N
Nuxt•5w ago
ok3n

Logging server-side errors

Using Nuxt3/latest, I'm trying to understand how to forward server-side error logs to a third party (newrelic or rollbar, doesn't matter). Where is the best place to put this, is it a server middleware, a plugin with .server at the end, what should it be listening to? Thanks a lot!
2 Replies
kapa.ai
kapa.ai•5w ago
Hi @ok3n. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- To handle server-side error logging in Nuxt 3 and forward these errors to a third-party service like New Relic or Rollbar, you have several options. Let me explain the best approaches: Using Nitro Hooks The most comprehensive way to capture server-side errors is by using Nitro hooks. You can create a server plugin that listens to the error hook: 
// server/plugins/error-logger.ts
export default defineNitroPlugin((nitroApp) => {
  nitroApp.hooks.hook('error', (error, { event }) => {
    // Send error to your third-party service
    console.log('Server error:', error)
    // yourThirdPartyService.captureException(error)
  })
})
// server/plugins/error-logger.ts
export default defineNitroPlugin((nitroApp) => {
  nitroApp.hooks.hook('error', (error, { event }) => {
    // Send error to your third-party service
    console.log('Server error:', error)
    // yourThirdPartyService.captureException(error)
  })
})
This approach will capture all errors that occur in the Nitro server, including API routes and server middleware errors. Nitro plugins are executed once when the server starts and can register hooks for various events, including errors. Nitro App Hooks documentation shows that the error hook receives the error object and optionally the event context. Using a Server Plugin Another option is to create a Nuxt server plugin: 
// plugins/error-handler.server.ts
export default defineNuxtPlugin((nuxtApp) => {
  nuxtApp.hook('app:error', (error) => {
    // Send error to your third-party service
    console.log('Nuxt app error on server:', error)
    // yourThirdPartyService.captureException(error)
  })
})
// plugins/error-handler.server.ts
export default defineNuxtPlugin((nuxtApp) => {
  nuxtApp.hook('app:error', (error) => {
    // Send error to your third-party service
    console.log('Nuxt app error on server:', error)
    // yourThirdPartyService.captureException(error)
  })
})
This will capture errors that occur during the Nuxt application lifecycle on the server, such as errors in plugins, hooks, or during SSR rendering. Using Server Middleware You can also use server middleware to catch and log errors, though this is generally less recommended for global error handling: 
// server/middleware/error-logger.ts
export default defineEventHandler((event) => {
  // This middleware will run on every request
  // but won't catch errors unless you specifically handle them
  // It's better to use the Nitro hooks approach for error handling
})
// server/middleware/error-logger.ts
export default defineEventHandler((event) => {
  // This middleware will run on every request
  // but won't catch errors unless you specifically handle them
  // It's better to use the Nitro hooks approach for error handling
})
As noted in the server middleware documentation, middleware should generally not return anything or directly respond to requests, making it less ideal for error handling. Best Practice Recommendation The most comprehensive approach is to combine both Nitro and Nuxt hooks: 1. Use a Nitro server plugin with the error hook to catch all server-related errors 2. Use a Nuxt server plugin with the app:error hook to catch application-specific errors This combination will give you the most complete coverage of potential error sources in your Nuxt 3 application. Remember that server plugins are automatically registered from the ~/server/plugins directory, and you don't need to list them in your configuration. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------
kapa.ai
kapa.ai•5w ago
<@407208375349280778> Kapa.ai is still learning and improving, please let me know how I did by reacting below.

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