Upgrade to react-scripts 4

* yarn add --exact react-scripts@4.0.3

https://github.com/facebook/create-react-app/blob/main/CHANGELOG-4.x.md

.eslintrc.yml

@@ -9,6 +9,7 @@ extends:
 globals:
   Atomics: readonly
   SharedArrayBuffer: readonly
+  process: readonly
 parser: babel-eslint
 parserOptions:
   ecmaFeatures:

package.json

@@ -30,7 +30,7 @@
     "react-motion": "^0.5.2",
     "react-redux": "^7.2.1",
     "react-router-dom": "5.2.0",
-    "react-scripts": "3.4.3",
+    "react-scripts": "4.0.3",
     "redux": "^4.1.0",
     "redux-thunk": "^2.3.0",
     "redux-undo": "1.0.1",
@@ -56,7 +56,7 @@
     "@testing-library/jest-dom": "^5.14.1",
     "@testing-library/react": "12.0.0",
     "babel-eslint": "^10.1.0",
-    "eslint": "^6.6.0",
+    "eslint": "^7.32.0",
     "eslint-nibble": "^6.1.0",
     "eslint-plugin-jest": "^23.20.0",
     "eslint-plugin-react": "^7.23.2",

src/components/SyncServiceSignIn/index.js

@@ -1,5 +1,3 @@
-/* global process */
-
 import React, { PureComponent, useState } from 'react';
 
 import './stylesheet.css';

src/reducers/org.js

@@ -1,5 +1,3 @@
-/* global process */
-
 import { Map, List, fromJS } from 'immutable';
 import _ from 'lodash';
 

src/reducers/org.unit.test.js

@@ -1,4 +1,3 @@
-/* global process */
 /* eslint jest/expect-expect: ["error", { "assertFunctionNames": ["expect", "check_is_undoable", "check_just_dirtying", "check_is_undoable_on_table"] }] */
 
 import { Map, fromJS } from 'immutable';

src/registerServiceWorker.js

@@ -1,5 +1,3 @@
-/* global process */
-
 // In production, we register a service worker to serve assets from local cache.
 
 // This lets the app load faster on subsequent visits in production, and gives

src/sync_backend_clients/gitlab_sync_backend_client.js

@@ -1,4 +1,3 @@
-/* global process */
 import { OAuth2AuthCodePKCE } from '@bity/oauth2-auth-code-pkce';
 import { orgFileExtensions } from '../lib/org_utils';
 import { getPersistedField } from '../util/settings_persister';