function startLoader() {
    readline.cursorTo(process.stdout, 0);
    process.stdout.write('/');
    setTimeout(loaderStage1, DELAY);
}

function loaderStage1() {
    readline.cursorTo(process.stdout, 0);
    process.stdout.write('-');
    setTimeout(loaderStage2 DELAY);
}

function loaderStage2() {
    readline.cursorTo(process.stdout, 0);
    process.stdout.write('\\');
    setTimeout(loaderStep3, DELAY);
}

function loaderStep3() {
    readline.cursorTo(process.stdout, 0);
    process.stdout.write('|');
    setTimeout(startLoader, DELAY);
}