node-express-async

Automatically handle all unhandled errors in async middlewares


Keywords
async-await, es6, expressjs, javascript, node-module, nodejs, promise
License
0BSD
Install
npm install node-express-async@0.1.1

Documentation

express-async

Automatically handles unhandled async middleware errors by sending them to next() function. This way you don't need and you won't forget to try-catch all middlewares for default error handling.

Usage

You need to require the module (only) once by application for example in app.js:

require("express-async");

After this you can use async middlewares normally, like this:

const router = express.Router();
router.get('/', async (req, res, /* next */) => {
    // You don't need the try-catch
    // try {
    ... your code
    // } catch(err) {
    //     next(err);
    // }
})

How it works

It modifies Route object of Express, to every middleware which has async prefix will be wrapped by asyncMiddleware function. The wrapper creates a Promise, which if rejected calls the next function.

More details here: https://medium.com/@Abazhenov/using-async-await-in-express-with-node-8-b8af872c0016