jest.config.js
module.exports = {
roots: ['<rootDir>/src'],
transform: {
'^.+\\.ts?$': 'ts-jest'
},
testRegex: '(/__tests__/.*|(\\.|/)(test|spec))\\.ts?$',
moduleFileExtensions: ['ts', 'js', 'json', 'node'],
collectCoverage: true,
collectCoverageFrom: ['**/*.{js,ts}', '!**/node_modules/**']
};