Error Tracking Hono

Hono error tracking installation - Docs

1. 1

   Install the package

   Required

   Install the PostHog Node.js library using your package manager:

   PostHog AI

   npm

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   npm install posthog-node

   yarn

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   yarn add posthog-node

   pnpm

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   pnpm add posthog-node

2. 2

   Initialize PostHog

   Required

   Initialize the PostHog client with your project token:

   Node.js

   PostHog AI

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   import { PostHog } from 'posthog-node'
   const client = new PostHog(
       '<ph_project_token>',
       {
           host: 'https://us.i.posthog.com'
       }
   )

3. 3

   Send an event

   Recommended

   Once installed, you can manually send events to test your integration:

   Node.js

   PostHog AI

   Copy

   client.capture({
       distinctId: 'distinct_id_of_the_user',
       event: 'event_name',
       properties: {
           property1: 'value',
           property2: 'value',
       },
   })

4. 4

   Exception handling example

   Required

   Hono uses app.onError to handle uncaught exceptions. You can take advantage of this for error tracking.

   Remember to export your project token as an environment variable.

   index.ts

   PostHog AI

   Copy

   import { PostHog } from 'posthog-node'
   const posthog = new PostHog(process.env.POSTHOG_TOKEN, { host: 'https://us.i.posthog.com' })
   app.onError(async (err, c) => {
     posthog.captureException(err, 'user_distinct_id_with_err_rethrow', {
       path: c.req.path,
       method: c.req.method,
       url: c.req.url,
       headers: c.req.header(),
       // ... other properties
     })
     await posthog.flush()
     // other error handling logic
     return c.text('Internal Server Error', 500)
   })

5. Verify error tracking

   Recommended

   Confirm events are being sent to PostHog

   Before proceeding, let's make sure exception events are being captured and sent to PostHog. You should see events appear in the activity feed.

   Image: Activity feed with eventsImage: Activity feed with events

   Check for exceptions in PostHog

6. 5

   Upload source maps

   Required

   Great, you're capturing exceptions! If you serve minified bundles, the next step is to upload source maps to generate accurate stack traces.

   Let's continue to the next section.

   Upload source maps

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