I’ve tried all the ways to handle my errors but error handling middleware is never been called.
I tried many ways to handle the error but it seems that code instantly breaks when I throw an error.
-- App.js --
const app = express();
app.set('trust proxy', true);
app.use(json());
app.use(
cookieSession({
signed: false,
secure: process.env.NODE_ENV !== 'test',
})
);
// routes
app.use(CurrentUserRoute);
app.use(SignInRoute);
app.use(SignUpRoute);
app.use(SignOutRoute);
app.all('*', async (req, res) => {
console.log('This is a global error handler at route level....');
throw new Error('Error');
});
app.use(errorHandler); // this is the error middleware
Error handling middleware:
import { Request, Response, NextFunction } from 'express';
export const errorHandler = (
err: Error,
req: Request,
res: Response,
next: NextFunction
) => {
console.log('Something went wrong!!!!!!!!!!!!!!!!!!!!!!!!!!!!: ', err);
res.status(400).send({
message: 'Something Went Wrong',
});
};
In my routes, whenever I throw an error, the middleware is never called and it instantly shows its own error like
[auth] Error: "email" length must be at least 5 characters long
[auth] at /app/src/routes/signUp.ts:17:11
[auth] at step (/app/src/routes/signUp.ts:33:23)
[auth] at Object.next (/app/src/routes/signUp.ts:14:53)
[auth] at /app/src/routes/signUp.ts:8:71
[auth] at new Promise ()
[auth] at __awaiter (/app/src/routes/signUp.ts:4:12)
[auth] at /app/src/routes/signUp.ts:11:68
[auth] at Layer.handle [as handle_request] (/app/node_modules/express/lib/router/layer.js:95:5)
[auth] at next (/app/node_modules/express/lib/router/route.js:137:13)
[auth] at Route.dispatch (/app/node_modules/express/lib/router/route.js:112:3)
[auth] at Layer.handle [as handle_request] (/app/node_modules/express/lib/router/layer.js:95:5)
[auth] at /app/node_modules/express/lib/router/index.js:281:22
[auth] at Function.process_params (/app/node_modules/express/lib/router/index.js:335:12)
[auth] at next (/app/node_modules/express/lib/router/index.js:275:10)
[auth] at Function.handle (/app/node_modules/express/lib/router/index.js:174:3)
[auth] at router (/app/node_modules/express/lib/router/index.js:47:12)
[auth] [ERROR] 12:13:25 Error: "email" length must be at least 5 characters long
P.S I’m using Docker and Kubernetes Environment with ingress-nginx service but I don’t think it could have any problem with error handling.
2
Answers
One of the ways to fix this problem is to make middleware directly in your app.js file.
so instead of this :
use this :
if Error handling middleware don’t have any error you can use like this in controller
use
return next()
after that error middleware should runmy error middleware handling (errorMiddleware.js)
in app.js