perf: add __NO_SIDE_EFFECTS__ comment

Author: chenfan0

packages/reactivity/src/collectionHandlers.ts

@@ -331,6 +331,7 @@ const [
   shallowReadonlyInstrumentations
 ] = /* #__PURE__*/ createInstrumentations()
 
+/*! #__NO_SIDE_EFFECTS__ */
 function createInstrumentationGetter(isReadonly: boolean, shallow: boolean) {
   const instrumentations = shallow
     ? isReadonly

packages/runtime-core/src/devtools.ts

@@ -123,6 +123,7 @@ export const devtoolsComponentRemoved = (
   }
 }
 
+/*! #__NO_SIDE_EFFECTS__ */
 function createDevtoolsComponentHook(hook: DevtoolsHooks) {
   return (component: ComponentInternalInstance) => {
     emit(

packages/server-renderer/src/helpers/ssrRenderAttrs.ts

@@ -12,7 +12,7 @@ import {
 } from '@vue/shared'
 
 // leading comma for empty string ""
-const shouldIgnoreProp = makeMap(
+const shouldIgnoreProp = /*#__PURE__*/ makeMap(
   `,key,ref,innerHTML,textContent,ref_key,ref_for`
 )
 

packages/shared/src/general.ts

@@ -17,6 +17,7 @@ export const isOn = (key: string) => onRE.test(key)
 
 export const isModelListener = (key: string) => key.startsWith('onUpdate:')
 
+/*! #__NO_SIDE_EFFECTS__ */
 export const extend = Object.assign
 
 export const remove = <T>(arr: T[], el: T) => {

packages/shared/src/makeMap.ts

@@ -5,6 +5,8 @@
  * \/\*#\_\_PURE\_\_\*\/
  * So that rollup can tree-shake them if necessary.
  */
+
+/*! #__NO_SIDE_EFFECTS__ */
 export function makeMap(
   str: string,
   expectsLowerCase?: boolean