第一

packages/runtime-core/src/component.ts

@@ -756,6 +756,7 @@ let installWithProxy: (i: ComponentInternalInstance) => void
  * For runtime-dom to register the compiler.
  * Note the exported method uses any to avoid d.ts relying on the compiler types.
  */
+// ？？？
 export function registerRuntimeCompiler(_compile: any) {
   compile = _compile
   installWithProxy = i => {