Function randomString

src/cryptoUtils.js:22–33

(size: number)

// (256) evenly. Such bias is acceptable for most cases when the output
// length is long enough and doesn't need to be uniform.
export function randomString(size: number): string {
  if (size === 0) {
    throw new Error('Zero-length randomString is useless.');
  }
  const chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' + 'abcdefghijklmnopqrstuvwxyz' + '0123456789';
  let objectId = '';
  const bytes = randomBytes(size);
  for (let i = 0; i < bytes.length; ++i) {
    objectId += chars[bytes.readUInt8(i) % chars.length];
  }
  return objectId;
}

// Returns a new random alphanumeric string suitable for object ID.
export function newObjectId(size: number = 10): string {