Function createProblemDetailsResponse

http/unstable_problem_details.ts:202–247

(
  problemDetails: ProblemDetails<T>,
  options?: ProblemDetailsResponseOptions,
)

 * ```
 */
export function createProblemDetailsResponse<
  T extends ProblemDetailsExtensions,
>(
  problemDetails: ProblemDetails<T>,
  options?: ProblemDetailsResponseOptions,
): Response {
  const pd: Record<string, unknown> = { ...problemDetails };

  if (pd.type === undefined) pd.type = "about:blank";

  if (pd.status === undefined) pd.status = 500;

  if (!Number.isInteger(pd.status)) {
    throw new RangeError(
      `Cannot create Problem Details response: status must be a finite integer, received ${
        typeof pd.status === "string" ? `"${pd.status}"` : String(pd.status)
      }`,
    );
  }

  if (pd.type === "about:blank" && pd.title === undefined) {
    const statusText = STATUS_TEXT[pd.status as keyof typeof STATUS_TEXT];
    if (statusText !== undefined) {
      pd.title = statusText;
    }
  }

  const body = JSON.stringify(pd);
  const status = pd.status as number;
  const statusText = options?.statusText;

  if (options?.headers === undefined) {
    return new Response(body, {
      status,
      ...(statusText !== undefined ? { statusText } : {}),
      headers: { "Content-Type": PROBLEM_JSON_MEDIA_TYPE },
    });
  }
  const headers = new Headers(options.headers);
  headers.set("Content-Type", PROBLEM_JSON_MEDIA_TYPE);
  return new Response(body, {
    status,
    ...(statusText !== undefined ? { statusText } : {}),
    headers,
  });
}

function normalizeParsedProblemDetails(
  raw: unknown,