wip(ssr): restructure

packages/runtime-core/src/index.ts

@@ -103,6 +103,7 @@ export { registerRuntimeCompiler } from './component'
 
 // For server-renderer
 export { createComponentInstance, setupComponent } from './component'
+export { renderComponentRoot } from './componentRenderUtils'
 
 // Types -----------------------------------------------------------------------
 

packages/runtime-core/src/vnode.ts

@@ -4,7 +4,9 @@ import {
   isString,
   isObject,
   EMPTY_ARR,
-  extend
+  extend,
+  normalizeClass,
+  normalizeStyle
 } from '@vue/shared'
 import {
   ComponentInternalInstance,
@@ -378,43 +380,6 @@ export function normalizeChildren(vnode: VNode, children: unknown) {
   vnode.shapeFlag |= type
 }
 
-function normalizeStyle(
-  value: unknown
-): Record<string, string | number> | void {
-  if (isArray(value)) {
-    const res: Record<string, string | number> = {}
-    for (let i = 0; i < value.length; i++) {
-      const normalized = normalizeStyle(value[i])
-      if (normalized) {
-        for (const key in normalized) {
-          res[key] = normalized[key]
-        }
-      }
-    }
-    return res
-  } else if (isObject(value)) {
-    return value
-  }
-}
-
-export function normalizeClass(value: unknown): string {
-  let res = ''
-  if (isString(value)) {
-    res = value
-  } else if (isArray(value)) {
-    for (let i = 0; i < value.length; i++) {
-      res += normalizeClass(value[i]) + ' '
-    }
-  } else if (isObject(value)) {
-    for (const name in value) {
-      if (value[name]) {
-        res += name + ' '
-      }
-    }
-  }
-  return res.trim()
-}
-
 const handlersRE = /^on|^vnode/
 
 export function mergeProps(...args: (Data & VNodeProps)[]) {