workflow: setup eslint for prohibited syntax and globals

fix #1285

packages/compiler-core/src/utils.ts

@@ -30,7 +30,7 @@ import {
   KEEP_ALIVE,
   BASE_TRANSITION
 } from './runtimeHelpers'
-import { isString, isObject, hyphenate } from '@vue/shared'
+import { isString, isObject, hyphenate, extend } from '@vue/shared'
 import { parse } from '@babel/parser'
 import { walk } from 'estree-walker'
 import { Node } from '@babel/types'
@@ -119,7 +119,11 @@ export function advancePositionWithClone(
   source: string,
   numberOfCharacters: number = source.length
 ): Position {
-  return advancePositionWithMutation({ ...pos }, source, numberOfCharacters)
+  return advancePositionWithMutation(
+    extend({}, pos),
+    source,
+    numberOfCharacters
+  )
 }
 
 // advance by mutation without cloning (for performance reasons), since this