Vue.js: How to type props in Vue 3 with TypeScript?

1<script setup lang="ts">
2const props = defineProps<{
3    title: string
4    count: number
5    items?: string[]
6    user: {
7        id: number
8        name: string
9    }
10}>()
11</script>

1<script setup lang="ts">
2const props = withDefaults(
3    defineProps<{
4        title: string
5        count?: number
6    }>(),
7    {
8        count: 0
9    }
10)
11</script>