How many times do you need to call `Math.random()` to get a collision? (Firefox will tell you, Chrome may not!)

math_random_collision.js

// This is a simple experiment to see how likely it is to get a collision when using Math.random()
(() => {
  const numbersSet = new Set();
  while (true) {
    const random = Math.random();
    // const random = crypto.randomUUID();
    if (numbersSet.has(random)) {
      console.log(`Set size: ${numbersSet.size.toLocaleString()}, collision: ${random}`);
      break;
    }
    else numbersSet.add(random);
  }
})();

// Conclusions:
// - Chrome "Set" can handle only a few millions of items :(
// - Set will consume gigabytes of RAM in short time!
// - collision will appear after generating roughly between 10 - 200 millions of random numbers
// - for more collision free random you can use "crypto.randomUUID"