Cryptographically strong Math.random(). Generate cryptographically strong random float between 0-1. Uses 52 bits instead of 32.

crypto-random.ts

function random(): number {
	const buffer = new ArrayBuffer(8);
	const bytes = crypto.getRandomValues(new Uint8Array(buffer));
  
	// sets the exponent value (11 bits) to 01111111111 (1023)
	// since the bias is 1023 (2 * (11 - 1) - 1), 1023 - 1023 = 0
	// 2^0 * (1 + [52 bit number between 0-1]) = number between 1-2
	bytes[0] = 63;
	bytes[1] = bytes[1] | 240;
  
	return new DataView(buffer).getFloat64(0) - 1;
}