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Advanced Svelte Reusing content Implicit snippet props

As an authoring convenience, snippets declared directly inside components become props on those components. Take the header and row snippets and move them inside <FilteredList>:

App
<FilteredList
	data={colors}
	field="name"
	{header}
	{row}
>
	{#snippet header()}...{/snippet}

	{#snippet row(d)}...{/snippet}
</FilteredList>

{#snippet header()}...{/snippet}

{#snippet row(d)}...{/snippet}

We can now remove them from the explicit props:

App
<FilteredList data={colors} field="name" {header} {row}>
	{#snippet header()}...{/snippet}

	{#snippet row(d)}...{/snippet}
</FilteredList>

Any content inside a component that is not part of a declared snippet becomes a special children snippet. Since header has no parameters, we can turn it into children by removing the block tags...

App
{#snippet header()}
<header>
	<span class="color"></span>
	<span class="name">name</span>
	<span class="hex">hex</span>
	<span class="rgb">rgb</span>
	<span class="hsl">hsl</span>
</header>
{/snippet}

...and renaming the header prop to children on the other side:

FilteredList
<script>
	let { data, field, children, row } = $props();

	// ...
</script>
<script lang="ts">
	let { data, field, children, row } = $props();

	// ...
</script>
FilteredList
<div class="header">
	{@render children()}
</div>

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Passing snippets to components
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<script>
	import FilteredList from './FilteredList.svelte';
	import { colors } from './data.js';
</script>
 
<FilteredList
	data={colors}
	field="name"
	{header}
	{row}
></FilteredList>
 
{#snippet header()}
	<header>
		<span class="color"></span>
		<span class="name">name</span>
		<span class="hex">hex</span>
		<span class="rgb">rgb</span>
		<span class="hsl">hsl</span>
	</header>
{/snippet}
 
{#snippet row(d)}
	<div class="row">
		<span class="color" style="background-color: {d.hex}"></span>
		<span class="name">{d.name}</span>
		<span class="hex">{d.hex}</span>
		<span class="rgb">{d.rgb}</span>
		<span class="hsl">{d.hsl}</span>
	</div>
{/snippet}
 
<style>
	header, .row {
		display: grid;
		align-items: center;
		grid-template-columns: 2em 4fr 3fr;
		gap: 1em;
		padding: 0.1em;
		background: var(--bg-1);
		border-radius: 0.2em;
	}
 
	header {
		font-weight: bold;
	}
 
	.row:hover {
		background: var(--bg-2);
	}
 
	.color {
		aspect-ratio: 1;
		height: 100%;
		border-radius: 0.1em;
	}
 
	.rgb, .hsl {
		display: none;
	}
 
	@media (min-width: 40rem) {
		header, .row {
			grid-template-columns: 2em 4fr 3fr 3fr;
		}
 
		.rgb {
			display: block;
		}
	}
 
	@media (min-width: 60rem) {
		header, .row {
			grid-template-columns: 2em 4fr 3fr 3fr 3fr;
		}
 
		.hsl {
			display: block;
		}
	}
</style>