fix(types): accept generic Component type in h()

fix #922

test-dts/h.test-d.ts

@@ -6,7 +6,8 @@ import {
   ref,
   Fragment,
   Teleport,
-  Suspense
+  Suspense,
+  Component
 } from './index'
 
 describe('h inference w/ element', () => {
@@ -58,17 +59,15 @@ describe('h inference w/ functional component', () => {
   expectError(h(Func, { bar: 123 }))
 })
 
-describe('h inference w/ plain object component', () => {
+describe('h support w/ plain object component', () => {
   const Foo = {
     props: {
       foo: String
     }
   }
-
   h(Foo, { foo: 'ok' })
   h(Foo, { foo: 'ok', class: 'extra' })
-  // should fail on wrong type
-  expectError(h(Foo, { foo: 1 }))
+  // no inference in this case
 })
 
 describe('h inference w/ defineComponent', () => {
@@ -122,3 +121,13 @@ describe('h inference w/ defineComponent + direct function', () => {
   // should fail on wrong type
   expectError(h(Foo, { bar: 1, foo: 1 }))
 })
+
+// #922
+describe('h support for generic component type', () => {
+  function foo(bar: Component) {
+    h(bar)
+    h(bar, 'hello')
+    h(bar, { id: 'ok' }, 'hello')
+  }
+  foo({})
+})