RunKit + npm: fatina

var fatina = require("fatina").default; // init fatina (api: https://kefniark.github.io/Fatina/api/basic/) fatina.init(false); // create a dummy object var obj = { a: 0, b: 0, position: {x:0, y:0}}; // create a tween (api: https://kefniark.github.io/Fatina/api/tween/) fatina.tween(obj.position) .to({x: 10, y: 10}, 4) .onStart(() => console.log("My tween is starting !")) .onUpdate((dt, progress) => console.log(`My tween is updating (+${dt}ms, ${progress*100}%)`)) .onComplete(() => console.log("My tween is finished !")) .start(); // simulate frame update for (var i = 0; i < 5; i++) { fatina.update(1); }