watchman crawler now includes dotfiles

CHANGELOG.md

@@ -79,6 +79,7 @@
 - `[jest-haste-map]` Stop reporting files as changed when they are only accessed ([#7347](https://github.com/facebook/jest/pull/7347))
 - `[jest-resolve]` Show relative path from root dir for `module not found` errors ([#9963](https://github.com/facebook/jest/pull/9963))
 - `[jest-runtime]` Fix absolute path moduleNameMapper + jest.mock bug ([#8727](https://github.com/facebook/jest/pull/8727))
+- `[jest-haste-map]` Watchman crawler now includes dotfiles ([#10075](https://github.com/facebook/jest/pull/10075))
 
 ### Chore & Maintenance
 

jest.config.js

@@ -49,6 +49,7 @@ module.exports = {
     '/packages/jest-cli/src/init/__tests__/fixtures/',
     '/packages/jest-haste-map/src/__tests__/haste_impl.js',
     '/packages/jest-haste-map/src/__tests__/dependencyExtractor.js',
+    '/packages/jest-haste-map/src/__tests__/test_dotfiles_root',
     '/packages/jest-resolve-dependencies/src/__tests__/__fixtures__/',
     '/packages/jest-runtime/src/__tests__/defaultResolver.js',
     '/packages/jest-runtime/src/__tests__/module_dir/',

packages/jest-haste-map/src/__tests__/includes_dotfiles.test.ts

@@ -0,0 +1,48 @@
+/**
+ * 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.
+ */
+
+import path from 'path';
+import HasteMap from '../index';
+
+const rootDir = path.join(__dirname, './test_dotfiles_root');
+
+const commonOptions = {
+  extensions: ['js'],
+  maxWorkers: 1,
+  platforms: [],
+  resetCache: true,
+  retainAllFiles: true,
+  rootDir,
+  roots: [rootDir],
+};
+
+test('watchman crawler and node crawler both include dotfiles', async () => {
+  const hasteMapWithWatchman = new HasteMap({
+    ...commonOptions,
+    name: 'withWatchman',
+    useWatchman: true,
+  });
+
+  const hasteMapWithNode = new HasteMap({
+    ...commonOptions,
+    name: 'withNode',
+    useWatchman: false,
+  });
+
+  const [builtHasteMapWithWatchman, builtHasteMapWithNode] = await Promise.all([
+    hasteMapWithWatchman.build(),
+    hasteMapWithNode.build(),
+  ]);
+
+  expect(
+    builtHasteMapWithWatchman.hasteFS.matchFiles('.eslintrc.js'),
+  ).toHaveLength(1);
+
+  expect(builtHasteMapWithWatchman.hasteFS.getAllFiles().sort()).toEqual(
+    builtHasteMapWithNode.hasteFS.getAllFiles().sort(),
+  );
+});

packages/jest-haste-map/src/__tests__/test_dotfiles_root/.eslintrc.js

@@ -0,0 +1,6 @@
+/**
+ * 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.
+ */

packages/jest-haste-map/src/__tests__/test_dotfiles_root/index.js

@@ -0,0 +1,6 @@
+/**
+ * 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.
+ */

packages/jest-haste-map/src/crawlers/watchman.ts

@@ -126,7 +126,7 @@ export = async function watchmanCrawl(
             ? // Use the `since` generator if we have a clock available
               {expression, fields, since: clocks.get(relativeRoot)}
             : // Otherwise use the `glob` filter
-              {expression, fields, glob};
+              {expression, fields, glob, glob_includedotfiles: true};
 
           const response = await cmd('query', root, query);