A functional implementation of the PCG family random number generators, written in JavaScript.
To achieve frictionless reproducibility of random output results, immutable objects are used throughout the project.
Firstly, create a random number engine:
import { createPcg32 } from 'pcg';
const advancedOptions = {};
const initState = 42;
const initStreamId = 54;
const pcg = createPcg32(advancedOptions, initState, initStreamId);After that, random outputs can be generated by calling appropriate functions as shown below:
import { nextState, prevState, randomInt, randomList } from 'pcg';
const randomUint32 = randomInt(0, (2 ** 32) - 1);
let [value, nextPcg] = randomUint32(pcg);
const listLength = 6;
const listItemRng = randomUint32;
[value, nextPcg] = randomList(listLength, listItemRng, pcg);