fix: fix mixin infer

Author: gulewei

types/options.d.ts

@@ -106,8 +106,8 @@ export type ThisTypedComponentOptionsWithArrayProps<
     Record<PropNames, any>,
     SetupBindings
   > & {
-    mixins?: Mixin[]
-    extends?: Extends
+    mixins?: (Mixin | typeof Vue)[]
+    extends?: Extends | typeof Vue
   } & ThisType<
     CombinedVueInstance<
       V,
@@ -143,8 +143,8 @@ export type ThisTypedComponentOptionsWithRecordProps<
     Props,
     SetupBindings
   > & {
-    mixins?: Mixin[]
-    extends?: Extends
+    mixins?: (Mixin | typeof Vue)[]
+    extends?: Extends | typeof Vue
   } & ThisType<
     CombinedVueInstance<
       V,

types/vue.d.ts

@@ -100,6 +100,14 @@ export interface Vue<
 
 type ComponentMixin = ComponentOptions<any, any, any, any, any>
 
+// IntersectionMixin cannot infer `data` from ComponentOptions<...>
+type PrepareMixinData<M extends ComponentMixin, D = Required<M>['data']> = {
+  [K in keyof M]: K extends 'data'
+    ? D extends (...args: any) => infer R
+      ? (this: any) => R
+      : (this: any) => D
+    : M[K]
+}
 export type CombinedVueInstance<
   Instance extends Vue,
   Data,
@@ -109,7 +117,9 @@ export type CombinedVueInstance<
   SetupBindings = {},
   Mixin extends ComponentMixin = ComponentMixin,
   Extends extends ComponentMixin = ComponentMixin,
-  PublicMixin = IntersectionMixin<Mixin> & IntersectionMixin<Extends>
+  PublicMixin = IntersectionMixin<PrepareMixinData<Mixin>> &
+    IntersectionMixin<Extends> &
+    IntersectionMixin<ComponentOptions<any, any, any, any, any>> // prevent produce `never` in UnwrapMixinsType
 > = UnwrapMixinsType<PublicMixin, 'D'> &
   Data &
   UnwrapMixinsType<PublicMixin, 'M'> &