feat(runtime-vapor): add setup ctx type

Author: Doctor-wu

packages/runtime-vapor/src/apiSetup.ts

@@ -1,9 +1,17 @@
 import { proxyRefs } from '@vue/reactivity'
-import { isArray, isFunction, isObject } from '@vue/shared'
+import { type Data, isArray, isFunction, isObject } from '@vue/shared'
 import { type ComponentInternalInstance, setCurrentInstance } from './component'
 import { getAttrsProxy } from './componentAttrs'
-// import { SetupContext } from 'vue'
 import { type Block, fragmentKey } from './apiRender'
+import type { EmitFn, EmitsOptions } from './componentEmits'
+
+export type SetupContext<E = EmitsOptions> = E extends any
+  ? {
+      attrs: Data
+      emit: EmitFn<E>
+      expose: (exposed?: Record<string, any>) => void
+    }
+  : never
 
 export function setupComponent(instance: ComponentInternalInstance): void {
   const reset = setCurrentInstance(instance)
@@ -42,7 +50,9 @@ export function setupComponent(instance: ComponentInternalInstance): void {
   reset()
 }
 
-export function createSetupContext(instance: ComponentInternalInstance): any {
+export function createSetupContext(
+  instance: ComponentInternalInstance,
+): SetupContext {
   if (__DEV__) {
     // We use getters in dev in case libs like test-utils overwrite instance
     // properties (overwrites should not be done in prod)
@@ -57,6 +67,7 @@ export function createSetupContext(instance: ComponentInternalInstance): any {
     })
   } else {
     return {
+      expose: () => {},
       get attrs() {
         return getAttrsProxy(instance)
       },