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",
    ],

    transform: {
        "^.+\\.(t|j)s$": "ts-jest",
    },

    // 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: {},

    // 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.(js|jsx|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/"],
};