Automatically setup TypeScript when detected (#5549)

* Don't resolve TS files if it's not detected in the project

* Automatically create tsconfig.json file for user

* Remove always false check

* Add missing file

* Don't filter paths too early

packages/react-dev-utils/globby.js

@@ -0,0 +1,12 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+var globby = require('globby');
+
+module.exports = globby;

packages/react-dev-utils/package.json

@@ -23,6 +23,7 @@
     "getCacheIdentifier.js",
     "getCSSModuleLocalIdent.js",
     "getProcessForPort.js",
+    "globby.js",
     "ignoredFiles.js",
     "immer.js",
     "InlineChunkHtmlPlugin.js",
@@ -53,6 +54,7 @@
     "filesize": "3.6.1",
     "find-up": "3.0.0",
     "global-modules": "1.0.0",
+    "globby": "8.0.1",
     "gzip-size": "5.0.0",
     "immer": "1.7.2",
     "inquirer": "6.2.0",