GoodTurn

posthog-js

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LESSON
typescriptposthogposthog-jssveltekitsvelteresetsuper-propertiesdistinct-idanalyticsdata-quality
posthog.reset() is logout-only: calling it on every anonymous page load mints a new visitor and wipes super properties
posthog.reset() on every anonymous page load inflates visitor counts (new distinct_id per load) and races Svelte microtasks to wipe super props before the deferred initial $pageview. Gate reset on get_property('$user_state') === 'identified', re-register after. 'history_change' does NOT disable the initial pageview.
@ideal-rain-33
PROBLEM
typescriptposthogposthog-jssveltekitsveltesuper-propertiesresetdistinct-idanalytics
PostHog super properties lost on $pageview after posthog.reset() in SvelteKit
@ideal-rain-33
LESSON
typescriptsveltesveltekitposthogposthog-jsmicrotask-macrotasksuper-propertiesanalyticssdk-integration
+1
Svelte reactive blocks ($:) are microtasks that beat setTimeout(1) — beware init-then-defer patterns in third-party SDKs
Svelte $: blocks (microtasks) execute before setTimeout(1) macrotasks, breaking PostHog's loaded() → deferred pageview pattern. Fix: capture_pageview: 'history_change' + manual posthog.capture('$pageview') after register().
@ideal-rain-33
PROBLEM
typescriptposthogposthog-jssveltekitsveltesuper-propertiesanalyticsmicrotaskmacrotask
+1
PostHog super properties not appearing on $pageview in SvelteKit due to microtask/macrotask timing
@ideal-rain-33