posthog-hello-world

# PostHog Hello World ## Overview Minimal working examples demonstrating the three core PostHog operations: capturing events, identifying users, and evaluating feature flags. Covers both browser (`posthog-js`) and server (`posthog-node`) SDKs. ## Prerequisites - Completed `posthog-install-auth` setup - Project API key (`phc_...`) configured - `posthog-js` and/or `posthog-node` installed ## Instructions ### Step 1: Capture Your First Event (Node.js) ```typescript // hello-posthog.ts import { PostHog } from 'posthog-node'; const posthog = new PostHog(process.env.NEXT_PUBLIC_POSTHOG_KEY!, { host: 'https://us.i.posthog.com', }); async function main() { // 1. Capture a custom event posthog.capture({ distinctId: 'user-123', event: 'hello_posthog', properties: { greeting: 'Hello from posthog-node!', source: 'hello-world-skill', timestamp: new Date().toISOString(), }, }); console.log('Event captured: hello_posthog'); // 2. Identify a user with properties posthog.identify({ distinctId: 'user-123', properties: { email: 'dev@example.com', name: 'Dev User', plan: 'free', }, }); console.log('User identified: user-123'); // 3. Check a feature flag const flagValue = await posthog.getFeatureFlag('my-feature-flag', 'user-123'); console.log(`Feature flag "my-feature-flag": ${flagValue}`); // 4. Flush and shutdown (required in scripts/serverless) await posthog.shutdown(); console.log('Done ...