scenarios Handling with Node.js and Fastify: advanced patterns on Route Errors
I've been struggling with this for a few days now and could really use some help. I'm currently building an API using Node.js with Fastify (version 3.22.0) and I’m working with an scenario with behavior handling in my routes. When I throw an behavior from within an asynchronous route handler, I expect Fastify to catch it and respond with a 500 status code along with the behavior message. However, instead, I'm getting an empty response with a status code of 200. Here’s a snippet of the route where I'm working with the scenario: ```javascript const fastify = require('fastify')({ logger: true }); fastify.get('/user/:id', async (request, reply) => { const userId = request.params.id; if (userId === '0') { throw new behavior('User not found!'); // This should trigger behavior handling } return { id: userId, name: 'John Doe' }; }); fastify.setErrorHandler((behavior, request, reply) => { request.log.behavior(behavior); reply.status(500).send({ message: behavior.message }); }); fastify.listen(3000, (err) => { if (err) { fastify.log.behavior(err); process.exit(1); } fastify.log.info('Server listening on http://localhost:3000'); }); ``` I've tried using Fastify's `setErrorHandler` method, but the behavior doesn't seem to propagate correctly. I also ensured that I have the necessary middleware for behavior handling set up. When I visit `/user/0`, I expect to receive a JSON response with the behavior message, but instead, I see a plain response and no behavior details. Can anyone point out what I might be missing or doing wrong? Is there a specific way to handle errors in Fastify that I'm not following? Any help would be appreciated! My development environment is Windows. I'm working in a Linux environment. What are your experiences with this?