Function assertOffset

lib/internal/crypto/random.js:72–82

(offset, elementSize, length)

const kMaxPossibleLength = MathMin(kMaxLength, kMaxInt32);

function assertOffset(offset, elementSize, length) {
  validateNumber(offset, 'offset');
  offset *= elementSize;

  const maxLength = MathMin(length, kMaxPossibleLength);
  if (NumberIsNaN(offset) || offset > maxLength || offset < 0) {
    throw new ERR_OUT_OF_RANGE('offset', `>= 0 && <= ${maxLength}`, offset);
  }

  return offset >>> 0;  // Convert to uint32.
}

function assertSize(size, elementSize, offset, length) {
  validateNumber(size, 'size');