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<script lang="ts">
import { defineComponent } from 'vue'
import { useQuery } from '@tanstack/vue-query'
import type { Post } from './types'
const fetcher = async (): Promise<Post[]> =>
await fetch('https://jsonplaceholder.typicode.com/posts').then((response) =>
response.json(),
)
export default defineComponent({
name: 'PostsList',
props: {
isVisited: {
type: Function,
required: true,
},
},
emits: ['setPostId'],
setup() {
const { isPending, isError, isFetching, data, error, refetch } = useQuery({
queryKey: ['posts'],
queryFn: fetcher,
})
return { isPending, isError, isFetching, data, error, refetch }
},
})
</script>
<template>
<div>
<h1>Posts</h1>
<div v-if="isPending">Loading...</div>
<div v-else-if="isError">An error has occurred: {{ error }}</div>
<div v-else-if="data">
<ul>
<li v-for="item in data" :key="item.id">
<a
@click="$emit('setPostId', item.id)"
href="#"
:class="{ visited: isVisited(item.id) }"
>{{ item.title }}</a
>
</li>
</ul>
</div>
</div>
</template>
<style scoped>
.visited {
font-weight: bold;
color: green;
}
</style>
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