fix: avoid accessing undeclared instance fields on type level

vuejs · haoqunjiang · Feb 17, 2020 · Nov 12, 2019 · Nov 12, 2019 · Nov 12, 2019
commit 3023f9f323e3ef6b809bca6e0b6c0e1c9cfd69e1
diff --git a/src/component/component.ts b/src/component/component.ts
@@ -65,15 +65,15 @@ interface ComponentOptionsWithProps<
   setup?: SetupFunction<Props, RawBindings>;
 }
 
-interface ComponentOptionsWithoutProps<Props = never, RawBindings = Data> {
+interface ComponentOptionsWithoutProps<Props = unknown, RawBindings = Data> {
   props?: undefined;
   setup?: SetupFunction<Props, RawBindings>;
 }
 
 // overload 1: object format with no props
 export function createComponent<RawBindings>(
-  options: ComponentOptionsWithoutProps<never, RawBindings>
-): VueProxy<never, RawBindings>;
+  options: ComponentOptionsWithoutProps<unknown, RawBindings>
+): VueProxy<unknown, RawBindings>;
 // overload 2: object format with object props declaration
 // see `ExtractPropTypes` in ./componentProps.ts
 export function createComponent<

diff --git a/test/types/createComponent.spec.ts b/test/types/createComponent.spec.ts
@@ -89,7 +89,7 @@ describe('createComponent', () => {
     const App = createComponent({
       setup(props, ctx) {
         isTypeEqual<SetupContext, typeof ctx>(true);
-        isTypeEqual<never, typeof props>(true);
+        isTypeEqual<unknown, typeof props>(true);
         return () => null;
       },
     });