Function validateExchangeURL

js/bundle/src/encoder.ts:269–278

(urlString: string)

// Throws an error if `urlString` is not a valid exchange URL, i.e. it must not
// have credentials (user:password@) or hash (#fragment).
function validateExchangeURL(urlString: string): void {
  // `urlString` can be relative, so try parsing it with a dummy base URL.
  const url = new URL(urlString, 'https://webbundle.example/');
  if (url.username !== '' || url.password !== '') {
    throw new Error('Exchange URL must not have credentials: ' + urlString);
  }
  if (url.hash !== '') {
    throw new Error('Exchange URL must not have a hash: ' + urlString);
  }
}

function byteString(s: string): Uint8Array {
  return new TextEncoder().encode(s);