fix: add functions to scoped slots typing (#1022)

Author: healqq

packages/test-utils/types/index.d.ts

@@ -132,7 +132,7 @@ interface MountOptions<V extends Vue> extends ComponentOptions<V> {
   mocks?: object | false
   parentComponent?: Component
   slots?: Slots
-  scopedSlots?: Record<string, string>
+  scopedSlots?: Record<string, string | Function>
   stubs?: Stubs | false,
   attrs?: Record<string, string>
   listeners?: Record<string, Function | Function[]>

packages/test-utils/types/test/shallow.ts

@@ -33,6 +33,12 @@ shallowMount(ClassComponent, {
     foo: [normalOptions, functionalOptions],
     baz: ClassComponent
   },
+  scopedSlots: {
+    scopedFoo: `<div>scopedFoo</div>`,
+    scopedBaz() {
+      return `<div>scopedBaz</div>`;
+    },
+  },
   stubs: {
     foo: normalOptions,
     bar: functionalOptions,