jest.config.js

module.exports = {
    // 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: false,

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

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

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

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

    // The glob patterns Jest uses to detect test files
    testMatch: [
        '<rootDir>/**/*.test.(ts|tsx)',
        '<rootDir>/(tests/unit/**/*.spec.(js|jsx|ts|tsx)|**/__tests__/*.(js|jsx|ts|tsx))',
    ],

    // An array of regexp pattern strings that are matched against all source file paths, matched files will skip transformation
    transformIgnorePatterns: ['<rootDir>/node_modules/'],
};