jest.config.js

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

module.exports = {

    /*
     * All imported modules in your tests should be mocked automatically
     * automock: false,
     */

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

    /*
     * Respect "browser" field in package.json when resolving modules
     * browser: false,
     */

    /*
     * The directory where Jest should store its cached dependency information
     * cacheDirectory: "/tmp/jest_rs",
     */

    // Automatically clear mock calls and instances between 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: [],
     */

    // 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/"
     * ],
     */

    /*
     * 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: null,
     */

    /*
     * A path to a custom dependency extractor
     * dependencyExtractor: null,
     */

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

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

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

    /*
     * 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',
        'json',
        'jsx',
        'ts',
        'tsx',
        'node',
        'svelte'
    ],

    /*
     * A map from regular expressions to 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: null,
     */

    /*
     * Run tests from one or more projects
     * projects: null,
     */

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

    /*
     * Automatically reset mock state between every test
     * resetMocks: false,
     */

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

    /*
     * A path to a custom resolver
     * resolver: null,
     */

    /*
     * Automatically restore mock state between every test
     * restoreMocks: false,
     */

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

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

    /*
     * 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: ['<rootDir>/test/index.js'],

    /*
     * 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-jsdom",
     */

    /*
     * 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: null,
     */

    /*
     * This option allows use of a custom test runner
     * testRunner: "jasmine2",
     */

    /*
     * This option sets the URL for the jsdom environment. It is reflected in properties such as location.href
     * testURL: "http://localhost",
     */

    /*
     * Setting this value to "fake" allows the use of fake timers for functions such as "setTimeout"
     * timers: "real",
     */

    // A map from regular expressions to paths to transformers
    transform: {
        '^.+\\.[jt]sx?$': 'babel-jest',
        '^.+\\.svelte$': 'jest-transform-svelte'
    }

    /*
     * An array of regexp pattern strings that are matched against all source file paths, matched files will skip transformation
     * transformIgnorePatterns: [
     *   "/node_modules/"
     * ],
     */

    /*
     * 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: null,
     */

    /*
     * 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,
     */
}