jest.config.ts

import type { Config } from "jest";
import nextJest from "next/jest";

const createJestConfig = nextJest({
  // Provide the path to your Next.js app to load `next.config.js` and `.env` files in your test environment
  dir: "./",
});

// Add any custom config to be passed to Jest
const config: Config = {
  moduleNameMapper: {
    // Handle module aliases (this will be automatically configured for you soon)
    "^@/(.*)$": "<rootDir>/app/$1",

    "^@/public/(.*)$": "<rootDir>/public/$1",
  },
  setupFilesAfterEnv: ["<rootDir>/jest.setup.ts"],
  clearMocks: true,

  collectCoverage: false,
  collectCoverageFrom: [
    "./app/**/*.{js,jsx,ts,tsx}",
    "!./app/**/_*.{js,jsx,ts,tsx}",
    "!./app/**/*.stories.{js,jsx,ts,tsx}",
    "!**/*.d.ts",
    "!**/node_modules/**",
  ],

  coverageThreshold: {
    global: {
      branches: 80,
      functions: 80,
      lines: 80,
      statements: -10,
    },
  },
  coverageProvider: "v8",
  testEnvironment: "jsdom",
  testPathIgnorePatterns: [
    "<rootDir>/node_modules/",
    "<rootDir>/tests/",
    "<rootDir>/__checks__/",
  ],
  detectOpenHandles: true,
};

// createJestConfig is exported this way to ensure that next/jest can load the Next.js config which is async
export default createJestConfig(config);

// /**
//  * For a detailed explanation regarding each configuration property, visit:
//  * https://jestjs.io/docs/configuration
//  */

// import type {Config} from 'jest';

// const config: Config = {
//   // All imported modules in your tests should be mocked automatically
//   // automock: false,

//   // Stop running tests after `n` failures
//   // bail: 0,

//   // The directory where Jest should store its cached dependency information
//   // cacheDirectory: "C:\\Users\\Dell\\AppData\\Local\\Temp\\jest",

//   // Automatically clear mock calls, instances, contexts and results before every test
//   clearMocks: true,

//   // Indicates whether the coverage information should be collected while executing the test
//   collectCoverage: true,

//   // An array of glob patterns indicating a set of files for which coverage information should be collected
//   // collectCoverageFrom: undefined,

//   // The directory where Jest should output its coverage files
//   coverageDirectory: "coverage",

//   // An array of regexp pattern strings used to skip coverage collection
//   // coveragePathIgnorePatterns: [
//   //   "\\\\node_modules\\\\"
//   // ],

//   // Indicates which provider should be used to instrument code for coverage
//   coverageProvider: "v8",

//   // A list of reporter names that Jest uses when writing coverage reports
//   // coverageReporters: [
//   //   "json",
//   //   "text",
//   //   "lcov",
//   //   "clover"
//   // ],

//   // An object that configures minimum threshold enforcement for coverage results
//   // coverageThreshold: undefined,

//   // A path to a custom dependency extractor
//   // dependencyExtractor: undefined,

//   // Make calling deprecated APIs throw helpful error messages
//   // errorOnDeprecated: false,

//   // The default configuration for fake timers
//   // fakeTimers: {
//   //   "enableGlobally": false
//   // },

//   // Force coverage collection from ignored files using an array of glob patterns
//   // forceCoverageMatch: [],

//   // A path to a module which exports an async function that is triggered once before all test suites
//   // globalSetup: undefined,

//   // A path to a module which exports an async function that is triggered once after all test suites
//   // globalTeardown: undefined,

//   // A set of global variables that need to be available in all test environments
//   // globals: {},

//   // The maximum amount of workers used to run your tests. Can be specified as % or a number. E.g. maxWorkers: 10% will use 10% of your CPU amount + 1 as the maximum worker number. maxWorkers: 2 will use a maximum of 2 workers.
//   // maxWorkers: "50%",

//   // An array of directory names to be searched recursively up from the requiring module's location
//   // moduleDirectories: [
//   //   "node_modules"
//   // ],

//   // An array of file extensions your modules use
//   // moduleFileExtensions: [
//   //   "js",
//   //   "mjs",
//   //   "cjs",
//   //   "jsx",
//   //   "ts",
//   //   "tsx",
//   //   "json",
//   //   "node"
//   // ],

//   // A map from regular expressions to module names or to arrays of module names that allow to stub out resources with a single module
//   // moduleNameMapper: {},

//   // An array of regexp pattern strings, matched against all module paths before considered 'visible' to the module loader
//   // modulePathIgnorePatterns: [],

//   // Activates notifications for test results
//   // notify: false,

//   // An enum that specifies notification mode. Requires { notify: true }
//   // notifyMode: "failure-change",

//   // A preset that is used as a base for Jest's configuration
//   // preset: undefined,

//   // Run tests from one or more projects
//   // projects: undefined,

//   // Use this configuration option to add custom reporters to Jest
//   // reporters: undefined,

//   // Automatically reset mock state before every test
//   // resetMocks: false,

//   // Reset the module registry before running each individual test
//   // resetModules: false,

//   // A path to a custom resolver
//   // resolver: undefined,

//   // Automatically restore mock state and implementation before every test
//   // restoreMocks: false,

//   // The root directory that Jest should scan for tests and modules within
//   // rootDir: undefined,

//   // A list of paths to directories that Jest should use to search for files in
//   // roots: [
//   //   "<rootDir>"
//   // ],

//   // Allows you to use a custom runner instead of Jest's default test runner
//   // runner: "jest-runner",

//   // The paths to modules that run some code to configure or set up the testing environment before each test
//   // setupFiles: [],

//   // A list of paths to modules that run some code to configure or set up the testing framework before each test
//   // setupFilesAfterEnv: [],

//   // The number of seconds after which a test is considered as slow and reported as such in the results.
//   // slowTestThreshold: 5,

//   // A list of paths to snapshot serializer modules Jest should use for snapshot testing
//   // snapshotSerializers: [],

//   // The test environment that will be used for testing
//   // testEnvironment: "jest-environment-node",

//   // Options that will be passed to the testEnvironment
//   // testEnvironmentOptions: {},

//   // Adds a location field to test results
//   // testLocationInResults: false,

//   // The glob patterns Jest uses to detect test files
//   // testMatch: [
//   //   "**/__tests__/**/*.[jt]s?(x)",
//   //   "**/?(*.)+(spec|test).[tj]s?(x)"
//   // ],

//   // An array of regexp pattern strings that are matched against all test paths, matched tests are skipped
//   // testPathIgnorePatterns: [
//   //   "\\\\node_modules\\\\"
//   // ],

//   // The regexp pattern or array of patterns that Jest uses to detect test files
//   // testRegex: [],

//   // This option allows the use of a custom results processor
//   // testResultsProcessor: undefined,

//   // This option allows use of a custom test runner
//   // testRunner: "jest-circus/runner",

//   // A map from regular expressions to paths to transformers
//   // transform: undefined,

//   // An array of regexp pattern strings that are matched against all source file paths, matched files will skip transformation
//   // transformIgnorePatterns: [
//   //   "\\\\node_modules\\\\",
//   //   "\\.pnp\\.[^\\\\]+$"
//   // ],

//   // An array of regexp pattern strings that are matched against all modules before the module loader will automatically return a mock for them
//   // unmockedModulePathPatterns: undefined,

//   // Indicates whether each individual test should be reported during the run
//   // verbose: undefined,

//   // An array of regexp patterns that are matched against all source file paths before re-running tests in watch mode
//   // watchPathIgnorePatterns: [],

//   // Whether to use watchman for file crawling
//   // watchman: true,
// };

// export default config;