Subchapter 76.19

Nuxt 3 6

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Nuxt Error Tracking installation (v3.6 and below)

Nuxt 3 6 · Instrument Error Tracking · PostHog/skills · Skills Docs

1

Install the package

Required

Install the PostHog JavaScript library using your package manager:

npm
```
npm install posthog-js
```
yarn
```
yarn add posthog-js
```
pnpm
```
pnpm add posthog-js
```
bun
```
bun add posthog-js
```
Nuxt version

This guide is for Nuxt v3.0 and above. For Nuxt v2.16 and below, see our Nuxt docs (opens in a new tab).

Add environment variables

Required

Add your PostHog project token and host to your nuxt.config.js file:

nuxt.config.js

export default defineNuxtConfig({
  runtimeConfig: {
    public: {
      posthogPublicKey: '<ph_project_token>',
      posthogHost: 'https://us.i.posthog.com',
      posthogDefaults: '2026-05-30'
    }
  }
})

Create a plugin

Required

Create a new plugin by creating a new file posthog.client.js in your plugins directory:

plugins/posthog.client.js

import { defineNuxtPlugin } from '#app'
import posthog from 'posthog-js'

export default defineNuxtPlugin(nuxtApp => {
  const

4

Server-side setup

Optional

To capture events from server routes, install posthog-node and instantiate it directly. You can also use it to evaluate feature flags on the server:

npm
```
npm install posthog-node
```
yarn
5

Send events

Click around and view a couple pages to generate some events. PostHog automatically captures pageviews, clicks, and other interactions for you.

If you’d like, you can also manually capture custom events:

JavaScript
```
posthog.capture('my_custom_event', { property: 'value' })
```
6

Manually capturing exceptions

Optional

To send errors directly using the PostHog client, import it and use the captureException method like this:

Vue
```
<script>
  const { $posthog } = useNuxtApp()
  if ($posthog) {
    const posthog = $posthog()
    posthog.captureException(
```

Configuring exception autocapture

Recommended

Update your posthog.client.js to add an error hook.

JavaScript

export default defineNuxtPlugin((nuxtApp) => {
    ...
    nuxtApp.hook('vue:error', (error) => {
        posthogClient.captureException(error)
    })

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.

Check for exceptions in PostHog (opens in a new tab)
8

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 (opens in a new tab)

import { PostHog } from 'posthog-node'

export default defineEventHandler(async (event) => {
    const runtimeConfig = useRuntimeConfig()

    const posthog = new PostHog(
        runtimeConfig.public.posthogPublicKey,
        { host: runtimeConfig.public.posthogHost }
    )

    posthog.capture({
        distinctId: 'distinct_id_of_the_user',
        event: 'event_name'
    })

    await posthog.shutdown()
})

const runtimeConfig = useRuntimeConfig()
const posthog = new PostHog(
  runtimeConfig.public.posthogPublicKey,
  {
    host: runtimeConfig.public.posthogHost,
  }
);
try {
  const results = await DB.query.users.findMany()
  return results
} catch (error) {
  posthog.captureException(error)
}

Nuxt 3 6

Nuxt Error Tracking installation (v3.6 and below)

Nuxt 3 6

Nuxt Error Tracking installation (v3.6 and below)

Install the package

npm

yarn

pnpm

bun

Add environment variables

Create a plugin

Server-side setup

npm

yarn

Send events

Manually capturing exceptions

Configuring exception autocapture

Verify error tracking

Upload source maps

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