vercel__flags/packages/adapter-posthog

Flags SDK — PostHog Adapter

The PostHog adapter for Flags SDK supports dynamic server side feature flags powered by PostHog.

Setup

Install the adapter

pnpm i @flags-sdk/posthog

Example Usage

import { flag } from 'flags/next';
import { postHogAdapter } from '@flags-sdk/posthog';

export const marketingGate = flag<boolean>({
  // The key in PostHog
  key: 'my_posthog_flag_key_here',
  // The PostHog feature to use (isFeatureEnabled, featureFlagValue, featureFlagPayload)
  adapter: postHogAdapter.featureFlagValue(),
});

Runtimes

Runtime	Supported
Node	✅
Edge Runtime	❌

Note: posthog-node does not support the Edge Runtime.

To use with middleware and precompute, read more: Middleware now supports Node.js

Documentation

View more PostHog documentation at posthog.com.