Cntdwn is a library that calculates the difference of time between an arbitrary date and the current date and executes a callback function each second passing the new difference of time.
Just run npm install cntdwn or yarn add cntdwn
const Cntdwn = require("cntdwn");
const countdown = new Cntdwn(
new Date(2019, 1, 1),
(days, hours, minutes, seconds) => {
console.log(days, hours, minutes, seconds);
if(days < 10) {
countdown.stop();
}
});
countdown.start();