Alphabetize and clean files-array in react-dev-utils package.json (#4016)

Signed-off-by: petetnt <[email protected]>

Author: petetnt

Diff for: packages/react-dev-utils/package.json

@@ -14,12 +14,10 @@
     "browsersHelper.js",
     "checkRequiredFiles.js",
     "clearConsole.js",
-    "crashOverlay.js",
     "crossSpawn.js",
-    "eslintFormatter.js",
     "errorOverlayMiddleware.js",
+    "eslintFormatter.js",
     "FileSizeReporter.js",
-    "printBuildError.js",
     "formatWebpackMessages.js",
     "getProcessForPort.js",
     "ignoredFiles.js",
@@ -31,6 +29,7 @@
     "noopServiceWorkerMiddleware.js",
     "openBrowser.js",
     "openChrome.applescript",
+    "printBuildError.js",
     "printHostingInstructions.js",
     "WatchMissingNodeModulesPlugin.js",
     "WebpackDevServerUtils.js",