feat(compiler-sfc): defineDirective

[liuseen-l]

RFC: vuejs/rfcs#653

define custom directives will get friendly type hints

// before
<script setup>
      const vTest = defineDirective({ created(){} })
 </script>

// after 
export default {
      setup(__props, { expose: __expose }) {
        __expose();
       const vTest = { created(){} }
       return { vTest }
    }
}

When writing custom directives in a vue file, there is no type hint, so this new micro is added to solve this problem

[github-actions]

Size Report

Bundles

File	Size	Gzip	Brotli
runtime-dom.global.prod.js	90.5 kB	34.4 kB	31 kB
vue.global.prod.js	148 kB	53.7 kB	47.9 kB

Usages

Name	Size	Gzip	Brotli
createApp	50.8 kB	19.8 kB	18.1 kB
createSSRApp	54.1 kB	21.2 kB	19.3 kB
defineCustomElement	53 kB	20.6 kB	18.8 kB
overall	64.4 kB	24.9 kB	22.6 kB

[Shyam-Chen]

Why not just use import type { Directive } from 'vue';?

[liuseen-l]

Why not just use import type { Directive } from 'vue';?

This issue is mentioned in the rfc