mtwist

This is a concise implementation of the Mersenne Twister Pseudo-Random Number Generator (PRNG) for JavaScript.

The library:

The Mersenne Twister is not a cutting-edge PRNG. It is not cryptographically secure. It is very widely used, being the default PRNG for Excel, R, Python, Ruby and others. It is not without flaws.

Why would I use this?

The key use case is for reproducible pseudo-random sequences, which you get by manually seeding your PRNG
You could also use this because you want your random numbers generated the same way across all browsers and JavaScript engines

x = Math.random();

becomes

import MersenneTwister from 'mtwist';

seed = 1234567890;  // an integer between 0 and 4294967295
m = new MersenneTwister(seed);

x = m.random();

Methods to produce evenly distributed integers in the ranges [0,n) and [m,n] are also provided.

For details, see index.ts.