jest.config.js

module.exports = {
  preset: 'ts-jest',
  testEnvironment: 'jsdom',
  roots: ['<rootDir>/src', '<rootDir>/tests'],
  testMatch: ['**/__tests__/**/*.ts', '**/?(*.)+(spec|test).ts'],
  moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json'],
  transform: {
    '^.+\\.tsx?$': ['ts-jest', {
      tsconfig: {
        jsx: 'react',
      },
    }],
  },
  moduleNameMapper: {
    '^@/(.*)$': '<rootDir>/src/$1',
  },
  setupFilesAfterEnv: ['<rootDir>/tests/setup.ts'],
  collectCoverageFrom: [
    'src/**/*.{ts,tsx}',
    '!src/**/*.d.ts',
    '!src/**/index.ts',
    '!src/**/index.tsx',
  ],
  coverageDirectory: 'coverage',
  coverageReporters: ['text', 'lcov', 'html'],
  // Mock Chrome APIs
  testEnvironmentOptions: {
    customExportConditions: [''],
  },
};