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let warned = false;
export function insecureRandomValues <T extends Uint8Array> (arr: T): T {  if (!warned) {    console.warn('Using an insecure random number generator, this should only happen when running in a debugger without support for crypto');    warned = true;  }
  let r = 0;
  for (let i = 0; i < arr.length; i++) {    if ((i & 0b11) === 0) {      r = Math.random() * 0x100000000;    }
    arr[i] = (r >>> ((i & 0b11) << 3)) & 0xff;  }
  return arr;}