From 7e1a409c6ed090b38a8aaa00a4f968558cda8d6d Mon Sep 17 00:00:00 2001
From: Tim Swalling <tim@timswalling.com>
Date: Wed, 13 Sep 2017 15:35:42 +0100
Subject: [PATCH] Update Jest config so `.js` and `.jsx` are transformed
 correctly

We need to make sure that any ES6+ features that aren't supported
by Jest/Node are transpiled, and that `fileTransform.js` isn't
run on any files that it shouldn't.
---
 packages/react-scripts/scripts/utils/createJestConfig.js | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/packages/react-scripts/scripts/utils/createJestConfig.js b/packages/react-scripts/scripts/utils/createJestConfig.js
index 559f96f45..93712a831 100644
--- a/packages/react-scripts/scripts/utils/createJestConfig.js
+++ b/packages/react-scripts/scripts/utils/createJestConfig.js
@@ -45,9 +45,11 @@ module.exports = (resolve, rootDir) => {
     testEnvironment: 'node',
     testURL: 'http://localhost',
     transform: {
+      '^.+\\.(js|jsx|ts|tsx)$': resolve('config/jest/typescriptTransform.js'),
       '^.+\\.css$': resolve('config/jest/cssTransform.js'),
-      '^.+\\.tsx?$': resolve('config/jest/typescriptTransform.js'),
-      '^(?!.*\\.(css|json)$)': resolve('config/jest/fileTransform.js'),
+      '^(?!.*\\.(js|jsx|ts|tsx|css|json)$)': resolve(
+        'config/jest/fileTransform.js'
+      ),
     },
     transformIgnorePatterns: [
       '[/\\\\]node_modules[/\\\\].+\\.(js|jsx|ts|tsx)$',
@@ -59,7 +61,7 @@ module.exports = (resolve, rootDir) => {
       'ts-jest': {
         tsConfigFile: paths.appTsTestConfig,
       },
-    }
+    },
   };
   if (rootDir) {
     config.rootDir = rootDir;