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+---
+description: 
+globs: *.svelte
+alwaysApply: false
+---
+# Svelte Style
+
+Observe the the following style guidelines when programming Svelte components or SvelteKit pages:
+
+- Always use idiomatic Svelte 5 syntax and features. Svelte 5 idioms include:
+  - Runes, such as `$state`, `$derived`, `$effect`, and `$props`.
+  - Callback props.
+  - Snippets.
+- Avoid using deprecated Svelte 4 syntax and features. Depecrated features include:
+  - Props declared via `export let`.
+  - Event handlers attached via the `on:` directive.
+  - Event dispatchers.
+  - Component slots.
+- Remember that Svelte 5 state is deeply reactive.
+  - Mutating a state object automatically triggers reactivity in most cases.
+  - Avoid trying to trigger reactivity by reassigning state variables unless other options have failed.
+- Write components in TypeScript, and prefer strong typing for variables, props, and function signatures.
+- Limit component logic to rendering concerns. Extract business logic into separate TypeScript modules, and import functions and classes into Svelte components as needed.
+
+## Component Code Organization Example
+
+When writing or editing a Svelte component, organize the code according to the following template:
+
+```
+<script lang='ts'>
+  // Begin the script section with imports.
+  // Import only what is necessary.
+  import type { PublicationTree } from '$lib/data_structures/publication_tree';
+  import { getContext } from 'svelte';
+  import type { Asciidoctor } from 'asciidoctor';
+
+  // Define props immediately after imports.
+  // Strongly type the props object.
+  let {
+    address,
+    publicationType,
+    ref,
+  }: {
+    address: string,
+    publicationType: string,
+    ref: (ref: HTMLElement) => void,
+  } = $props();
+
+  // Import shared state via `getContext` next.
+  const publicationTree: PublicationTree = getContext('publicationTree');
+  const asciidoctor: Asciidoctor = getContext('asciidoctor');
+
+  // Then define component state.
+  // Put `$state` definitions first, followed by `$derived`.
+  // If derived values depend on others, declare them in the order of derivation.
+  let leafEvent: Promise<NDKEvent | null> = $derived.by(async () => 
+    await publicationTree.getEvent(address));
+
+  // Define any non-reactive variables after the reactive ones.
+  let sectionRef: HTMLElement;
+
+  // Define component logic below any state declarations.
+  // Component logic may include functions or `$effect` runes.
+  $effect(() => {
+    // Some reactive logic...
+  });
+
+  // Lastly, define any lifecycle hooks, such as `onMount`, at the end of the `<script>` block.
+  onMount(() => {
+    // Some mount logic...
+  });
+</script>
+
+<!-- Insert any snippets before the component's regular markup. -->
+{#snippet contentParagraph(content: string, publicationType: string, isSectionStart: boolean)}
+  <section class='whitespace-normal publication-leather'>
+    {@html content}
+  </section>
+{/snippet}
+
+<!-- The component's markup is typically the last code within the component. -->
+<section id={address} bind:this={sectionRef} class='publication-leather content-visibility-auto'>
+  {#await leafEvent}
+    {@render contentParagraph(leafEvent.content.toString(), publicationType ?? 'article', false)}
+  {/await}
+</section>
+
+<!-- Style blocks, if needed, may be placed at the end of a component. -->
+<!-- Since Tailwind is used, style blocks are usually avoided in favor of Tailwind utility classes. -->
+```
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