jest.config.js

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

module.exports = {
    // Automatically clear mock calls and instances between every test
    clearMocks: true,

    // Indicates whether the coverage information should be collected while executing the test
    collectCoverage: process.env.NODE_ENV === 'test',

    // 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: ['index.ts', '/node_modules/', 'dist'],

    // An object that configures minimum threshold enforcement for coverage results
    coverageThreshold: {
        global: {
            branches: 70,
            functions: 70,
            lines: 70,
            statements: 70
        }
    },

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

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

    // The glob patterns Jest uses to detect test files
    testMatch: ['**/src/**/__tests__/**/*.[jt]s?(x)', '**/src/**/?(*.)+(spec|test).[tj]s?(x)'],
    // A map from regular expressions to paths to transformers
    transform: {
        '\\.(ts)$': 'ts-jest'
    },
    transformIgnorePatterns: ['node_modules', 'dist'],
    moduleDirectories: ['node_modules', 'src'],
    moduleNameMapper: {
        '@services': '<rootDir>/src/services',
        '@configs': '<rootDir>/src/configs',
        '@constants': '<rootDir>/src/constants',
        '@dtos/common': '<rootDir>/src/dtos/common.dto.ts',
        '@dtos/in': '<rootDir>/src/dtos/in',
        '@dtos/out': '<rootDir>/src/dtos/out',
        '@hooks': '<rootDir>/src/hooks',
        '@routes': '<rootDir>/src/routes',
        '@utils': '<rootDir>/src/utils.ts'
    },
    roots: ['<rootDir>']
};