jest.config.js

const { defaults } = require('jest-config');

module.exports = {
  rootDir: './',
  roots: ['<rootDir>/src'],
  collectCoverageFrom: ['src/**/*.{js,jsx}', 'src/app/**/*.{js,jsx}'],
  coverageDirectory: '<rootDir>/coverage/',
  coverageReporters: ['lcov', 'text', 'text-summary'],
  moduleFileExtensions: [...defaults.moduleFileExtensions],
  moduleNameMapper: {
    '\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$':
      '<rootDir>/__mocks__/fileMock.js',
    '\\.(css|less)$': '<rootDir>/__mocks__/styleMock.js',
    '^app(.*)': '<rootDir>/src/app/$1',
    '^components(.*)': '<rootDir>/src/components/$1',
    '^locales(.*)': '<rootDir>/src/locales/$1',
    '^modules(.*)': '<rootDir>/src/modules/$1',
    '^routes(.*)': '<rootDir>/src/routes/$1',
    '^utils(.*)': '<rootDir>/src/utils/$1',
  },
  modulePaths: ['node_modules', '<rootDir>', '<roots>'],
  setupFilesAfterEnv: ['./setupTests.js'],
  testEnvironment: 'jest-environment-jsdom-fourteen',
  testMatch: [
    '<rootDir>/src/*.{spec,test}.{js,jsx,ts,tsx}',
    '<rootDir>/src/**/*.{spec,test}.{js,jsx,ts,tsx}',
    '<rootDir>/src/**/__tests__/**/*.{js,jsx,ts,tsx}',
  ],
  testPathIgnorePatterns: ['<rootDir>[/\\\\](build|docs|node_modules|public)[/\\\\]'],
  transform: {
    '^.+\\.(js|jsx|ts|tsx)$': '<rootDir>/node_modules/babel-jest',
  },
  transformIgnorePatterns: ['[/\\\\]node_modules[/\\\\].+\\.(js|jsx|ts|tsx)$', '^.+\\.module\\.(css|sass|scss)$'],
  watchPlugins: ['jest-watch-typeahead/filename', 'jest-watch-typeahead/testname'],
};