just-animate/lib.es2015/extras/random.js

_Making Animation Simple_

const rdm = Math.random;
const flr = Math.floor;
export function random(first, last, suffix, round) {
    let val = first + rdm() * (last - first);
    if (round === true) {
        val = flr(val);
    }
    return !suffix ? val : val + suffix;
}