jest.config.js

module.exports = {
  roots: ['<rootDir>'],
  moduleFileExtensions: ['ts', 'tsx', 'js', 'json', 'jsx'],
  testPathIgnorePatterns: ['<rootDir>[/\\\\](node_modules|.next)[/\\\\]'],
  transformIgnorePatterns: ['[/\\\\]node_modules[/\\\\].+\\.(ts|tsx)$'],
  transform: {
    '^.+\\.stories\\.tsx$': '@storybook/addon-storyshots/injectFileName',
    '^.+\\.(js|ts|tsx)$': 'babel-jest',
  },
  testMatch: ['<rootDir>/**/?(*.)(spec|test).(ts|js)?(x)'],
  watchPlugins: [
    'jest-watch-typeahead/filename',
    'jest-watch-typeahead/testname',
  ],
  moduleNameMapper: {
    '\\.(styl|css|less|scss)$': '<rootDir>/test/__mocks__/styleMock.js',
    '\\.(gif|ttf|eot|svg|png)$': '<rootDir>/test/__mocks__/fileMock.js',
  },
  moduleDirectories: ['node_modules', 'src'],
}