refactor(compiler-sfc): remove unnecessary emits type codegen

This is no longer necessary as we no longer recommend type checking generated code

packages/compiler-sfc/__tests__/__snapshots__/compileScript.spec.ts.snap

@@ -1388,7 +1388,7 @@ export interface Emits { (e: 'foo' | 'bar'): void }
       
 export default /*#__PURE__*/_defineComponent({
   emits: [\\"foo\\", \\"bar\\"],
-  setup(__props, { expose: __expose, emit }: { emit: ({ (e: 'foo' | 'bar'): void }), expose: any, slots: any, attrs: any }) {
+  setup(__props, { expose: __expose, emit }) {
   __expose();
 
       
@@ -1405,7 +1405,7 @@ export type Emits = { (e: 'foo' | 'bar'): void }
       
 export default /*#__PURE__*/_defineComponent({
   emits: [\\"foo\\", \\"bar\\"],
-  setup(__props, { expose: __expose, emit }: { emit: ({ (e: 'foo' | 'bar'): void }), expose: any, slots: any, attrs: any }) {
+  setup(__props, { expose: __expose, emit }) {
   __expose();
 
       
@@ -1439,7 +1439,23 @@ interface Emits { (e: 'foo' | 'bar'): void }
       
 export default /*#__PURE__*/_defineComponent({
   emits: [\\"foo\\", \\"bar\\"],
-  setup(__props, { expose: __expose, emit }: { emit: ({ (e: 'foo' | 'bar'): void }), expose: any, slots: any, attrs: any }) {
+  setup(__props, { expose: __expose, emit }) {
+  __expose();
+
+      
+      
+return { emit }
+}
+
+})"
+`;
+
+exports[`SFC compile <script setup> > with TypeScript > defineEmits w/ type (property syntax) 1`] = `
+"import { defineComponent as _defineComponent } from 'vue'
+
+export default /*#__PURE__*/_defineComponent({
+  emits: [\\"foo\\", \\"bar\\"],
+  setup(__props, { expose: __expose, emit }) {
   __expose();
 
       
@@ -1456,7 +1472,7 @@ export type Emits = (e: 'foo' | 'bar') => void
       
 export default /*#__PURE__*/_defineComponent({
   emits: [\\"foo\\", \\"bar\\"],
-  setup(__props, { expose: __expose, emit }: { emit: ((e: 'foo' | 'bar') => void), expose: any, slots: any, attrs: any }) {
+  setup(__props, { expose: __expose, emit }) {
   __expose();
 
       
@@ -1473,23 +1489,7 @@ type Emits = (e: 'foo' | 'bar') => void
       
 export default /*#__PURE__*/_defineComponent({
   emits: [\\"foo\\", \\"bar\\"],
-  setup(__props, { expose: __expose, emit }: { emit: ((e: 'foo' | 'bar') => void), expose: any, slots: any, attrs: any }) {
-  __expose();
-
-      
-      
-return { emit }
-}
-
-})"
-`;
-
-exports[`SFC compile <script setup> > with TypeScript > defineEmits w/ type (tuple syntax) 1`] = `
-"import { defineComponent as _defineComponent } from 'vue'
-
-export default /*#__PURE__*/_defineComponent({
-  emits: [\\"foo\\", \\"bar\\"],
-  setup(__props, { expose: __expose, emit }: { emit: ({ foo: [], bar: [] }), expose: any, slots: any, attrs: any }) {
+  setup(__props, { expose: __expose, emit }) {
   __expose();
 
       
@@ -1506,7 +1506,7 @@ type Emits = { (e: 'foo' | 'bar'): void }
       
 export default /*#__PURE__*/_defineComponent({
   emits: [\\"foo\\", \\"bar\\"],
-  setup(__props, { expose: __expose, emit }: { emit: ({ (e: 'foo' | 'bar'): void }), expose: any, slots: any, attrs: any }) {
+  setup(__props, { expose: __expose, emit }) {
   __expose();
 
       
@@ -1522,7 +1522,7 @@ exports[`SFC compile <script setup> > with TypeScript > defineEmits w/ type (typ
 
 export default /*#__PURE__*/_defineComponent({
   emits: [\\"foo\\", \\"bar\\", \\"baz\\"],
-  setup(__props, { expose: __expose, emit }: { emit: ({(e: 'foo' | 'bar'): void; (e: 'baz', id: number): void;}), expose: any, slots: any, attrs: any }) {
+  setup(__props, { expose: __expose, emit }) {
   __expose();
 
       
@@ -1538,7 +1538,7 @@ exports[`SFC compile <script setup> > with TypeScript > defineEmits w/ type 1`]
 
 export default /*#__PURE__*/_defineComponent({
   emits: [\\"foo\\", \\"bar\\"],
-  setup(__props, { expose: __expose, emit }: { emit: ((e: 'foo' | 'bar') => void), expose: any, slots: any, attrs: any }) {
+  setup(__props, { expose: __expose, emit }) {
   __expose();
 
       
@@ -1556,7 +1556,7 @@ exports[`SFC compile <script setup> > with TypeScript > defineEmits w/ type from
       
 export default /*#__PURE__*/_defineComponent({
   emits: [\\"foo\\", \\"bar\\"],
-  setup(__props, { expose: __expose, emit }: { emit: ({ (e: 'foo' | 'bar'): void }), expose: any, slots: any, attrs: any }) {
+  setup(__props, { expose: __expose, emit }) {
   __expose();
 
       

packages/compiler-sfc/__tests__/compileScript.spec.ts

@@ -1414,7 +1414,6 @@ const emit = defineEmits(['a', 'b'])
       </script>
       `)
       assertCode(content)
-      expect(content).toMatch(`emit: ((e: 'foo' | 'bar') => void),`)
       expect(content).toMatch(`emits: ["foo", "bar"]`)
     })
 
@@ -1437,7 +1436,6 @@ const emit = defineEmits(['a', 'b'])
       </script>
       `)
       assertCode(content)
-      expect(content).toMatch(`emit: (${type}),`)
       expect(content).toMatch(`emits: ["foo", "bar", "baz"]`)
     })
 
@@ -1449,7 +1447,6 @@ const emit = defineEmits(['a', 'b'])
       </script>
       `)
       assertCode(content)
-      expect(content).toMatch(`emit: ({ (e: 'foo' | 'bar'): void }),`)
       expect(content).toMatch(`emits: ["foo", "bar"]`)
     })
 
@@ -1461,7 +1458,6 @@ const emit = defineEmits(['a', 'b'])
       </script>
       `)
       assertCode(content)
-      expect(content).toMatch(`emit: ({ (e: 'foo' | 'bar'): void }),`)
       expect(content).toMatch(`emits: ["foo", "bar"]`)
     })
 
@@ -1475,7 +1471,6 @@ const emit = defineEmits(['a', 'b'])
       </script>
       `)
       assertCode(content)
-      expect(content).toMatch(`emit: ({ (e: 'foo' | 'bar'): void }),`)
       expect(content).toMatch(`emits: ["foo", "bar"]`)
     })
 
@@ -1487,7 +1482,6 @@ const emit = defineEmits(['a', 'b'])
       </script>
       `)
       assertCode(content)
-      expect(content).toMatch(`emit: ({ (e: 'foo' | 'bar'): void }),`)
       expect(content).toMatch(`emits: ["foo", "bar"]`)
     })
 
@@ -1499,7 +1493,6 @@ const emit = defineEmits(['a', 'b'])
       </script>
       `)
       assertCode(content)
-      expect(content).toMatch(`emit: ({ (e: 'foo' | 'bar'): void }),`)
       expect(content).toMatch(`emits: ["foo", "bar"]`)
     })
 
@@ -1511,7 +1504,6 @@ const emit = defineEmits(['a', 'b'])
       </script>
       `)
       assertCode(content)
-      expect(content).toMatch(`emit: ((e: 'foo' | 'bar') => void),`)
       expect(content).toMatch(`emits: ["foo", "bar"]`)
     })
 
@@ -1523,7 +1515,6 @@ const emit = defineEmits(['a', 'b'])
       </script>
       `)
       assertCode(content)
-      expect(content).toMatch(`emit: ((e: 'foo' | 'bar') => void),`)
       expect(content).toMatch(`emits: ["foo", "bar"]`)
     })
 
@@ -1536,11 +1527,10 @@ const emit = defineEmits(['a', 'b'])
       </script>
       `)
       assertCode(content)
-      expect(content).toMatch(`setup(__props, { expose: __expose, emit }) {`)
       expect(content).toMatch(`emits: ['foo']`)
     })
 
-    test('defineEmits w/ type (tuple syntax)', () => {
+    test('defineEmits w/ type (property syntax)', () => {
       const { content } = compile(`
       <script setup lang="ts">
       const emit = defineEmits<{ foo: [], bar: [] }>()
@@ -1882,7 +1872,7 @@ const emit = defineEmits(['a', 'b'])
       )
     })
 
-    test('mixed usage of tuple / call signature in defineEmits', () => {
+    test('mixed usage of property / call signature in defineEmits', () => {
       expect(() =>
         compile(`<script setup lang="ts">
         defineEmits<{

packages/compiler-sfc/src/compileScript.ts

@@ -322,7 +322,6 @@ export function compileScript(
   let propsIdentifier: string | undefined
   let emitsRuntimeDecl: Node | undefined
   let emitsTypeDecl: EmitsDeclType | undefined
-  let emitsTypeDeclRaw: Node | undefined
   let emitIdentifier: string | undefined
   let optionsRuntimeDecl: Node | undefined
   let hasAwait = false
@@ -582,7 +581,7 @@ export function compileScript(
         )
       }
 
-      emitsTypeDeclRaw = node.typeParameters.params[0]
+      const emitsTypeDeclRaw = node.typeParameters.params[0]
       emitsTypeDecl = resolveQualifiedType(
         emitsTypeDeclRaw,
         node => node.type === 'TSFunctionType' || node.type === 'TSTypeLiteral'
@@ -1623,15 +1622,6 @@ export function compileScript(
   }
   if (destructureElements.length) {
     args += `, { ${destructureElements.join(', ')} }`
-    if (emitsTypeDecl) {
-      const content = emitsTypeDecl.__fromNormalScript
-        ? script!.content
-        : scriptSetup.content
-      args += `: { emit: (${content.slice(
-        emitsTypeDecl.start!,
-        emitsTypeDecl.end!
-      )}), expose: any, slots: any, attrs: any }`
-    }
   }
 
   // 10. generate return statement