Update node_modules_path to resolve symlinks to real paths (#5085)

* Update node_modules_path to follow symlinks * Update whitespace to make prettier happy * Update CHANGELOG.md * Update CHANGELOG.md * Update node_modules_paths.js * Code Review feedback * Use `realpath()` in `jest-util` * Fix a lint error * Add missing dependency in jest-resolve * Fix import statement * Fix a lint warning * Fix lint issues caused by editor * Add test * passing tests * Make lint happy * Make lint happy * Make lint happy * AppVeyor should keep symlinks * Update appveyor.yml * Fix imports * fixed the rel/abs path test suite that was failing with realpath * Update CHANGELOG.md * Update package.json
jestjs · Feb 23, 2018 · a6aa304 · a6aa304
1 parent 83a51cc
commit a6aa304
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,5 +1,10 @@
 ## master
 
+### Fixes
+
+* `[jest-resolve]` Update node module resolution algorithm to correctly handle
+ symlinked paths ([#5085](https://github.com/facebook/jest/pull/5085))
+
 ## 22.4.2
 
 ### Fixes

diff --git a/appveyor.yml b/appveyor.yml
@@ -6,6 +6,7 @@ init:
  # debugging Appveyor build. More info:
  # https://www.appveyor.com/docs/how-to/rdp-to-build-worker/
  - ps: iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))
+ - git config --global core.symlinks true
 
 install:
  - ps: Install-Product node $env:nodejs_version x64

diff --git a/packages/jest-resolve/package.json b/packages/jest-resolve/package.json
@@ -9,7 +9,8 @@
  "main": "build/index.js",
  "dependencies": {
  "browser-resolve": "^1.11.2",
- "chalk": "^2.0.1"
+ "chalk": "^2.0.1",
+ "realpath-native": "^1.0.0"
  },
  "devDependencies": {
  "jest-haste-map": "^22.4.2"

diff --git a/packages/jest-resolve/src/__mocks__/bar/node_modules/bar/index.js b/packages/jest-resolve/src/__mocks__/bar/node_modules/bar/index.js
diff --git a/packages/jest-resolve/src/__mocks__/bar/node_modules/foo b/packages/jest-resolve/src/__mocks__/bar/node_modules/foo
diff --git a/packages/jest-resolve/src/__mocks__/foo/node_modules/dep/index.js b/packages/jest-resolve/src/__mocks__/foo/node_modules/dep/index.js
diff --git a/packages/jest-resolve/src/__mocks__/foo/node_modules/foo/index.js b/packages/jest-resolve/src/__mocks__/foo/node_modules/foo/index.js
diff --git a/packages/jest-resolve/src/__tests__/resolve.test.js b/packages/jest-resolve/src/__tests__/resolve.test.js
@@ -129,6 +129,19 @@ describe('resolveModule', () => {
  require.resolve('../__mocks__/mockJsxDependency.native.jsx'),
  );
  });
+
+ it('is possible to resolve node modules by resolving their realpath', () => {
+ const resolver = new Resolver(moduleMap, {
+ extensions: ['.js'],
+ });
+ const src = require.resolve(
+ '../../src/__mocks__/bar/node_modules/foo/index.js',
+ );
+ const resolved = resolver.resolveModule(src, 'dep');
+ expect(resolved).toBe(
+ require.resolve('../../src/__mocks__/foo/node_modules/dep/index.js'),
+ );
+ });
 });
 
 describe('getMockModule', () => {
@@ -203,6 +216,16 @@ describe('Resolver.getModulePaths() -> nodeModulesPaths()', () => {
  map: [],
  mocks: [],
  });
+
+ // Mocking realpath to function the old way, where it just looks at
+ // pathstrings instead of actually trying to access the physical directory.
+ // This test suite won't work otherwise, since we cannot make assumptions
+ // about the test environment when it comes to absolute paths.
+ jest.doMock('realpath-native', () => {
+ return {
+ sync: dirInput => dirInput,
+ };
+ });
  });
 
  afterAll(() => {

diff --git a/packages/jest-resolve/src/node_modules_paths.js b/packages/jest-resolve/src/node_modules_paths.js
@@ -11,6 +11,7 @@
 
 import type {Path} from 'types/Config';
 import path from 'path';
+import {sync as realpath} from 'realpath-native';
 
 type NodeModulesPathsOptions = {|
  moduleDirectory?: Array<string>,
@@ -37,11 +38,17 @@ export default function nodeModulesPaths(
  prefix = '\\\\';
  }
 
- const paths = [basedirAbs];
- let parsed = path.parse(basedirAbs);
+ // The node resolution algorithm (as implemented by NodeJS
+ // and TypeScript) traverses parents of the physical path,
+ // not the symlinked path
+ const physicalBasedir = realpath(basedirAbs);
+
+ const paths = [physicalBasedir];
+ let parsed = path.parse(physicalBasedir);
  while (parsed.dir !== paths[paths.length - 1]) {
- paths.push(parsed.dir);
- parsed = path.parse(parsed.dir);
+ const realParsedDir = realpath(parsed.dir);
+ paths.push(realParsedDir);
+ parsed = path.parse(realParsedDir);
  }
 
  const dirs = paths

diff --git a/yarn.lock b/yarn.lock
@@ -4534,6 +4534,10 @@ jest-docblock@^21, jest-docblock@^21.0.0, jest-docblock@^21.2.0:
  version "21.2.0"
  resolved "https://registry.yarnpkg.com/jest-docblock/-/jest-docblock-21.2.0.tgz#51529c3b30d5fd159da60c27ceedc195faf8d414"
 
+jest-get-type@^21.2.0:
+ version "21.2.0"
+ resolved "https://onedrive.pkgs.visualstudio.com/_packaging/odsp-npm/npm/registry/jest-get-type/-/jest-get-type-21.2.0.tgz#f6376ab9db4b60d81e39f30749c6c466f40d4a23"
+
 jest-haste-map@^21:
  version "21.2.0"
  resolved "https://registry.yarnpkg.com/jest-haste-map/-/jest-haste-map-21.2.0.tgz#1363f0a8bb4338f24f001806571eff7a4b2ff3d8"
@@ -4545,6 +4549,39 @@ jest-haste-map@^21:
  sane "^2.0.0"
  worker-farm "^1.3.1"
 
+jest-message-util@^21.2.1:
+ version "21.2.1"
+ resolved "https://onedrive.pkgs.visualstudio.com/_packaging/odsp-npm/npm/registry/jest-message-util/-/jest-message-util-21.2.1.tgz#bfe5d4692c84c827d1dcf41823795558f0a1acbe"
+ dependencies:
+ chalk "^2.0.1"
+ micromatch "^2.3.11"
+ slash "^1.0.0"
+
+jest-mock@^21.2.0:
+ version "21.2.0"
+ resolved "https://onedrive.pkgs.visualstudio.com/_packaging/odsp-npm/npm/registry/jest-mock/-/jest-mock-21.2.0.tgz#7eb0770e7317968165f61ea2a7281131534b3c0f"
+
+jest-util@^21.2.1:
+ version "21.2.1"
+ resolved "https://onedrive.pkgs.visualstudio.com/_packaging/odsp-npm/npm/registry/jest-util/-/jest-util-21.2.1.tgz#a274b2f726b0897494d694a6c3d6a61ab819bb78"
+ dependencies:
+ callsites "^2.0.0"
+ chalk "^2.0.1"
+ graceful-fs "^4.1.11"
+ jest-message-util "^21.2.1"
+ jest-mock "^21.2.0"
+ jest-validate "^21.2.1"
+ mkdirp "^0.5.1"
+
+jest-validate@^21.2.1:
+ version "21.2.1"
+ resolved "https://onedrive.pkgs.visualstudio.com/_packaging/odsp-npm/npm/registry/jest-validate/-/jest-validate-21.2.1.tgz#cc0cbca653cd54937ba4f2a111796774530dd3c7"
+ dependencies:
+ chalk "^2.0.1"
+ jest-get-type "^21.2.0"
+ leven "^2.1.0"
+ pretty-format "^21.2.1"
+
 jquery@^3.2.1:
  version "3.2.1"
  resolved "https://registry.yarnpkg.com/jquery/-/jquery-3.2.1.tgz#5c4d9de652af6cd0a770154a631bba12b015c787"
@@ -6200,6 +6237,13 @@ prettier@^1.10.1:
  version "1.10.1"
  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.10.1.tgz#01423fea6957ea23618d37d339ef0e7f7c967fc6"
 
+pretty-format@^21.2.1:
+ version "21.2.1"
+ resolved "https://onedrive.pkgs.visualstudio.com/_packaging/odsp-npm/npm/registry/pretty-format/-/pretty-format-21.2.1.tgz#ae5407f3cf21066cd011aa1ba5fce7b6a2eddb36"
+ dependencies:
+ ansi-regex "^3.0.0"
+ ansi-styles "^3.2.0"
+
 pretty-format@^4.2.1:
  version "4.3.1"
  resolved "https://registry.yarnpkg.com/pretty-format/-/pretty-format-4.3.1.tgz#530be5c42b3c05b36414a7a2a4337aa80acd0e8d"