polish: add warning when .native modifier is used on native HTML elements (#9884)

Author: NataliaTepluhina

src/core/vdom/create-element.js

@@ -98,6 +98,12 @@ export function _createElement (
     ns = (context.$vnode && context.$vnode.ns) || config.getTagNamespace(tag)
     if (config.isReservedTag(tag)) {
       // platform built-in elements
+      if (process.env.NODE_ENV !== 'production' && isDef(data) && isDef(data.nativeOn)) {
+        warn(
+          `The .native modifier for v-on is only valid on components but it was used on <${tag}>.`,
+          context
+        )
+      }
       vnode = new VNode(
         config.parsePlatformTagName(tag), data, children,
         undefined, undefined, context

test/unit/features/directives/on.spec.js

@@ -460,6 +460,20 @@ describe('Directive v-on', () => {
     expect(spy).toHaveBeenCalled()
   })
 
+  it('should throw a warning if native modifier is used on native HTML element', () => {
+    vm = new Vue({
+      el,
+      template: `
+        <button @click.native="foo"></button>
+      `,
+      methods: { foo: spy },
+    })
+
+    triggerEvent(vm.$el, 'click')
+    expect(`The .native modifier for v-on is only valid on components but it was used on <button>.`).toHaveBeenWarned()
+    expect(spy.calls.count()).toBe(0)
+  })
+
   it('.once modifier should work with child components', () => {
     vm = new Vue({
       el,