Function _toBlob

packages/common/http/testing/src/request.ts:163–176

* Helper function to convert a response body to a Blob.

(
  body: ArrayBuffer | Blob | string | number | Object | (string | number | Object | null)[],
)

 * Helper function to convert a response body to a Blob.
 */
function _toBlob(
  body: ArrayBuffer | Blob | string | number | Object | (string | number | Object | null)[],
): Blob {
  if (typeof Blob === 'undefined') {
    throw new Error('Blob responses are not supported on this platform.');
  }
  if (body instanceof Blob) {
    return body;
  }
  if (ArrayBuffer && body instanceof ArrayBuffer) {
    return new Blob([body]);
  }
  throw new Error('Automatic conversion to Blob is not supported for response type.');
}

/**
 * Helper function to convert a response body to JSON data.