workflow: setup eslint for prohibited syntax and globals

fix #1285

.eslintrc.js

@@ -0,0 +1,45 @@
+const DOMGlobals = ['window', 'document']
+const NodeGlobals = ['module', 'require']
+
+module.exports = {
+  parser: '@typescript-eslint/parser',
+  parserOptions: {
+    sourceType: 'module'
+  },
+  rules: {
+    // most of the codebase are expected to be env agnostic
+    'no-restricted-globals': ['error', ...DOMGlobals, ...NodeGlobals],
+    // since we target ES2015 for baseline support, we need to forbid object
+    // rest spread usage (both assign and destructure)
+    'no-restricted-syntax': [
+      'error',
+      'ObjectExpression > SpreadElement',
+      'ObjectPattern > RestElement'
+    ]
+  },
+  overrides: [
+    // Packages targeting DOM
+    {
+      files: ['packages/{vue,runtime-dom}/**'],
+      rules: {
+        'no-restricted-globals': ['error', ...NodeGlobals]
+      }
+    },
+    // Packages targeting Node
+    {
+      files: ['packages/{compiler-sfc,compiler-ssr,server-renderer}/**'],
+      rules: {
+        'no-restricted-globals': ['error', ...DOMGlobals],
+        'no-restricted-syntax': 'off'
+      }
+    },
+    // Private package, no syntax restrictions
+    {
+      files: ['packages/template-explorer/**'],
+      rules: {
+        'no-restricted-globals': ['error', ...NodeGlobals],
+        'no-restricted-syntax': 'off'
+      }
+    }
+  ]
+}