From b0cbcbf3f813db9a66a5bfbe822e15d59d157064 Mon Sep 17 00:00:00 2001
From: Simen Bekkhus <sbekkhus91@gmail.com>
Date: Thu, 7 Mar 2019 22:43:59 +0100
Subject: [PATCH] export functions compatible with `import jest from 'jest'`
 (#8081)

---
 CHANGELOG.md                              |  2 ++
 e2e/__tests__/runProgrammatically.test.ts |  7 ++++++-
 e2e/run-programmatically/babel.config.js  |  5 +++++
 e2e/run-programmatically/cjs.js           | 12 ++++++++++++
 e2e/run-programmatically/esm.js           | 14 ++++++++++++++
 e2e/run-programmatically/index.js         |  6 +++---
 packages/jest-cli/src/index.ts            | 17 +++++++++++++----
 7 files changed, 55 insertions(+), 8 deletions(-)
 create mode 100644 e2e/run-programmatically/babel.config.js
 create mode 100644 e2e/run-programmatically/cjs.js
 create mode 100644 e2e/run-programmatically/esm.js

diff --git a/CHANGELOG.md b/CHANGELOG.md
index d054e84fa592..c7cd933dd99a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,8 @@
 
 ### Fixes
 
+- `[jest-cli]` export functions compatible with `import {default}` ([#8080](https://github.com/facebook/jest/pull/8080))
+
 ### Chore & Maintenance
 
 - `[pretty-format]`: Use `react-is` instead of manual `$$typeof` checks ([#8060](https://github.com/facebook/jest/pull/8060))
diff --git a/e2e/__tests__/runProgrammatically.test.ts b/e2e/__tests__/runProgrammatically.test.ts
index d6eecf7eac09..e9c1a8641e78 100644
--- a/e2e/__tests__/runProgrammatically.test.ts
+++ b/e2e/__tests__/runProgrammatically.test.ts
@@ -11,7 +11,12 @@ import {run} from '../Utils';
 
 const dir = resolve(__dirname, '..', 'run-programmatically');
 
-test('run Jest programatically', () => {
+test('run Jest programmatically cjs', () => {
+  const {stdout} = run(`node cjs.js --version`, dir);
+  expect(stdout).toMatch(/\d{2}\.\d{1,2}\.\d{1,2}[\-\S]*-dev$/);
+});
+
+test('run Jest programmatically esm', () => {
   const {stdout} = run(`node index.js --version`, dir);
   expect(stdout).toMatch(/\d{2}\.\d{1,2}\.\d{1,2}[\-\S]*-dev$/);
 });
diff --git a/e2e/run-programmatically/babel.config.js b/e2e/run-programmatically/babel.config.js
new file mode 100644
index 000000000000..60a2a5c5a434
--- /dev/null
+++ b/e2e/run-programmatically/babel.config.js
@@ -0,0 +1,5 @@
+// Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+
+module.exports = {
+  presets: ['@babel/preset-env'],
+};
diff --git a/e2e/run-programmatically/cjs.js b/e2e/run-programmatically/cjs.js
new file mode 100644
index 000000000000..2366de690bc4
--- /dev/null
+++ b/e2e/run-programmatically/cjs.js
@@ -0,0 +1,12 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow
+ */
+
+// Running Jest like this is not officially supported,
+// but it is common practice until there is a proper API as a substitute.
+require('jest').run(process.argv);
diff --git a/e2e/run-programmatically/esm.js b/e2e/run-programmatically/esm.js
new file mode 100644
index 000000000000..f9120cd5599e
--- /dev/null
+++ b/e2e/run-programmatically/esm.js
@@ -0,0 +1,14 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow
+ */
+
+import myJestImport from 'jest';
+
+// Running Jest like this is not officially supported,
+// but it is common practice until there is a proper API as a substitute.
+myJestImport.run(process.argv);
diff --git a/e2e/run-programmatically/index.js b/e2e/run-programmatically/index.js
index a397521b7c74..b45fa0b0e585 100644
--- a/e2e/run-programmatically/index.js
+++ b/e2e/run-programmatically/index.js
@@ -8,6 +8,6 @@
  * @flow
  */
 
-// Running Jest like this is not officially supported,
-// but it is common practice until there is a proper API as a substitute.
-require('jest').run(process.argv);
+require('@babel/register');
+
+require('./esm');
diff --git a/packages/jest-cli/src/index.ts b/packages/jest-cli/src/index.ts
index 956d00196105..38dcb1c26fb1 100644
--- a/packages/jest-cli/src/index.ts
+++ b/packages/jest-cli/src/index.ts
@@ -5,7 +5,16 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-// TODO: remove exports for the next major
-export {runCLI, SearchSource, TestScheduler, TestWatcher} from '@jest/core';
-export {run} from './cli';
-export {default as getVersion} from './version';
+// TODO: remove @jest/core exports for the next major
+import {runCLI, SearchSource, TestScheduler, TestWatcher} from '@jest/core';
+import {run} from './cli';
+import {default as getVersion} from './version';
+
+export = {
+  SearchSource,
+  TestScheduler,
+  TestWatcher,
+  getVersion,
+  run,
+  runCLI,
+};