I like that in React you can quickly create small components within the main component file. Is something like that possible with Vue 3 composition API?
Something like this:
Component.vue
<script setup>
const SmallComponent = <div>Test</div>
</script>
<template>
<SmallComponent/>
</template>
The problem here is that SmallComponent is not a component but vnode object. Vnodes can be directly rendered in render functions but not templates.
Instead, it should be functional component:
const SmallComponent = props => <div>Test</div>
In script setup, it's the only available option, because the syntax provides a subset of functionality and doesn't support render functions.