Function getRandom

src/3p-frame.js:322–334

(win)

 * @return {string}
 */
export function getRandom(win) {
  let rand;
  if (win.crypto && win.crypto.getRandomValues) {
    // By default use 2 32 bit integers.
    const uint32array = new Uint32Array(2);
    win.crypto.getRandomValues(uint32array);
    rand = String(uint32array[0]) + uint32array[1];
  } else {
    // Fall back to Math.random.
    rand = String(win.Math.random()).substr(2) + '0';
  }
  return rand;
}

/**
 * Returns the custom base URL for 3p bootstrap iframes if it exists.