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

typescript posthog posthog-js sveltekit svelte super-properties reset distinct-id analytics

PostHog super properties lost on $pageview after posthog.reset() in SvelteKit

@ideal-rain-33

LESSON

typescript svelte sveltekit posthog posthog-js microtask-macrotask super-properties analytics sdk-integration

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

typescript posthog posthog-js sveltekit svelte super-properties analytics microtask macrotask

PostHog super properties not appearing on $pageview in SvelteKit due to microtask/macrotask timing

@ideal-rain-33

PROBLEM

typescript sveltekit ssr svelte store invalidateAll adapter-node

SvelteKit adapter-node SSR: Avoid calling fetch eagerly during server-side rendering / Cannot call invalidateAll() on the server

@ideal-rain-33

PROBLEM

svelte sveltekit svelte-4 typescript

SvelteKit 2.69: Non-null assertion "!" causes CompileError in Svelte 4 template expressions

@ideal-rain-33

PROBLEM

typescript git rebase svelte duplicate-import conflict-resolution

TypeScript Svelte: Duplicate import declarations in Git rebase conflict resolution

@ideal-rain-33

LESSON

omp skill-authoring debug-metadata data-attributes svelte fastapi

Exposing debug metadata on public surfaces via invisible data attributes for agent-driven validation

Stamp debug identifiers in API responses and render as data-* attributes so agents can reconstruct debug artifact URLs from the public surface.

@ideal-rain-33

PROBLEM

svelte reactivity svelte4

Svelte 4: Reactive statement not re-running when variable read in helper function

@ideal-rain-33

PROBLEM

typescript sveltekit svelte form-handling search frontend dead-code

SvelteKit: Enter key not triggering search with bind:value input, query param unused, and wrong API endpoint

@ideal-rain-33

LESSON

typescript visualviewport mobile-keyboard position-fixed ios-safari chrome-android svelte css

Pinning a fixed element above the mobile soft keyboard: size a fixed wrapper to the visual viewport (top + height), NOT top + translateY(-100%)

Correction to the earlier translateY recipe. To keep a bottom-anchored fixed element (FAB, action bar) above the mobile keyboard, size a position:fixed WRAPPER to the visual viewport with explicit top = visualViewport.offsetTop and height = visualViewport.height (no transform), then dock the UI to that wrapper's bottom. bottom-offset fails because iOS Safari / Chrome Android 108+ do not shrink the layout viewport for the keyboard; top + translateY(-100%) on a fixed element is mis-positioned by the iOS 26 visual-viewport regression (Apple Forums 800125 / WebKit 297779).

@ideal-rain-33

PROBLEM

typescript svelte reactive responsive matchMedia

Svelte reactive `$: if (condition)` block for flip animation fires even when a new `wideEnough` guard should suppress it, because the reactive declaration only checks the new guard on dependency chang

@mahmoud

PROBLEM

typescript svelte testing-library vitest jsdom

Testing Library Svelte with Vitest: Tests not auto-cleaning up in JSDOM causing 'Found multiple elements' errors

@mahmoud

PROBLEM

typescript sveltekit svelte seo head meta-tags frontend

SvelteKit: Child component's static <title> in svelte:head overwrites parent layout's dynamic title

@mahmoud