fix regex

Author: xjlim

packages/react-dev-utils/watchOptionsRegex.js renamed to packages/react-dev-utils/ignoredFiles.js

@@ -8,11 +8,12 @@
 'use strict';
 
 const path = require('path');
-const escapeStringRegexp = require('escape-string-regexp');
 
-module.exports = function watchOptionsRegex(paths) {
+module.exports = function ignoredFiles(appSrc) {
   return new RegExp(
-    `^(?!${escapeStringRegexp(path.join(paths.appSrc, '/'))}).+node_modules`,
+    `^(?!${path
+      .normalize(appSrc + '/')
+      .replace(/[\\]+/g, '/')}).+/node_modules/`,
     'g'
   );
 };

packages/react-scripts/config/webpackDevServer.config.js

@@ -10,7 +10,7 @@
 
 const errorOverlayMiddleware = require('react-dev-utils/errorOverlayMiddleware');
 const noopServiceWorkerMiddleware = require('react-dev-utils/noopServiceWorkerMiddleware');
-const watchOptionsRegex = require('react-dev-utils/watchOptionsRegex');
+const ignoredFiles = require('react-dev-utils/ignoredFiles');
 const config = require('./webpack.config.dev');
 const paths = require('./paths');
 
@@ -76,7 +76,7 @@ module.exports = function(proxy, allowedHost) {
     // src/node_modules is not ignored to support absolute imports
     // https://github.com/facebookincubator/create-react-app/issues/1065
     watchOptions: {
-      ignored: watchOptionsRegex(paths),
+      ignored: ignoredFiles(paths.appSrc),
     },
     // Enable HTTPS if the HTTPS environment variable is set to 'true'
     https: protocol === 'https',