fix(types): defineComponent object format with no props type (#839)

Author: xiaoxiangmoe

src/component/componentOptions.ts

@@ -88,7 +88,7 @@ export type ComponentOptionsWithArrayProps<
 } & ThisType<ComponentRenderProxy<Props, RawBindings, D, C, M>>
 
 export type ComponentOptionsWithoutProps<
-  Props = unknown,
+  Props = {},
   RawBindings = Data,
   D = Data,
   C extends ComputedOptions = {},

src/component/defineComponent.ts

@@ -17,8 +17,8 @@ export function defineComponent<
   C extends ComputedOptions = {},
   M extends MethodOptions = {}
 >(
-  options: ComponentOptionsWithoutProps<unknown, RawBindings, D, C, M>
-): VueProxy<unknown, RawBindings, D, C, M>
+  options: ComponentOptionsWithoutProps<{}, RawBindings, D, C, M>
+): VueProxy<{}, RawBindings, D, C, M>
 
 // overload 2: object format with array props declaration
 // props inferred as { [key in PropNames]?: any }

test/types/defineComponent.spec.ts

@@ -137,7 +137,7 @@ describe('defineComponent', () => {
     const App = defineComponent({
       setup(props, ctx) {
         isTypeEqual<SetupContext, typeof ctx>(true)
-        isTypeEqual<unknown, typeof props>(true)
+        isTypeEqual<{}, typeof props>(true)
         return () => null
       },
     })