jest.config.ts

export default {
    // Enable coverage collection
    collectCoverage: true,

    // Specify the files for which coverage information should be collected
    collectCoverageFrom: ['src/**/*.{js,jsx,ts,tsx}'],

    // Directory where Jest should output its coverage files
    coverageDirectory: 'coverage',

    // The test environment that will be used for testing
    testEnvironment: 'jsdom',

    // An array of file extensions your modules use
    moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx'],

    // A list of paths to modules that run some code to configure or set up the testing environment before each test
    setupFilesAfterEnv: ['<rootDir>/src/tests/setupTests.ts'],

    // An array of regexp pattern strings that are matched against all test paths, matched tests are skipped
    testPathIgnorePatterns: ['<rootDir>/node_modules'],

    // 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: {
        '^@/(.*)$': '<rootDir>/src/$1',
    },

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