feat: v-once

Note: only compiler transform is tested - integration with runtime
still needs to be tested.

packages/compiler-dom/__tests__/transforms/vCloak.spec.ts

@@ -1,26 +1,24 @@
 import {
   parse,
   transform,
-  CompilerOptions,
-  ElementNode
+  ElementNode,
+  CallExpression
 } from '@vue/compiler-core'
 import { transformCloak } from '../../src/transforms/vCloak'
 import { transformElement } from '../../../compiler-core/src/transforms/transformElement'
-import { CallExpression } from '../../src'
 
-function transformWithCloak(template: string, options: CompilerOptions = {}) {
+function transformWithCloak(template: string) {
   const ast = parse(template)
   transform(ast, {
     nodeTransforms: [transformElement],
     directiveTransforms: {
       cloak: transformCloak
-    },
-    ...options
+    }
   })
   return ast.children[0] as ElementNode
 }
 
-describe('compiler: `v-cloak` transform', () => {
+describe('compiler: v-cloak transform', () => {
   test('should add no props to DOM', () => {
     const node = transformWithCloak(`<div v-cloak/>`)
     const codegenArgs = (node.codegenNode as CallExpression).arguments