Set up comprehensive frontend testing infrastructure

- Install Jest for unit testing with React Testing Library
- Install Playwright for end-to-end testing
- Configure Jest with proper TypeScript support and module mapping
- Create test setup files and utilities for both unit and e2e tests

Components:
* Jest configuration with coverage thresholds
* Playwright configuration with browser automation
* Unit tests for LoginForm, AuthContext, and useSocketIO hook
* E2E tests for authentication, dashboard, and agents workflows
* GitHub Actions workflow for automated testing
* Mock data and API utilities for consistent testing
* Test documentation with best practices

Testing features:
- Unit tests with 70% coverage threshold
- E2E tests with API mocking and user journey testing
- CI/CD integration for automated test runs
- Cross-browser testing support with Playwright
- Authentication system testing end-to-end

🚀 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

frontend/node_modules/@jest/pattern/LICENSE

@@ -0,0 +1,22 @@
+MIT License
+
+Copyright (c) Meta Platforms, Inc. and affiliates.
+Copyright Contributors to the Jest project.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

frontend/node_modules/@jest/pattern/README.md

@@ -0,0 +1,3 @@
+# @jest/pattern
+
+`@jest/pattern` is a helper library for the jest library that implements the logic for parsing and matching patterns.

frontend/node_modules/@jest/pattern/api-extractor.json

@@ -0,0 +1,5 @@
+{
+  "extends": "../../api-extractor.json",
+  "mainEntryPointFilePath": "/Users/cpojer/Dropbox/Projects/jest/packages/jest-pattern/build/index.d.ts",
+  "projectFolder": "/Users/cpojer/Dropbox/Projects/jest/packages/jest-pattern"
+}

frontend/node_modules/@jest/pattern/build/index.d.ts

@@ -0,0 +1,65 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+export declare class TestPathPatterns {
+  readonly patterns: Array<string>;
+  constructor(patterns: Array<string>);
+  /**
+   * Return true if there are any patterns.
+   */
+  isSet(): boolean;
+  /**
+   * Return true if the patterns are valid.
+   */
+  isValid(): boolean;
+  /**
+   * Return a human-friendly version of the pattern regex.
+   */
+  toPretty(): string;
+  /**
+   * Return a TestPathPatternsExecutor that can execute the patterns.
+   */
+  toExecutor(
+    options: TestPathPatternsExecutorOptions,
+  ): TestPathPatternsExecutor;
+  /** For jest serializers */
+  toJSON(): any;
+}
+
+export declare class TestPathPatternsExecutor {
+  readonly patterns: TestPathPatterns;
+  private readonly options;
+  constructor(
+    patterns: TestPathPatterns,
+    options: TestPathPatternsExecutorOptions,
+  );
+  private toRegex;
+  /**
+   * Return true if there are any patterns.
+   */
+  isSet(): boolean;
+  /**
+   * Return true if the patterns are valid.
+   */
+  isValid(): boolean;
+  /**
+   * Return true if the given ABSOLUTE path matches the patterns.
+   *
+   * Throws an error if the patterns form an invalid regex (see `validate`).
+   */
+  isMatch(absPath: string): boolean;
+  /**
+   * Return a human-friendly version of the pattern regex.
+   */
+  toPretty(): string;
+}
+
+export declare type TestPathPatternsExecutorOptions = {
+  rootDir: string;
+};
+
+export {};

frontend/node_modules/@jest/pattern/build/index.js

@@ -0,0 +1,214 @@
+/*!
+ * /**
+ *  * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *  *
+ *  * This source code is licensed under the MIT license found in the
+ *  * LICENSE file in the root directory of this source tree.
+ *  * /
+ */
+/******/ (() => { // webpackBootstrap
+/******/ 	"use strict";
+/******/ 	var __webpack_modules__ = ({
+
+/***/ "./src/TestPathPatterns.ts":
+/***/ ((__unused_webpack_module, exports) => {
+
+
+
+Object.defineProperty(exports, "__esModule", ({
+  value: true
+}));
+exports.TestPathPatternsExecutor = exports.TestPathPatterns = void 0;
+function path() {
+  const data = _interopRequireWildcard(require("path"));
+  path = function () {
+    return data;
+  };
+  return data;
+}
+function _jestRegexUtil() {
+  const data = require("jest-regex-util");
+  _jestRegexUtil = function () {
+    return data;
+  };
+  return data;
+}
+function _interopRequireWildcard(e, t) { if ("function" == typeof WeakMap) var r = new WeakMap(), n = new WeakMap(); return (_interopRequireWildcard = function (e, t) { if (!t && e && e.__esModule) return e; var o, i, f = { __proto__: null, default: e }; if (null === e || "object" != typeof e && "function" != typeof e) return f; if (o = t ? n : r) { if (o.has(e)) return o.get(e); o.set(e, f); } for (const t in e) "default" !== t && {}.hasOwnProperty.call(e, t) && ((i = (o = Object.defineProperty) && Object.getOwnPropertyDescriptor(e, t)) && (i.get || i.set) ? o(f, t, i) : f[t] = e[t]); return f; })(e, t); }
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+class TestPathPatterns {
+  constructor(patterns) {
+    this.patterns = patterns;
+  }
+
+  /**
+   * Return true if there are any patterns.
+   */
+  isSet() {
+    return this.patterns.length > 0;
+  }
+
+  /**
+   * Return true if the patterns are valid.
+   */
+  isValid() {
+    return this.toExecutor({
+      // isValid() doesn't require rootDir to be accurate, so just
+      // specify a dummy rootDir here
+      rootDir: '/'
+    }).isValid();
+  }
+
+  /**
+   * Return a human-friendly version of the pattern regex.
+   */
+  toPretty() {
+    return this.patterns.join('|');
+  }
+
+  /**
+   * Return a TestPathPatternsExecutor that can execute the patterns.
+   */
+  toExecutor(options) {
+    return new TestPathPatternsExecutor(this, options);
+  }
+
+  /** For jest serializers */
+  toJSON() {
+    return {
+      patterns: this.patterns,
+      type: 'TestPathPatterns'
+    };
+  }
+}
+exports.TestPathPatterns = TestPathPatterns;
+class TestPathPatternsExecutor {
+  constructor(patterns, options) {
+    this.patterns = patterns;
+    this.options = options;
+  }
+  toRegex(s) {
+    return new RegExp(s, 'i');
+  }
+
+  /**
+   * Return true if there are any patterns.
+   */
+  isSet() {
+    return this.patterns.isSet();
+  }
+
+  /**
+   * Return true if the patterns are valid.
+   */
+  isValid() {
+    try {
+      for (const p of this.patterns.patterns) {
+        this.toRegex(p);
+      }
+      return true;
+    } catch {
+      return false;
+    }
+  }
+
+  /**
+   * Return true if the given ABSOLUTE path matches the patterns.
+   *
+   * Throws an error if the patterns form an invalid regex (see `validate`).
+   */
+  isMatch(absPath) {
+    const relPath = path().relative(this.options.rootDir || '/', absPath);
+    if (this.patterns.patterns.length === 0) {
+      return true;
+    }
+    for (const p of this.patterns.patterns) {
+      const pathToTest = path().isAbsolute(p) ? absPath : relPath;
+
+      // special case: ./foo.spec.js (and .\foo.spec.js on Windows) should
+      // match /^foo.spec.js/ after stripping root dir
+      let regexStr = p.replace(/^\.\//, '^');
+      if (path().sep === '\\') {
+        regexStr = regexStr.replace(/^\.\\/, '^');
+      }
+      regexStr = (0, _jestRegexUtil().replacePathSepForRegex)(regexStr);
+      if (this.toRegex(regexStr).test(pathToTest)) {
+        return true;
+      }
+      if (this.toRegex(regexStr).test(absPath)) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  /**
+   * Return a human-friendly version of the pattern regex.
+   */
+  toPretty() {
+    return this.patterns.toPretty();
+  }
+}
+exports.TestPathPatternsExecutor = TestPathPatternsExecutor;
+
+/***/ })
+
+/******/ 	});
+/************************************************************************/
+/******/ 	// The module cache
+/******/ 	var __webpack_module_cache__ = {};
+/******/ 	
+/******/ 	// The require function
+/******/ 	function __webpack_require__(moduleId) {
+/******/ 		// Check if module is in cache
+/******/ 		var cachedModule = __webpack_module_cache__[moduleId];
+/******/ 		if (cachedModule !== undefined) {
+/******/ 			return cachedModule.exports;
+/******/ 		}
+/******/ 		// Create a new module (and put it into the cache)
+/******/ 		var module = __webpack_module_cache__[moduleId] = {
+/******/ 			// no module.id needed
+/******/ 			// no module.loaded needed
+/******/ 			exports: {}
+/******/ 		};
+/******/ 	
+/******/ 		// Execute the module function
+/******/ 		__webpack_modules__[moduleId](module, module.exports, __webpack_require__);
+/******/ 	
+/******/ 		// Return the exports of the module
+/******/ 		return module.exports;
+/******/ 	}
+/******/ 	
+/************************************************************************/
+var __webpack_exports__ = {};
+// This entry needs to be wrapped in an IIFE because it uses a non-standard name for the exports (exports).
+(() => {
+var exports = __webpack_exports__;
+
+
+Object.defineProperty(exports, "__esModule", ({
+  value: true
+}));
+Object.defineProperty(exports, "TestPathPatterns", ({
+  enumerable: true,
+  get: function () {
+    return _TestPathPatterns.TestPathPatterns;
+  }
+}));
+Object.defineProperty(exports, "TestPathPatternsExecutor", ({
+  enumerable: true,
+  get: function () {
+    return _TestPathPatterns.TestPathPatternsExecutor;
+  }
+}));
+var _TestPathPatterns = __webpack_require__("./src/TestPathPatterns.ts");
+})();
+
+module.exports = __webpack_exports__;
+/******/ })()
+;

frontend/node_modules/@jest/pattern/build/index.mjs

@@ -0,0 +1,4 @@
+import cjsModule from './index.js';
+
+export const TestPathPatterns = cjsModule.TestPathPatterns;
+export const TestPathPatternsExecutor = cjsModule.TestPathPatternsExecutor;

frontend/node_modules/@jest/pattern/package.json

@@ -0,0 +1,32 @@
+{
+  "name": "@jest/pattern",
+  "version": "30.0.1",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/jestjs/jest.git",
+    "directory": "packages/jest-pattern"
+  },
+  "license": "MIT",
+  "main": "./build/index.js",
+  "types": "./build/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./build/index.d.ts",
+      "require": "./build/index.js",
+      "import": "./build/index.mjs",
+      "default": "./build/index.js"
+    },
+    "./package.json": "./package.json"
+  },
+  "dependencies": {
+    "@types/node": "*",
+    "jest-regex-util": "30.0.1"
+  },
+  "engines": {
+    "node": "^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0"
+  },
+  "publishConfig": {
+    "access": "public"
+  },
+  "gitHead": "5ce865b4060189fe74cd486544816c079194a0f7"
+}

frontend/node_modules/@jest/pattern/src/TestPathPatterns.ts

@@ -0,0 +1,132 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import * as path from 'path';
+import {replacePathSepForRegex} from 'jest-regex-util';
+
+export class TestPathPatterns {
+  constructor(readonly patterns: Array<string>) {}
+
+  /**
+   * Return true if there are any patterns.
+   */
+  isSet(): boolean {
+    return this.patterns.length > 0;
+  }
+
+  /**
+   * Return true if the patterns are valid.
+   */
+  isValid(): boolean {
+    return this.toExecutor({
+      // isValid() doesn't require rootDir to be accurate, so just
+      // specify a dummy rootDir here
+      rootDir: '/',
+    }).isValid();
+  }
+
+  /**
+   * Return a human-friendly version of the pattern regex.
+   */
+  toPretty(): string {
+    return this.patterns.join('|');
+  }
+
+  /**
+   * Return a TestPathPatternsExecutor that can execute the patterns.
+   */
+  toExecutor(
+    options: TestPathPatternsExecutorOptions,
+  ): TestPathPatternsExecutor {
+    return new TestPathPatternsExecutor(this, options);
+  }
+
+  /** For jest serializers */
+  toJSON(): any {
+    return {
+      patterns: this.patterns,
+      type: 'TestPathPatterns',
+    };
+  }
+}
+
+export type TestPathPatternsExecutorOptions = {
+  rootDir: string;
+};
+
+export class TestPathPatternsExecutor {
+  constructor(
+    readonly patterns: TestPathPatterns,
+    private readonly options: TestPathPatternsExecutorOptions,
+  ) {}
+
+  private toRegex(s: string): RegExp {
+    return new RegExp(s, 'i');
+  }
+
+  /**
+   * Return true if there are any patterns.
+   */
+  isSet(): boolean {
+    return this.patterns.isSet();
+  }
+
+  /**
+   * Return true if the patterns are valid.
+   */
+  isValid(): boolean {
+    try {
+      for (const p of this.patterns.patterns) {
+        this.toRegex(p);
+      }
+      return true;
+    } catch {
+      return false;
+    }
+  }
+
+  /**
+   * Return true if the given ABSOLUTE path matches the patterns.
+   *
+   * Throws an error if the patterns form an invalid regex (see `validate`).
+   */
+  isMatch(absPath: string): boolean {
+    const relPath = path.relative(this.options.rootDir || '/', absPath);
+
+    if (this.patterns.patterns.length === 0) {
+      return true;
+    }
+
+    for (const p of this.patterns.patterns) {
+      const pathToTest = path.isAbsolute(p) ? absPath : relPath;
+
+      // special case: ./foo.spec.js (and .\foo.spec.js on Windows) should
+      // match /^foo.spec.js/ after stripping root dir
+      let regexStr = p.replace(/^\.\//, '^');
+      if (path.sep === '\\') {
+        regexStr = regexStr.replace(/^\.\\/, '^');
+      }
+
+      regexStr = replacePathSepForRegex(regexStr);
+      if (this.toRegex(regexStr).test(pathToTest)) {
+        return true;
+      }
+
+      if (this.toRegex(regexStr).test(absPath)) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  /**
+   * Return a human-friendly version of the pattern regex.
+   */
+  toPretty(): string {
+    return this.patterns.toPretty();
+  }
+}

frontend/node_modules/@jest/pattern/src/__tests__/TestPathPatterns.test.ts

@@ -0,0 +1,259 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import * as path from 'path';
+import {
+  TestPathPatterns,
+  TestPathPatternsExecutor,
+  type TestPathPatternsExecutorOptions,
+} from '../TestPathPatterns';
+
+const mockSep: jest.Mock<() => string> = jest.fn();
+const mockIsAbsolute: jest.Mock<(p: string) => boolean> = jest.fn();
+const mockRelative: jest.Mock<(from: string, to: string) => string> = jest.fn();
+jest.mock('path', () => {
+  const actualPath = jest.requireActual('path');
+  return {
+    ...actualPath,
+    isAbsolute(p) {
+      return mockIsAbsolute(p) || actualPath.isAbsolute(p);
+    },
+    relative(from, to) {
+      return mockRelative(from, to) || actualPath.relative(from, to);
+    },
+    get sep() {
+      return mockSep() || actualPath.sep;
+    },
+  } as typeof path;
+});
+const forcePosix = () => {
+  mockSep.mockReturnValue(path.posix.sep);
+  mockIsAbsolute.mockImplementation(path.posix.isAbsolute);
+  mockRelative.mockImplementation(path.posix.relative);
+};
+const forceWindows = () => {
+  mockSep.mockReturnValue(path.win32.sep);
+  mockIsAbsolute.mockImplementation(path.win32.isAbsolute);
+  mockRelative.mockImplementation(path.win32.relative);
+};
+beforeEach(() => {
+  jest.resetAllMocks();
+  forcePosix();
+});
+
+const config = {rootDir: ''};
+
+interface TestPathPatternsLike {
+  isSet(): boolean;
+  isValid(): boolean;
+  toPretty(): string;
+}
+
+const testPathPatternsLikeTests = (
+  makePatterns: (
+    patterns: Array<string>,
+    options: TestPathPatternsExecutorOptions,
+  ) => TestPathPatternsLike,
+) => {
+  describe('isSet', () => {
+    it('returns false if no patterns specified', () => {
+      const testPathPatterns = makePatterns([], config);
+      expect(testPathPatterns.isSet()).toBe(false);
+    });
+
+    it('returns true if patterns specified', () => {
+      const testPathPatterns = makePatterns(['a'], config);
+      expect(testPathPatterns.isSet()).toBe(true);
+    });
+  });
+
+  describe('isValid', () => {
+    it('succeeds for empty patterns', () => {
+      const testPathPatterns = makePatterns([], config);
+      expect(testPathPatterns.isValid()).toBe(true);
+    });
+
+    it('succeeds for valid patterns', () => {
+      const testPathPatterns = makePatterns(['abc+', 'z.*'], config);
+      expect(testPathPatterns.isValid()).toBe(true);
+    });
+
+    it('fails for at least one invalid pattern', () => {
+      const testPathPatterns = makePatterns(['abc+', '(', 'z.*'], config);
+      expect(testPathPatterns.isValid()).toBe(false);
+    });
+  });
+
+  describe('toPretty', () => {
+    it('renders a human-readable string', () => {
+      const testPathPatterns = makePatterns(['a/b', 'c/d'], config);
+      expect(testPathPatterns.toPretty()).toMatchSnapshot();
+    });
+  });
+};
+
+describe('TestPathPatterns', () => {
+  testPathPatternsLikeTests(
+    (patterns: Array<string>, _: TestPathPatternsExecutorOptions) =>
+      new TestPathPatterns(patterns),
+  );
+});
+
+describe('TestPathPatternsExecutor', () => {
+  const makeExecutor = (
+    patterns: Array<string>,
+    options: TestPathPatternsExecutorOptions,
+  ) => new TestPathPatternsExecutor(new TestPathPatterns(patterns), options);
+
+  testPathPatternsLikeTests(makeExecutor);
+
+  describe('isMatch', () => {
+    it('returns true with no patterns', () => {
+      const testPathPatterns = makeExecutor([], config);
+      expect(testPathPatterns.isMatch('/a/b')).toBe(true);
+    });
+
+    it('returns true for same path', () => {
+      const testPathPatterns = makeExecutor(['/a/b'], config);
+      expect(testPathPatterns.isMatch('/a/b')).toBe(true);
+    });
+
+    it('returns true for same path with case insensitive', () => {
+      const testPathPatternsUpper = makeExecutor(['/A/B'], config);
+      expect(testPathPatternsUpper.isMatch('/a/b')).toBe(true);
+      expect(testPathPatternsUpper.isMatch('/A/B')).toBe(true);
+
+      const testPathPatternsLower = makeExecutor(['/a/b'], config);
+      expect(testPathPatternsLower.isMatch('/A/B')).toBe(true);
+      expect(testPathPatternsLower.isMatch('/a/b')).toBe(true);
+    });
+
+    it('returns true for contained path', () => {
+      const testPathPatterns = makeExecutor(['b/c'], config);
+      expect(testPathPatterns.isMatch('/a/b/c/d')).toBe(true);
+    });
+
+    it('returns true for explicit relative path', () => {
+      const testPathPatterns = makeExecutor(['./b/c'], {
+        rootDir: '/a',
+      });
+      expect(testPathPatterns.isMatch('/a/b/c')).toBe(true);
+    });
+
+    it('returns true for explicit relative path for Windows with ./', () => {
+      forceWindows();
+      const testPathPatterns = makeExecutor(['./b/c'], {
+        rootDir: 'C:\\a',
+      });
+      expect(testPathPatterns.isMatch('C:\\a\\b\\c')).toBe(true);
+    });
+
+    it('returns true for explicit relative path for Windows with .\\', () => {
+      forceWindows();
+      const testPathPatterns = makeExecutor(['.\\b\\c'], {
+        rootDir: 'C:\\a',
+      });
+      expect(testPathPatterns.isMatch('C:\\a\\b\\c')).toBe(true);
+    });
+
+    it('returns true for partial file match', () => {
+      const testPathPatterns = makeExecutor(['aaa'], config);
+      expect(testPathPatterns.isMatch('/foo/..aaa..')).toBe(true);
+      expect(testPathPatterns.isMatch('/foo/..aaa')).toBe(true);
+      expect(testPathPatterns.isMatch('/foo/aaa..')).toBe(true);
+    });
+
+    it('returns true for path suffix', () => {
+      const testPathPatterns = makeExecutor(['c/d'], config);
+      expect(testPathPatterns.isMatch('/a/b/c/d')).toBe(true);
+    });
+
+    it('returns true if regex matches', () => {
+      const testPathPatterns = makeExecutor(['ab*c?'], config);
+
+      expect(testPathPatterns.isMatch('/foo/a')).toBe(true);
+      expect(testPathPatterns.isMatch('/foo/ab')).toBe(true);
+      expect(testPathPatterns.isMatch('/foo/abb')).toBe(true);
+      expect(testPathPatterns.isMatch('/foo/ac')).toBe(true);
+      expect(testPathPatterns.isMatch('/foo/abc')).toBe(true);
+      expect(testPathPatterns.isMatch('/foo/abbc')).toBe(true);
+
+      expect(testPathPatterns.isMatch('/foo/bc')).toBe(false);
+    });
+
+    it('returns true only if matches relative path', () => {
+      const rootDir = '/home/myuser/';
+
+      const testPathPatterns = makeExecutor(['home'], {
+        rootDir,
+      });
+      expect(
+        testPathPatterns.isMatch(
+          path.relative(rootDir, '/home/myuser/LoginPage.js'),
+        ),
+      ).toBe(false);
+      expect(
+        testPathPatterns.isMatch(
+          path.relative(rootDir, '/home/myuser/HomePage.js'),
+        ),
+      ).toBe(true);
+    });
+
+    it('matches absolute paths regardless of rootDir', () => {
+      forcePosix();
+      const testPathPatterns = makeExecutor(['/a/b'], {
+        rootDir: '/foo/bar',
+      });
+      expect(testPathPatterns.isMatch('/a/b')).toBe(true);
+    });
+
+    it('matches absolute paths for Windows', () => {
+      forceWindows();
+      const testPathPatterns = makeExecutor(['C:\\a\\b'], {
+        rootDir: 'C:\\foo\\bar',
+      });
+      expect(testPathPatterns.isMatch('C:\\a\\b')).toBe(true);
+    });
+
+    it('returns true if match any paths', () => {
+      const testPathPatterns = makeExecutor(['a/b', 'c/d'], config);
+
+      expect(testPathPatterns.isMatch('/foo/a/b')).toBe(true);
+      expect(testPathPatterns.isMatch('/foo/c/d')).toBe(true);
+
+      expect(testPathPatterns.isMatch('/foo/a')).toBe(false);
+      expect(testPathPatterns.isMatch('/foo/b/c')).toBe(false);
+    });
+
+    it('does not normalize Windows paths on POSIX', () => {
+      forcePosix();
+      const testPathPatterns = makeExecutor(['a\\z', 'a\\\\z'], config);
+      expect(testPathPatterns.isMatch('/foo/a/z')).toBe(false);
+    });
+
+    it('normalizes paths for Windows', () => {
+      forceWindows();
+      const testPathPatterns = makeExecutor(['a/b'], config);
+      expect(testPathPatterns.isMatch('C:\\foo\\a\\b')).toBe(true);
+    });
+
+    it('matches absolute path with absPath', () => {
+      const pattern = '^/home/app/';
+      const rootDir = '/home/app';
+      const absolutePath = '/home/app/packages/';
+
+      const testPathPatterns = makeExecutor([pattern], {
+        rootDir,
+      });
+
+      const relativePath = path.relative(rootDir, absolutePath);
+
+      expect(testPathPatterns.isMatch(relativePath)).toBe(false);
+      expect(testPathPatterns.isMatch(absolutePath)).toBe(true);
+    });
+  });
+});

frontend/node_modules/@jest/pattern/src/__tests__/__snapshots__/TestPathPatterns.test.ts.snap

@@ -0,0 +1,5 @@
+// Jest Snapshot v1, https://jestjs.io/docs/snapshot-testing
+
+exports[`TestPathPatterns toPretty renders a human-readable string 1`] = `"a/b|c/d"`;
+
+exports[`TestPathPatternsExecutor toPretty renders a human-readable string 1`] = `"a/b|c/d"`;

frontend/node_modules/@jest/pattern/src/index.ts

@@ -0,0 +1,12 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+export {
+  TestPathPatterns,
+  TestPathPatternsExecutor,
+  type TestPathPatternsExecutorOptions,
+} from './TestPathPatterns';

frontend/node_modules/@jest/pattern/tsconfig.json

@@ -0,0 +1,10 @@
+{
+  "extends": "../../tsconfig.json",
+  "compilerOptions": {
+    "rootDir": "src",
+    "outDir": "build"
+  },
+  "include": ["./src/**/*"],
+  "exclude": ["./**/__tests__/**/*"],
+  "references": [{"path": "../jest-regex-util"}]
+}