Error parameter in express middleware

[brandonk3nt]

In express, you can define middleware to handle errors with a fourth parameter err:

app.use((err, req, res, next) => {
  // Handle err object here
})

You can also define this middleware after all the routes as the last item in your express stack. With EZ API you can define express-style middleware, but it does not allow for the fourth err parameter in the middleware function. Is this possible with EZ API? What is the best way to implement a "catch-all" error handler, and can I define the order of my middleware like express so that I can run my error middleware last after all my routes?

[RobinTail]

In express-zod-api that job is carried out by ResultHandler.
The errors happened in endpoint handlers, middlewares, IO validation — will be handled by the ResultHandler assigned to the EndpointsFactory those endpoints produced at.
Parsing errors and 404 errors are handled by the ResultHandler assigned to errorHandler in your config (by default it's defaultResultHandler), @brandonk3nt

[RobinTail]

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