wip(ssr): basic components

packages/runtime-core/src/componentRenderUtils.ts

@@ -19,6 +19,13 @@ import { warn } from './warning'
 // resolveComponent, resolveDirective) during render
 export let currentRenderingInstance: ComponentInternalInstance | null = null
 
+// exposed for server-renderer only
+export function setCurrentRenderingInstance(
+  instance: ComponentInternalInstance | null
+) {
+  currentRenderingInstance = instance
+}
+
 // dev only flag to track whether $attrs was used during render.
 // If $attrs was used during render then the warning for failed attrs
 // fallthrough can be suppressed.

packages/runtime-core/src/index.ts

@@ -101,7 +101,10 @@ export { registerRuntimeCompiler } from './component'
 
 // SSR -------------------------------------------------------------------------
 import { createComponentInstance, setupComponent } from './component'
-import { renderComponentRoot } from './componentRenderUtils'
+import {
+  renderComponentRoot,
+  setCurrentRenderingInstance
+} from './componentRenderUtils'
 import { isVNode, normalizeVNode } from './vnode'
 
 // SSR utils are only exposed in cjs builds.
@@ -109,6 +112,7 @@ const _ssrUtils = {
   createComponentInstance,
   setupComponent,
   renderComponentRoot,
+  setCurrentRenderingInstance,
   isVNode,
   normalizeVNode
 }