Function createMiddleware

packages/express/src/index.ts:54–92

(client: TriggerClient, path: string = "/api/trigger")

 * ```
 */
export function createMiddleware(client: TriggerClient, path: string = "/api/trigger") {
  return async (req: express.Request, res: express.Response, next: express.NextFunction) => {
    if (req.path !== path) {
      next();

      return;
    }

    if (req.method === "HEAD") {
      res.sendStatus(200);

      return;
    }

    try {
      const request = convertToStandardRequest(req);

      const response = await client.handleRequest(request);

      if (!response) {
        res.status(404).json({ error: "Not found" });

        return;
      }

      if (response.headers) {
        for (const [key, value] of Object.entries(response.headers)) {
          if (typeof value === "string") {
            res.setHeader(key, value);
          }
        }
      }

      res.status(response.status).json(response.body);
    } catch (error) {
      next(error);
    }
  };
}

function convertToStandardRequest(req: express.Request): Request {
  const { headers: nextHeaders, method } = req;