jest.config.js

/** @type {import('ts-jest').JestConfigWithTsJest} */
module.exports = {
  preset: 'ts-jest',
  testEnvironment: 'jsdom',
  roots: ['<rootDir>/src'],
  testMatch: ['**/__tests__/**/*.test.ts?(x)', '**/*.test.ts?(x)'],
  moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json'],
  setupFilesAfterEnv: ['<rootDir>/jest.setup.ts'],
  moduleNameMapper: {
    // Handle CSS imports
    '\\.(css|less|scss|sass)$': 'identity-obj-proxy',
  },
  transform: {
    '^.+\\.tsx?$': ['ts-jest', {
      tsconfig: {
        jsx: 'react-jsx',
        esModuleInterop: true,
        strict: true,
        skipLibCheck: true,
        module: 'commonjs',
        moduleResolution: 'node',
        types: ['jest', 'node', '@testing-library/jest-dom'],
      },
    }],
  },
  collectCoverageFrom: [
    'src/**/*.{ts,tsx}',
    '!src/**/*.d.ts',
    '!src/main/**/*',
  ],
};