update linting settings

.eslintrc.js

@@ -1,5 +1,6 @@
 'use strict';
-const SUPPORTED_NODE_VERSIONS = require('./packages/core-js-builder/package.json').engines.node;
+const RESTRICTED_GLOBALS = require('confusing-browser-globals');
+const SUPPORTED_NODE_VERSIONS = require('core-js-builder/package').engines.node;
 
 const base = {
   // possible errors:
@@ -51,6 +52,8 @@ const base = {
   'no-prototype-builtins': 'error',
   // disallow multiple spaces in a regular expression literal
   'no-regex-spaces': 'error',
+  // disallow specific global variables
+  'no-restricted-globals': ['error', ...RESTRICTED_GLOBALS],
   // disallow returning values from setters
   'no-setter-return': 'error',
   // disallow sparse arrays

package.json

@@ -25,6 +25,7 @@
     "babel-loader": "^8.2.2",
     "babel-plugin-transform-es2015-modules-simple-commonjs": "~0.3.0",
     "babel-plugin-transform-for-of-as-array": "^1.1.1",
+    "confusing-browser-globals": "^1.0.10",
     "core-js": "file:./packages/core-js",
     "core-js-builder": "file:./packages/core-js-builder",
     "core-js-compat": "file:./packages/core-js-compat",

packages/core-js/internals/global.js

@@ -7,6 +7,7 @@ module.exports =
   /* global globalThis -- safe */
   check(typeof globalThis == 'object' && globalThis) ||
   check(typeof window == 'object' && window) ||
+  // eslint-disable-next-line no-restricted-globals -- safe
   check(typeof self == 'object' && self) ||
   check(typeof global == 'object' && global) ||
   // eslint-disable-next-line no-new-func -- fallback