[Typescript] Typescript 用 InjectionKey 達成強型別 provide

<script lang="ts">
import { InjectionKey, provide, Ref, reactive } from 'vue';
// State
export interface IState {
  drawer: boolean;
}
export const stateKey: InjectionKey<Ref<IState>> = Symbol();
const state = reactive<IState>({
  drawer: false,
});
provide<IState>(stateKey, computed(()=>state));
</script>

<script setup lang="ts">
import { inject, ref } from 'vue';
import { stateKey } from './Parent.vue';

const state = inject(stateKey, ref({ drawer: false }));
</script>