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/** * Run this example using: * *    deno run --allow-net --allow-read ./examples/error/index.ts * *    if have the repo cloned locally _OR_ * *    deno run --allow-net --allow-read https://raw.githubusercontent.com/cmorten/opine/main/examples/error/index.ts * *    if you don't! */
import opine from "../../mod.ts";import type {  NextFunction,  OpineRequest,  OpineResponse,} from "../../src/types.ts";
const app = opine();
// error handling middleware have an arity of 4// instead of the typical (req, res, next),// otherwise they behave exactly like regular// middleware, you may have several of them,// in different orders etc.
function error(  err: any,  _req: OpineRequest,  res: OpineResponse,  _next: NextFunction,) {  // respond with custom 500 "Internal Server Error".  res.setStatus(500);  res.json({ message: "Internal Server Error", error: err.message });}
app.get("/", function () {  // Caught and passed down to the errorHandler middleware  throw new Error("sync error");});
app.get("/next", function (_req, _res, next) {  // We can also pass exceptions to next()  // The reason for setTimeout() is to show that  // next() can be called inside an async operation,  // in real life it can be a DB read or HTTP request.  setTimeout(function () {    next(new Error("async error"));  });});
// the error handler is placed after routes// if it were above it would not receive errors// from app.get() etcapp.use(error);
if (import.meta.main) {  // You can call listen the same as Express with just  // a port: `app.listen(3000)`, or with any arguments  // that the Deno `http.serve` methods accept. Namely  // an address string, HttpOptions or HttpsOptions  // objects.  app.listen({ port: 3000 });  console.log("Opine started on port 3000");}
export { app };