Added the abillity to import js and jsx files with ts-loader

package.json

@@ -10,7 +10,7 @@
     "publish": "tasks/release.sh",
     "start": "node packages/react-scripts/scripts/start.js",
     "test": "node packages/react-scripts/scripts/test.js --env=jsdom",
-    "format": "prettier --trailing-comma es5 --single-quote --write 'packages/*/*.js' 'packages/*/!(node_modules)/**/*.js'",
+    "format": "prettier --trailing-comma es5 --single-quote --write \"packages/*/*.js\" \"packages/*/!(node_modules)/**/*.js\"",
     "precommit": "lint-staged"
   },
   "devDependencies": {

packages/react-scripts/config/jest/babelTransform.js

@@ -0,0 +1,15 @@
+// @remove-file-on-eject
+/**
+ * Copyright (c) 2014-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';
+
+const babelJest = require('babel-jest');
+
+module.exports = babelJest.createTransformer({
+  presets: [require.resolve('babel-preset-react-app')],
+  babelrc: false,
+});

packages/react-scripts/config/webpack.config.dev.js

@@ -124,7 +124,7 @@ module.exports = {
       // please link the files into your node_modules/ and let module-resolution kick in.
       // Make sure your source files are compiled, as they will not be processed in any way.
       new ModuleScopePlugin(paths.appSrc, [paths.appPackageJson]),
-      new TsconfigPathsPlugin({configFile: paths.appTsConfig})
+      new TsconfigPathsPlugin({ configFile: paths.appTsConfig }),
     ],
   },
   module: {
@@ -156,6 +156,19 @@ module.exports = {
               name: 'static/media/[name].[hash:8].[ext]',
             },
           },
+          {
+            test: /\.(js|jsx|mjs)$/,
+            include: paths.appSrc,
+            loader: require.resolve('babel-loader'),
+            options: {
+              // @remove-on-eject-begin
+              babelrc: false,
+              presets: [require.resolve('babel-preset-react-app')],
+              // @remove-on-eject-end
+              compact: true,
+            },
+          },
+
           // Compile .tsx?
           {
             test: /\.(ts|tsx)$/,

packages/react-scripts/config/webpack.config.prod.js

@@ -130,7 +130,7 @@ module.exports = {
       // please link the files into your node_modules/ and let module-resolution kick in.
       // Make sure your source files are compiled, as they will not be processed in any way.
       new ModuleScopePlugin(paths.appSrc, [paths.appPackageJson]),
-      new TsconfigPathsPlugin({configFile: paths.appTsConfig})
+      new TsconfigPathsPlugin({ configFile: paths.appTsConfig }),
     ],
   },
   module: {
@@ -160,6 +160,18 @@ module.exports = {
               name: 'static/media/[name].[hash:8].[ext]',
             },
           },
+          {
+            test: /\.(js|jsx|mjs)$/,
+            include: paths.appSrc,
+            loader: require.resolve('babel-loader'),
+            options: {
+              // @remove-on-eject-begin
+              babelrc: false,
+              presets: [require.resolve('babel-preset-react-app')],
+              // @remove-on-eject-end
+              compact: true,
+            },
+          },
           // Compile .tsx?
           {
             test: /\.(ts|tsx)$/,

packages/react-scripts/package.json

@@ -22,6 +22,9 @@
   },
   "dependencies": {
     "autoprefixer": "7.1.6",
+    "babel-jest": "^22.1.0",
+    "babel-loader": "^7.1.2",
+    "babel-preset-react-app": "^3.1.1",
     "case-sensitive-paths-webpack-plugin": "2.1.1",
     "chalk": "1.1.3",
     "css-loader": "0.28.7",
@@ -31,7 +34,7 @@
     "fork-ts-checker-webpack-plugin": "^0.2.8",
     "fs-extra": "3.0.1",
     "html-webpack-plugin": "2.29.0",
-    "jest": "20.0.4",
+    "jest": "22.1.4",
     "object-assign": "4.1.1",
     "postcss-flexbugs-fixes": "3.2.0",
     "postcss-loader": "2.0.8",
@@ -41,7 +44,7 @@
     "source-map-loader": "^0.2.1",
     "style-loader": "0.19.0",
     "sw-precache-webpack-plugin": "0.11.4",
-    "ts-jest": "^20.0.7",
+    "ts-jest": "22.0.1",
     "ts-loader": "^2.3.7",
     "tsconfig-paths-webpack-plugin": "^2.0.0",
     "tslint": "^5.7.0",
@@ -54,7 +57,8 @@
   },
   "devDependencies": {
     "react": "^15.5.4",
-    "react-dom": "^15.5.4"
+    "react-dom": "^15.5.4",
+    "typescript": "^2.7.1"
   },
   "peerDependencies": {
     "typescript": "2.x"

packages/react-scripts/scripts/utils/createJestConfig.js

@@ -11,7 +11,7 @@ const fs = require('fs');
 const chalk = require('chalk');
 const paths = require('../../config/paths');
 
-module.exports = (resolve, rootDir) => {
+module.exports = (resolve, rootDir, isEjecting) => {
   // Use this instead of `paths.testsSetup` to avoid putting
   // an absolute filename into configuration after ejecting.
   const setupTestsFile = fs.existsSync(paths.testsSetup)
@@ -25,20 +25,23 @@ module.exports = (resolve, rootDir) => {
     setupFiles: [resolve('config/polyfills.js')],
     setupTestFrameworkScriptFile: setupTestsFile,
     testMatch: [
-      '<rootDir>/src/**/__tests__/**/*.ts?(x)',
-      '<rootDir>/src/**/?(*.)(spec|test).ts?(x)',
+      '<rootDir>/src/**/__tests__/**/*.(j|t)s?(x)',
+      '<rootDir>/src/**/?(*.)(spec|test).(j|t)s?(x)',
     ],
     testEnvironment: 'node',
     testURL: 'http://localhost',
     transform: {
+      '^.+\\.(js|jsx|mjs)$': isEjecting
+        ? '<rootDir>/node_modules/babel-jest'
+        : resolve('config/jest/babelTransform.js'),
       '^.+\\.tsx?$': resolve('config/jest/typescriptTransform.js'),
       '^.+\\.css$': resolve('config/jest/cssTransform.js'),
       '^(?!.*\\.(js|jsx|mjs|css|json)$)': resolve(
         'config/jest/fileTransform.js'
       ),
     },
     transformIgnorePatterns: [
-      '[/\\\\]node_modules[/\\\\].+\\.(js|jsx|mjs|ts|tsx)$'
+      '[/\\\\]node_modules[/\\\\].+\\.(js|jsx|mjs|ts|tsx)$',
     ],
     moduleNameMapper: {
       '^react-native$': 'react-native-web',