Jevin23

#!/usr/bin/env node
if (!process.argv[2] || !process.argv[3]) {
    console.log('usage node time_diff hh:mm:ss hh:mm:ss');
    process.exit(1);
}
const timeToSec     = (time) => time.split(':').reduce((acc, v) => acc * 60 + parseInt(v), 0);
const diffInSeconds = (time1, time2) => timeToSec(time2) - timeToSec(time1); 
const hhmmss = (secs) => {
    var minutes = Math.floor(secs / 60);
    secs = secs % 60;