Accurate Javascript setInterval replacement

EXAMPLE.md

let int = createInterval(() => console.log("Hello!"), 1000);
int.run();

setTimeout(() => int.stop(), 5000);

interval.js

createInterval = function(fn, interval){
    return new (function(){
        this.baseline = undefined;
        this.run = function(){
            if(this.baseline === undefined){
                this.baseline = Date.now();
            }

            fn();

            let end = Date.now();
            this.baseline += interval;

            let nextTick = interval - (end - this.baseline);
            if (nextTick < 0) nextTick = 0;
            this.timer = setTimeout(() => this.run(end), nextTick);
        };

        this.stop = () => clearTimeout(this.timer);
    });
};