secure random in nodejs

random.js

'use strict';

const crypto = require('crypto');

class RNG {
  // Define a static method for generating a random float value in the range of 0 to 1
  static random() {
    try {
      // Use the crypto module's randomBytes method to generate 4 random bytes
      const randomBytes = crypto.randomBytes(4);

      // Interpret the random bytes as a 32-bit unsigned integer using readUInt32LE
      const int = randomBytes.readUInt32LE(0);

      // Divide the integer by 0xffffffff to get a float value in the range of 0 to 1
      const float = int / 0xffffffff;

      // Return the generated float value
      return float;
    } catch (err) {
      // Re-throw the error if it occurs
      throw err;
    }
  }
}