fix flow / missing annotations

src/core/vdom/modules/ref.js

@@ -1,18 +1,18 @@
-/* flow */
+/* @flow */
 
 import { remove } from 'shared/util'
 
 export default {
-  create (_, vnode) {
+  create (_: any, vnode: VNodeWithData) {
     registerRef(vnode)
   },
-  update (oldVnode, vnode) {
+  update (oldVnode: VNodeWithData, vnode: VNodeWithData) {
     if (oldVnode.data.ref !== vnode.data.ref) {
       registerRef(oldVnode, true)
       registerRef(vnode)
     }
   },
-  destroy (vnode) {
+  destroy (vnode: VNodeWithData) {
     registerRef(vnode, true)
   }
 }

src/entries/web-compiler.js

@@ -1,3 +1,5 @@
+/* @flow */
+
 import { extend } from 'shared/util'
 import { compile as baseCompile, baseOptions } from 'web/compiler/index'
 import { detectErrors } from 'compiler/error-detector'
@@ -12,9 +14,10 @@ export function compile (
   options = options || {}
   const errors = []
   // allow injecting modules/directives
+  const baseModules = baseOptions.modules || []
   const modules = options.modules
-    ? baseOptions.modules.concat(options.modules)
-    : baseOptions.modules
+    ? baseModules.concat(options.modules)
+    : baseModules
   const directives = options.directives
     ? extend(extend({}, baseOptions.directives), options.directives)
     : baseOptions.directives

src/platforms/web/runtime/modules/events.js

@@ -3,7 +3,7 @@
 
 import { updateListeners } from 'core/vdom/helpers'
 
-function updateDOMListeners (oldVnode: VNodeWithData, vnode: VNodeWithData) {
+function updateDOMListeners (oldVnode, vnode) {
   if (!oldVnode.data.on && !vnode.data.on) {
     return
   }

src/platforms/web/runtime/patch.js

@@ -1,3 +1,5 @@
+/* @flow */
+
 import * as nodeOps from 'web/runtime/node-ops'
 import { createPatchFunction } from 'core/vdom/patch'
 import baseModules from 'core/vdom/modules/index'

src/platforms/web/runtime/transition-util.js

@@ -1,3 +1,5 @@
+/* @flow */
+
 import { inBrowser } from 'core/util/index'
 import { isIE9 } from 'web/util/index'
 import { remove } from 'shared/util'
@@ -47,7 +49,7 @@ export function removeTransitionClass (el: any, cls: string) {
 
 export function whenTransitionEnds (
   el: Element,
-  expectedType: ?stirng,
+  expectedType: ?string,
   cb: Function
 ) {
   const { type, timeout, propCount } = getTransitionInfo(el, expectedType)
@@ -77,6 +79,7 @@ export function getTransitionInfo (el: Element, expectedType?: ?string): {
   type: ?string;
   propCount: number;
   timeout: number;
+  hasTransform: boolean;
 } {
   const styles = window.getComputedStyle(el)
   const transitioneDelays = styles[transitionProp + 'Delay'].split(', ')