Removed default support for @providesModule

Author: rubennorte

CHANGELOG.md

@@ -8,6 +8,7 @@
 - `[jest-worker]` [**BREAKING**] Add functionality to call a `setup` method in the worker before the first call and a `teardown` method when ending the farm ([#7014](https://github.com/facebook/jest/pull/7014)).
 - `[jest-config]` [**BREAKING**] Set default `notifyMode` to `failure-change` ([#7024](https://github.com/facebook/jest/pull/7024))
 - `[jest-snapshot]` Enable configurable snapshot paths ([#6143](https://github.com/facebook/jest/pull/6143))
+- `[jest-haste-map]` [**BREAKING**] Remove support for `@providesModule` ([#6104](https://github.com/facebook/jest/pull/6104))
 
 ### Fixes
 

e2e/__tests__/dependency_clash.test.js

@@ -59,11 +59,10 @@ test('fails with syntax error on flow types', () => {
       }
     `,
     '__tests__/test.js': `
-      const invariant = require('invariant');
+      const invariant = require('../invariant');
       test('haii', () => expect(invariant(false, 'haii')).toBe('haii'));
     `,
     'invariant.js': `/**
-      * @providesModule invariant
       * @flow
       */
       const invariant = (condition: boolean, message: string) => message;

e2e/__tests__/multi_project_runner.test.js

@@ -17,12 +17,7 @@ import {cleanup, extractSummary, writeFiles} from '../Utils';
 
 const DIR = path.resolve(os.tmpdir(), 'multi_project_runner_test');
 
-const fileContentWithProvidesModule = name => `/*
- * @providesModule ${name}
- */
-
-module.exports = {};
-`;
+const SAMPLE_FILE_CONTENT = 'module.exports = {};';
 
 beforeEach(() => cleanup(DIR));
 afterEach(() => cleanup(DIR));
@@ -55,29 +50,51 @@ test('--listTests doesnt duplicate the test files', () => {
 test('can pass projects or global config', () => {
   writeFiles(DIR, {
     '.watchmanconfig': '',
+    'base_config.js': `
+      module.exports = {
+        haste: {
+          hasteImplModulePath: '<rootDir>/hasteImpl.js',
+        },
+      };
+    `,
+    'hasteImpl.js': `
+      module.exports = {
+        getHasteName(path) {
+          return path
+            .substr(path.lastIndexOf('/') + 1)
+            .replace(/\.js$/, '');
+        },
+      };
+    `,
     'package.json': '{}',
     'project1/__tests__/file1.test.js': `
       const file1 = require('file1');
       test('file1', () => {});
     `,
-    'project1/file1.js': fileContentWithProvidesModule('file1'),
-    'project1/jest.config.js': `module.exports = {rootDir: './', displayName: 'BACKEND'}`,
+    'project1/file1.js': SAMPLE_FILE_CONTENT,
+    'project1/jest.config.js': `module.exports = {rootDir: './', displayName: 'BACKEND',         haste: {
+              hasteImplModulePath: '<rootDir>/../hasteImpl.js',
+            },}`,
     'project2/__tests__/file1.test.js': `
       const file1 = require('file1');
       test('file1', () => {});
     `,
-    'project2/file1.js': fileContentWithProvidesModule('file1'),
-    'project2/jest.config.js': `module.exports = {rootDir: './'}`,
+    'project2/file1.js': SAMPLE_FILE_CONTENT,
+    'project2/jest.config.js': `module.exports = {rootDir: './',         haste: {
+              hasteImplModulePath: '<rootDir>/../hasteImpl.js',
+            },}`,
     'project3/__tests__/file1.test.js': `
       const file1 = require('file1');
       test('file1', () => {});
     `,
-    'project3/file1.js': fileContentWithProvidesModule('file1'),
-    'project3/jest.config.js': `module.exports = {rootDir: './', displayName: 'UI'}`,
+    'project3/file1.js': SAMPLE_FILE_CONTENT,
+    'project3/jest.config.js': `module.exports = {rootDir: './', displayName: 'UI',         haste: {
+              hasteImplModulePath: '<rootDir>/../hasteImpl.js',
+            },}`,
   });
   let stderr;
 
-  ({stderr} = runJest(DIR, ['--no-watchman']));
+  ({stderr} = runJest(DIR, ['--no-watchman', '--config', 'base_config.js']));
   expect(stderr).toMatch(
     'The name `file1` was looked up in the Haste module map. It cannot be resolved, because there exists several different files',
   );
@@ -88,6 +105,9 @@ test('can pass projects or global config', () => {
     'global_config.js': `
       module.exports = {
         projects: ['project1/', 'project2/', 'project3/'],
+        haste: {
+          hasteImplModulePath: '<rootDir>/hasteImpl.js',
+        },
       };
     `,
   });
@@ -99,6 +119,8 @@ test('can pass projects or global config', () => {
     'project1',
     'project2',
     'project3',
+    '--config',
+    'base_config.js',
   ]));
 
   const result1 = extractSummary(stderr);
@@ -126,16 +148,16 @@ test('"No tests found" message for projects', () => {
     '.watchmanconfig': '',
     'package.json': '{}',
     'project1/__tests__/file1.test.js': `
-      const file1 = require('file1');
+      const file1 = require('../file1');
       test('file1', () => {});
     `,
-    'project1/file1.js': fileContentWithProvidesModule('file1'),
+    'project1/file1.js': SAMPLE_FILE_CONTENT,
     'project1/jest.config.js': `module.exports = {rootDir: './'}`,
     'project2/__tests__/file1.test.js': `
-      const file1 = require('file1');
+      const file1 = require('../file1');
       test('file1', () => {});
     `,
-    'project2/file1.js': fileContentWithProvidesModule('file1'),
+    'project2/file1.js': SAMPLE_FILE_CONTENT,
     'project2/jest.config.js': `module.exports = {rootDir: './'}`,
   });
   const {stdout: verboseOutput} = runJest(DIR, [
@@ -170,16 +192,16 @@ test('projects can be workspaces with non-JS/JSON files', () => {
     'packages/README.md': '# Packages README',
     'packages/project1/README.md': '# Project1 README',
     'packages/project1/__tests__/file1.test.js': `
-    const file1 = require('file1');
+    const file1 = require('../file1');
     test('file1', () => {});
     `,
-    'packages/project1/file1.js': fileContentWithProvidesModule('file1'),
+    'packages/project1/file1.js': SAMPLE_FILE_CONTENT,
     'packages/project1/package.json': '{}',
     'packages/project2/__tests__/file2.test.js': `
-    const file2 = require('file2');
+    const file2 = require('../file2');
     test('file2', () => {});
     `,
-    'packages/project2/file2.js': fileContentWithProvidesModule('file2'),
+    'packages/project2/file2.js': SAMPLE_FILE_CONTENT,
     'packages/project2/package.json': '{}',
   });
 

packages/jest-cli/src/__tests__/SearchSource.test.js

@@ -373,6 +373,18 @@ describe('SearchSource', () => {
     beforeEach(done => {
       const {options: config} = normalize(
         {
+          haste: {
+            hasteImplModulePath: path.join(
+              __dirname,
+              '..',
+              '..',
+              '..',
+              'jest-haste-map',
+              'src',
+              '__tests__',
+              'haste_impl.js',
+            ),
+          },
           name: 'SearchSource-findRelatedTests-tests',
           rootDir,
         },

packages/jest-haste-map/src/__tests__/__snapshots__/index.test.js.snap

@@ -3,25 +3,25 @@
 exports[`HasteMap file system changes processing recovery from duplicate module IDs recovers when the most recent duplicate is fixed 1`] = `
 "The name \`Pear\` was looked up in the Haste module map. It cannot be resolved, because there exists several different files, or packages, that provide a module for that particular name and platform. The platform is generic (no extension). You must delete or blacklist files until there remains only one of these:
 
-  * \`/project/fruits/blueberry.js\` (module)
-  * \`/project/fruits/pear.js\` (module)
+  * \`/project/fruits/Pear.js\` (module)
+  * \`/project/fruits/another/Pear.js\` (module)
 "
 `;
 
 exports[`HasteMap file system changes processing recovery from duplicate module IDs recovers when the oldest version of the duplicates is fixed 1`] = `
 "The name \`Pear\` was looked up in the Haste module map. It cannot be resolved, because there exists several different files, or packages, that provide a module for that particular name and platform. The platform is generic (no extension). You must delete or blacklist files until there remains only one of these:
 
-  * \`/project/fruits/blueberry.js\` (module)
-  * \`/project/fruits/pear.js\` (module)
+  * \`/project/fruits/Pear.js\` (module)
+  * \`/project/fruits/another/Pear.js\` (module)
 "
 `;
 
 exports[`HasteMap throws on duplicate module ids if "throwOnModuleCollision" is set to true 1`] = `
-[Error: jest-haste-map: @providesModule naming collision:
+[Error: jest-haste-map: Haste module naming collision:
   Duplicate module name: Strawberry
-  Paths: /project/fruits/raspberry.js collides with /project/fruits/strawberry.js
+  Paths: /project/fruits/another/Strawberry.js collides with /project/fruits/Strawberry.js
 
-This error is caused by a @providesModule declaration with the same name across two different files.]
+This error is caused by \`hasteImpl\` returning the same name for different files.]
 `;
 
 exports[`HasteMap tries to crawl using node as a fallback 1`] = `
@@ -32,22 +32,22 @@ exports[`HasteMap tries to crawl using node as a fallback 1`] = `
 
 exports[`HasteMap warns on duplicate mock files 1`] = `
 "jest-haste-map: duplicate manual mock found:
-  Module name: subdir/blueberry
-  Duplicate Mock path: /project/fruits2/__mocks__/subdir/blueberry.js
+  Module name: subdir/Blueberry
+  Duplicate Mock path: /project/fruits2/__mocks__/subdir/Blueberry.js
 This warning is caused by two manual mock files with the same file name.
 Jest will use the mock file found in: 
-/project/fruits2/__mocks__/subdir/blueberry.js
+/project/fruits2/__mocks__/subdir/Blueberry.js
  Please delete one of the following two files: 
- /project/fruits1/__mocks__/subdir/blueberry.js
-/project/fruits2/__mocks__/subdir/blueberry.js
+ /project/fruits1/__mocks__/subdir/Blueberry.js
+/project/fruits2/__mocks__/subdir/Blueberry.js
 
 "
 `;
 
 exports[`HasteMap warns on duplicate module ids 1`] = `
-"jest-haste-map: @providesModule naming collision:
+"jest-haste-map: Haste module naming collision:
   Duplicate module name: Strawberry
-  Paths: /project/fruits/raspberry.js collides with /project/fruits/strawberry.js
+  Paths: /project/fruits/other/Strawberry.js collides with /project/fruits/Strawberry.js
 
-This warning is caused by a @providesModule declaration with the same name across two different files."
+This warning is caused by \`hasteImpl\` returning the same name for different files."
 `;

packages/jest-haste-map/src/__tests__/haste_impl.js

@@ -8,6 +8,17 @@
 
 module.exports = {
   getHasteName(path) {
-    return path.substr(path.lastIndexOf('/') + 1).replace(/\.js$/, '');
+    if (
+      path.includes('__mocks__') ||
+      path.includes('NoHaste') ||
+      path.includes('/module_dir/') ||
+      path.includes('/sourcemaps/')
+    ) {
+      return undefined;
+    }
+
+    return path
+      .substr(path.lastIndexOf('/') + 1)
+      .replace(/(\.(android|ios|native))?\.js$/, '');
   },
 };