Hono error tracking installation

  1. Install the package

    Required

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

    npm install posthog-node
  2. Initialize PostHog

    Required

    Initialize the PostHog client with your project API key:

    Node.js
    import { PostHog } from 'posthog-node'
    const client = new PostHog(
    '<ph_project_api_key>',
    {
    host: 'https://us.i.posthog.com'
    }
    )
  3. Send an event

    Recommended

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

    Node.js
    client.capture({
    distinctId: 'distinct_id_of_the_user',
    event: 'event_name',
    properties: {
    property1: 'value',
    property2: 'value',
    },
    })
  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 API key as an environment variable.

    index.ts
    import { PostHog } from 'posthog-node'
    const posthog = new PostHog(process.env.POSTHOG_PUBLIC_KEY, { 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.
    Activity feed with events
    Check for exceptions in PostHog
  6. 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

Community questions

Was this page useful?

Questions about this page? or post a community question.