From 51d008c080e66a3a1de80d96eb07df6d50932d71 Mon Sep 17 00:00:00 2001
From: Bradford Lemley <bradfordlemley@gmail.com>
Date: Sun, 3 Feb 2019 11:03:28 -0700
Subject: [PATCH] Configure babel cwd to be project rootDir

---
 babel.config.js                                  |  1 -
 e2e/global-setup/projects.jest.config.js         |  6 ++++++
 e2e/global-setup/transform.js                    |  8 ++++++++
 e2e/multi-project-babel/bar/.babelrc.js          |  1 +
 e2e/multi-project-babel/bar/bar.js               |  1 +
 e2e/multi-project-babel/foo/.babelrc.js          |  1 +
 e2e/multi-project-babel/foo/foo.js               |  1 +
 packages/babel-jest/src/index.js                 |  6 ++++--
 .../src/__tests__/test_root/.babelrc.js          | 16 ++++++++++++++++
 9 files changed, 38 insertions(+), 3 deletions(-)
 create mode 100644 e2e/global-setup/transform.js
 create mode 100644 packages/jest-runtime/src/__tests__/test_root/.babelrc.js

diff --git a/babel.config.js b/babel.config.js
index cc4688972601..16388b188c62 100644
--- a/babel.config.js
+++ b/babel.config.js
@@ -1,7 +1,6 @@
 // Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
 
 module.exports = {
-  babelrcRoots: ['examples/*'],
   plugins: [
     ['@babel/plugin-transform-modules-commonjs', {allowTopLevelThis: true}],
     '@babel/plugin-transform-strict-mode',
diff --git a/e2e/global-setup/projects.jest.config.js b/e2e/global-setup/projects.jest.config.js
index 9d008ac5cd06..1450d744a29d 100644
--- a/e2e/global-setup/projects.jest.config.js
+++ b/e2e/global-setup/projects.jest.config.js
@@ -15,6 +15,9 @@ module.exports = {
       globalSetup: '<rootDir>/setup.js',
       rootDir: path.resolve(__dirname, './project-1'),
       testMatch: ['<rootDir>/**/*.test.js'],
+      transform: {
+        '\\.js$': require.resolve('./transform'),
+      },
       transformIgnorePatterns: ['/node_modules/', '/packages/'],
     },
     {
@@ -22,6 +25,9 @@ module.exports = {
       globalSetup: '<rootDir>/setup.js',
       rootDir: path.resolve(__dirname, './project-2'),
       testMatch: ['<rootDir>/**/*.test.js'],
+      transform: {
+        '\\.js$': require.resolve('./transform'),
+      },
       transformIgnorePatterns: ['/node_modules/', '/packages/'],
     },
   ],
diff --git a/e2e/global-setup/transform.js b/e2e/global-setup/transform.js
new file mode 100644
index 000000000000..67dc5b37708d
--- /dev/null
+++ b/e2e/global-setup/transform.js
@@ -0,0 +1,8 @@
+// Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+const babelJest = require('babel-jest');
+
+/* use higher-level babel.config.js */
+
+module.exports = babelJest.createTransformer({
+  rootMode: 'upward',
+});
diff --git a/e2e/multi-project-babel/bar/.babelrc.js b/e2e/multi-project-babel/bar/.babelrc.js
index 6869642766b4..eef9b61187fb 100644
--- a/e2e/multi-project-babel/bar/.babelrc.js
+++ b/e2e/multi-project-babel/bar/.babelrc.js
@@ -1,3 +1,4 @@
+// Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
 module.exports = {
   presets: ['@babel/preset-flow'],
 };
diff --git a/e2e/multi-project-babel/bar/bar.js b/e2e/multi-project-babel/bar/bar.js
index 851a12a0a77c..7e9de98e4811 100644
--- a/e2e/multi-project-babel/bar/bar.js
+++ b/e2e/multi-project-babel/bar/bar.js
@@ -1 +1,2 @@
+// Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
 module.exports = (text: string) => text;
diff --git a/e2e/multi-project-babel/foo/.babelrc.js b/e2e/multi-project-babel/foo/.babelrc.js
index 6869642766b4..eef9b61187fb 100644
--- a/e2e/multi-project-babel/foo/.babelrc.js
+++ b/e2e/multi-project-babel/foo/.babelrc.js
@@ -1,3 +1,4 @@
+// Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
 module.exports = {
   presets: ['@babel/preset-flow'],
 };
diff --git a/e2e/multi-project-babel/foo/foo.js b/e2e/multi-project-babel/foo/foo.js
index 851a12a0a77c..7e9de98e4811 100644
--- a/e2e/multi-project-babel/foo/foo.js
+++ b/e2e/multi-project-babel/foo/foo.js
@@ -1 +1,2 @@
+// Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
 module.exports = (text: string) => text;
diff --git a/packages/babel-jest/src/index.js b/packages/babel-jest/src/index.js
index bae5553dbe6c..9065741cca07 100644
--- a/packages/babel-jest/src/index.js
+++ b/packages/babel-jest/src/index.js
@@ -52,7 +52,7 @@ const createTransformer = (options: any): Transformer => {
       configString: string,
       {config, instrument, rootDir}: {config: ProjectConfig} & CacheKeyOptions,
     ): string {
-      const babelOptions = loadBabelConfig(config.cwd, filename);
+      const babelOptions = loadBabelConfig(config.rootDir, filename);
       const configPath = [
         babelOptions.config || '',
         babelOptions.babelrc || '',
@@ -85,7 +85,9 @@ const createTransformer = (options: any): Transformer => {
       config: ProjectConfig,
       transformOptions?: TransformOptions,
     ): string | TransformedSource {
-      const babelOptions = {...loadBabelConfig(config.cwd, filename).options};
+      const babelOptions = {
+        ...loadBabelConfig(config.rootDir, filename).options,
+      };
 
       if (transformOptions && transformOptions.instrument) {
         babelOptions.auxiliaryCommentBefore = ' istanbul ignore next ';
diff --git a/packages/jest-runtime/src/__tests__/test_root/.babelrc.js b/packages/jest-runtime/src/__tests__/test_root/.babelrc.js
new file mode 100644
index 000000000000..995e9041c1f7
--- /dev/null
+++ b/packages/jest-runtime/src/__tests__/test_root/.babelrc.js
@@ -0,0 +1,16 @@
+module.exports = {
+  plugins: [
+    ['@babel/plugin-transform-modules-commonjs', {allowTopLevelThis: true}],
+    '@babel/plugin-transform-strict-mode',
+  ],
+  presets: [
+    [
+      '@babel/preset-env',
+      {
+        shippedProposals: true,
+        targets: {node: 6},
+      },
+    ],
+    '@babel/preset-flow',
+  ],
+};