Make the type right for BindingFunc

Author: Tao-VanJS

package.json

@@ -1,6 +1,6 @@
 {
   "name": "vanjs-core",
-  "version": "1.2.0-rc.2",
+  "version": "1.2.0-rc.3",
   "description": "VanJS. A minimalist React-like UI library based on vanilla JavaScript and DOM.",
   "files": [
     "src/van.js",

public/van-1.2.0.d.ts

@@ -15,7 +15,7 @@ export type Props = Record<string, PropValue | StateView<PropValue> | (() => Pro
 
 export type ValidChildDomValue = Primitive | Node | null | undefined
 
-export type BindingFunc = (dom: Node) => ValidChildDomValue
+export type BindingFunc = (dom: Node | undefined) => ValidChildDomValue
 
 export type ChildDom = ValidChildDomValue | StateView<Primitive | null | undefined> | BindingFunc | readonly ChildDom[]
 

public/van-1.2.0.debug.d.ts

@@ -15,7 +15,7 @@ export type Props = Record<string, PropValue | StateView<PropValue> | (() => Pro
 
 export type ValidChildDomValue = Primitive | Node | null | undefined
 
-export type BindingFunc = (dom: Node) => ValidChildDomValue
+export type BindingFunc = (dom: Node | undefined) => ValidChildDomValue
 
 export type ChildDom = ValidChildDomValue | StateView<Primitive | null | undefined> | BindingFunc | readonly ChildDom[]
 

public/van-1.2.0.min.d.ts

@@ -15,7 +15,7 @@ export type Props = Record<string, PropValue | StateView<PropValue> | (() => Pro
 
 export type ValidChildDomValue = Primitive | Node | null | undefined
 
-export type BindingFunc = (dom: Node) => ValidChildDomValue
+export type BindingFunc = (dom: Node | undefined) => ValidChildDomValue
 
 export type ChildDom = ValidChildDomValue | StateView<Primitive | null | undefined> | BindingFunc | readonly ChildDom[]
 

public/van-latest.d.ts

@@ -15,7 +15,7 @@ export type Props = Record<string, PropValue | StateView<PropValue> | (() => Pro
 
 export type ValidChildDomValue = Primitive | Node | null | undefined
 
-export type BindingFunc = (dom: Node) => ValidChildDomValue
+export type BindingFunc = (dom: Node | undefined) => ValidChildDomValue
 
 export type ChildDom = ValidChildDomValue | StateView<Primitive | null | undefined> | BindingFunc | readonly ChildDom[]
 

public/van-latest.debug.d.ts

@@ -15,7 +15,7 @@ export type Props = Record<string, PropValue | StateView<PropValue> | (() => Pro
 
 export type ValidChildDomValue = Primitive | Node | null | undefined
 
-export type BindingFunc = (dom: Node) => ValidChildDomValue
+export type BindingFunc = (dom: Node | undefined) => ValidChildDomValue
 
 export type ChildDom = ValidChildDomValue | StateView<Primitive | null | undefined> | BindingFunc | readonly ChildDom[]
 

public/van-latest.min.d.ts

@@ -15,7 +15,7 @@ export type Props = Record<string, PropValue | StateView<PropValue> | (() => Pro
 
 export type ValidChildDomValue = Primitive | Node | null | undefined
 
-export type BindingFunc = (dom: Node) => ValidChildDomValue
+export type BindingFunc = (dom: Node | undefined) => ValidChildDomValue
 
 export type ChildDom = ValidChildDomValue | StateView<Primitive | null | undefined> | BindingFunc | readonly ChildDom[]
 

src/van.d.ts

@@ -15,7 +15,7 @@ export type Props = Record<string, PropValue | StateView<PropValue> | (() => Pro
 
 export type ValidChildDomValue = Primitive | Node | null | undefined
 
-export type BindingFunc = (dom: Node) => ValidChildDomValue
+export type BindingFunc = (dom: Node | undefined) => ValidChildDomValue
 
 export type ChildDom = ValidChildDomValue | StateView<Primitive | null | undefined> | BindingFunc | readonly ChildDom[]
 

src/van.debug.d.ts

@@ -15,7 +15,7 @@ export type Props = Record<string, PropValue | StateView<PropValue> | (() => Pro
 
 export type ValidChildDomValue = Primitive | Node | null | undefined
 
-export type BindingFunc = (dom: Node) => ValidChildDomValue
+export type BindingFunc = (dom: Node | undefined) => ValidChildDomValue
 
 export type ChildDom = ValidChildDomValue | StateView<Primitive | null | undefined> | BindingFunc | readonly ChildDom[]
 

test/van.test.ts

@@ -1335,7 +1335,7 @@ const runTests = async (van: VanForTesting, msgDom: Element, {debug}: BundleOpti
   const OptimizedCounter = ({
     van: {state, derive, val, tags: {button, div}},
     id, init = 0, buttonStyle = "👍👎",
-  }: CounterProps) => <HTMLDivElement>div((dom: Node) => {
+  }: CounterProps) => <HTMLDivElement>div((dom: Node | undefined) => {
     if (dom) return dom
 
     const counter = state(init)