vendure/packages/email-plugin/jest.config.js

module.exports = {
    coverageDirectory: 'coverage',
    moduleFileExtensions: ['js', 'json', 'ts'],
    preset: 'ts-jest',
    rootDir: __dirname,
    roots: ['<rootDir>/src'],
    transform: {
        '^.+\\.(t|j)s$': [
            'ts-jest',
            {
                isolatedModules: true,
                tsconfig: {
                    allowJs: true,
                    skipLibCheck: true,
                },
            },
        ],
    },
    testEnvironment: 'node',
};