Function _toTextBody

packages/common/http/testing/src/request.ts:213–226

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

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

 * Helper function to convert a response body to a string.
 */
function _toTextBody(
  body: ArrayBuffer | Blob | string | number | Object | (string | number | Object | null)[],
): string {
  if (typeof body === 'string') {
    return body;
  }
  if (typeof ArrayBuffer !== 'undefined' && body instanceof ArrayBuffer) {
    throw new Error('Automatic conversion to text is not supported for ArrayBuffers.');
  }
  if (typeof Blob !== 'undefined' && body instanceof Blob) {
    throw new Error('Automatic conversion to text is not supported for Blobs.');
  }
  return JSON.stringify(_toJsonBody(body, 'text'));
}

/**
 * Convert a response body to the requested type.