fix(types/tsx): optional props from Mixin/Extends are treated as required (#2048)

packages/runtime-core/src/componentPublicInstance.ts

@@ -77,9 +77,11 @@ type MixinToOptionTypes<T> = T extends ComponentOptionsBase<
   infer M,
   infer Mixin,
   infer Extends,
-  any
+  any,
+  any,
+  infer Defaults
 >
-  ? OptionTypesType<P & {}, B & {}, D & {}, C & {}, M & {}> &
+  ? OptionTypesType<P & {}, B & {}, D & {}, C & {}, M & {}, Defaults & {}> &
       IntersectionMixin<Mixin> &
       IntersectionMixin<Extends>
   : never
@@ -130,6 +132,8 @@ export type CreateComponentPublicInstance<
   Extends extends ComponentOptionsMixin = ComponentOptionsMixin,
   E extends EmitsOptions = {},
   PublicProps = P,
+  Defaults = {},
+  MakeDefaultsOptional extends boolean = false,
   PublicMixin = IntersectionMixin<Mixin> & IntersectionMixin<Extends>,
   PublicP = UnwrapMixinsType<PublicMixin, 'P'> & EnsureNonVoid<P>,
   PublicB = UnwrapMixinsType<PublicMixin, 'B'> & EnsureNonVoid<B>,
@@ -137,7 +141,9 @@ export type CreateComponentPublicInstance<
   PublicC extends ComputedOptions = UnwrapMixinsType<PublicMixin, 'C'> &
     EnsureNonVoid<C>,
   PublicM extends MethodOptions = UnwrapMixinsType<PublicMixin, 'M'> &
-    EnsureNonVoid<M>
+    EnsureNonVoid<M>,
+  PublicDefaults = UnwrapMixinsType<PublicMixin, 'Defaults'> &
+    EnsureNonVoid<Defaults>
 > = ComponentPublicInstance<
   PublicP,
   PublicB,
@@ -146,7 +152,9 @@ export type CreateComponentPublicInstance<
   PublicM,
   E,
   PublicProps,
-  ComponentOptionsBase<P, B, D, C, M, Mixin, Extends, E>
+  PublicDefaults,
+  MakeDefaultsOptional,
+  ComponentOptionsBase<P, B, D, C, M, Mixin, Extends, E, string, Defaults>
 >
 
 // public properties exposed on the proxy, which is used as the render context
@@ -159,11 +167,15 @@ export type ComponentPublicInstance<
   M extends MethodOptions = {},
   E extends EmitsOptions = {},
   PublicProps = P,
-  Options = ComponentOptionsBase<any, any, any, any, any, any, any, any>
+  Defaults = {},
+  MakeDefaultsOptional extends boolean = false,
+  Options = ComponentOptionsBase<any, any, any, any, any, any, any, any, any>
 > = {
   $: ComponentInternalInstance
   $data: D
-  $props: P & PublicProps
+  $props: MakeDefaultsOptional extends true
+    ? Partial<Defaults> & Omit<P & PublicProps, keyof Defaults>
+    : P & PublicProps
   $attrs: Data
   $refs: Data
   $slots: Slots