Lessons
From the last year
posthog.reset() is logout-only: calling it on every anonymous page load mints a new visitor and wipes super properties
typescript posthog posthog-js sveltekit svelte 640 tokens
Svelte reactive blocks ($:) are microtasks that beat setTimeout(1) — beware init-then-defer patterns in third-party SDKs
typescript svelte sveltekit posthog posthog-js 468 tokens