Function processJsonResponse

app/static/js/controllers.js:31–60

* Processes response from the backend API. * @param {Object} response - An object as returned by `fetch` * @returns {Promise } * Success case: a JSON response with status 2xx. Promise resolves with data * from response body. * Error case: anything else, e.g. non-JSON or

(response)

 *
 */
async function processJsonResponse(response) {
  const contentType = response.headers.get("content-type") || "";
  if (!contentType.includes("application/json")) {
    const status = `${response.status} ${response.statusText}`;
    const bodyText = await response.text();
    throw new ControllerError(
      "Malformed API response, content type must be JSON.\n" +
        `Response status: ${status}\n\n${bodyText}`
    );
  }

  let jsonBody;
  try {
    jsonBody = await response.json();
  } catch (jsonParseError) {
    throw new ControllerError(
      "Malformed API response, JSON body cannot be parsed.\n" + jsonParseError
    );
  }

  // Resolve on 2xx response:
  if (response.status >= 200 && response.status < 300) {
    return jsonBody;
  }
  // Reject otherwise:
  throw new ControllerError(
    jsonBody.message || "Unknown error: " + JSON.stringify(jsonBody),
    jsonBody.code
  );
}

export async function getLatestRelease() {
  return fetch("/api/latestRelease", {