jest.config.js

module.exports = {
  roots: ['src'],
  testEnvironment: 'jsdom',
  setupFilesAfterEnv: [
    '@testing-library/jest-dom/extend-expect',
    './jest.setup.ts',
  ],
  moduleFileExtensions: ['ts', 'tsx', 'js'],
  testPathIgnorePatterns: ['node_modules/'],
  transform: {
    '^.+\\.tsx?$': 'ts-jest',
  },
  testMatch: ['**/*.spec.(ts|tsx)'],
  moduleNameMapper: {
    // Mocks out all these file formats when tests are run.
    '\\.(jpg|ico|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$':
      'identity-obj-proxy',
    '\\.(css|less|scss|sass)$': '<rootDir>/__mocks__/styles.ts',
  },
  collectCoverage: true,
  collectCoverageFrom: [
    'src/**/*.{ts,tsx}',
  ],
  coveragePathIgnorePatterns: [
    'node_modules',
    'test-config',
    'interfaces',
    'jestGlobalMocks.ts',
    '.module.ts',
    '<rootDir>/index.ts',
    '.types.tsx',
  ],
};