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<script lang="ts">
import { useQueryClient, createQuery } from '@tanstack/svelte-query'
import { getPosts } from './data'
const client = useQueryClient()
let limit = 10
const posts = createQuery<
{ id: number; title: string; body: string }[],
Error
>({
queryKey: ['posts', limit],
queryFn: () => getPosts(limit),
})
</script>
<div>
<div>
{#if $posts.status === 'pending'}
<span>Loading...</span>
{:else if $posts.status === 'error'}
<span>Error: {$posts.error.message}</span>
{:else}
<ul>
{#each $posts.data as post}
<article>
<a
href={`/${post.id}`}
style={// We can use the queryCache here to show bold links for
// ones that are cached
client.getQueryData(['post', post.id])
? 'font-weight: bold; color: indianred'
: 'cursor: pointer'}
>
{post.title}
</a>
</article>
{/each}
</ul>
{#if $posts.isFetching}
<div style="color:darkgreen; font-weight:700">
Background Updating...
</div>
{/if}
{/if}
</div>
</div>
<style>
article {
text-align: left;
}
a {
display: block;
color: white;
font-size: 1.5rem;
margin-bottom: 1rem;
}
</style>
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