message: fix(core): remove trailing comma in function signature
  Fix
diff: @@ -207,7 +207,7 @@ export function createComponent (
  export function createComponentInstanceForVnode (
  vnode: any, // we know it's MountedComponentVNode but flow doesn't
  - parent: any, // activeInstance in lifecycle state
  + parent: any // activeInstance in lifecycle state
  ): Component {
  const options: InternalComponentOptions = {
  _isComponent: true,
  