Alternative API

[mfbx9da4]

I think it would be nice to overload Math.random

function random(): number
function random(opts: EmptyObject): number
function random(opts: { seed: number }): RandomNumberGenerator

interface RandomNumberGenerator {
  next: () => number
  fork: () => RandomNumberGenerator 
}

type EmptyObject = Record<string, never>

[mfbx9da4]

Also note fork here will create a new RNG which is predictably forked from the current one. ie does something like

…
fork = () => random({ seed: this.next() })
…