Function _toJsonBody

packages/common/http/testing/src/request.ts:181–208

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

(
  body:
    | ArrayBuffer
    | Blob
    | boolean
    | string
    | number
    | Object
    | (boolean | string | number | Object | null)[],
  format: string = 'JSON',
)

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

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