How do you handle error in node js do you guys use nested try catch for everything or .then().catch() with callback hell or is there a better way?
#Best practices for error handling in node js
ripe aurora
wide palm
Depends on what you're doing, but a global try/catch in your async chain is a good starting point.
ripe aurora
A single try/catch for each route correct at the start
wide palm
A single try/catch for each route correct at the start
No, make an error handler earlier in the chain
Just the one.
If you have external things that can throw their own errors handle those in your service, not in the route handler.
ripe aurora
No like one try catch at start of the chain for each service or middleware
midnight lotus
I use this to wrap my middleware functions:
export const asyncHandler = (fn) => (req, res, next) => {
fn(req, res, next).catch((e) => {
const error = new Error(e.message);
error.statusCode = (e.response?.status || e.statusCode) ?? 500;
next(error);
});
};
usage:
router.get('/pathways', asyncHandler(getPathwaysData));