feat: support ref in v-for, remove compat deprecation warnings

packages/runtime-core/src/vnode.ts

@@ -42,7 +42,6 @@ import { hmrDirtyComponents } from './hmr'
 import { convertLegacyComponent } from './compat/component'
 import { convertLegacyVModelProps } from './compat/componentVModel'
 import { defineLegacyVNodeProperties } from './compat/renderFn'
-import { convertLegacyRefInFor } from './compat/ref'
 
 export const Fragment = Symbol(__DEV__ ? 'Fragment' : undefined) as any as {
   __isFragment: true
@@ -73,7 +72,8 @@ export type VNodeRef =
 export type VNodeNormalizedRefAtom = {
   i: ComponentInternalInstance
   r: VNodeRef
-  f?: boolean // v2 compat only, refInFor marker
+  k?: string // setup ref key
+  f?: boolean // refInFor marker
 }
 
 export type VNodeNormalizedRef =
@@ -92,6 +92,8 @@ export type VNodeHook =
 export type VNodeProps = {
   key?: string | number | symbol
   ref?: VNodeRef
+  ref_for?: boolean
+  ref_key?: string
 
   // vnode hooks
   onVnodeBeforeMount?: VNodeMountHook | VNodeMountHook[]
@@ -380,11 +382,15 @@ export const InternalObjectKey = `__vInternal`
 const normalizeKey = ({ key }: VNodeProps): VNode['key'] =>
   key != null ? key : null
 
-const normalizeRef = ({ ref }: VNodeProps): VNodeNormalizedRefAtom | null => {
+const normalizeRef = ({
+  ref,
+  ref_key,
+  ref_for
+}: VNodeProps): VNodeNormalizedRefAtom | null => {
   return (
     ref != null
       ? isString(ref) || isRef(ref) || isFunction(ref)
-        ? { i: currentRenderingInstance, r: ref }
+        ? { i: currentRenderingInstance, r: ref, k: ref_key, f: !!ref_for }
         : ref
       : null
   ) as any
@@ -468,7 +474,6 @@ function createBaseVNode(
 
   if (__COMPAT__) {
     convertLegacyVModelProps(vnode)
-    convertLegacyRefInFor(vnode)
     defineLegacyVNodeProperties(vnode)
   }