jest.config.cjs

// jest.config.js
module.exports = {
  testEnvironment: 'node', // Use node environment for main process tests
  preset: 'ts-jest',
  transform: {
    '^.+\\.tsx?$': [
      'ts-jest',
      {
        tsconfig: 'tsconfig.test.json',
        diagnostics: {
          ignoreCodes: [2307],
        },
      },
    ], // Transform TypeScript files using ts-jest
    '^.+\\.jsx?$': 'babel-jest', // Transform JS files using Babel
  },
  // Optional: Mock CSS/image imports if they cause errors
  moduleNameMapper: {
    '^(\\.{1,2}/.*)\\.js$': '$1',
    '^@shared/(.*)\\.js$': '<rootDir>/src/shared/$1',
    '^@shared/(.*)$': '<rootDir>/src/shared/$1',
    '^@renderer/(.*)\\.js$': '<rootDir>/src/renderer/src/$1',
    '^@renderer/(.*)$': '<rootDir>/src/renderer/src/$1',
    '\\.(css|less|sass|scss)$': 'identity-obj-proxy', // Mocks CSS module imports
    '\\.(gif|ttf|eot|svg|png)$': '<rootDir>/__mocks__/fileMock.js', // Mocks file imports
  },
  // Optional: Setup file to run before tests (e.g., global mocks)
  // setupFilesAfterEnv: ['<rootDir>/jest.setup.js'],
  // Specify the directory where your source files are located
  roots: ['<rootDir>/src'], // Adjust if your source files are elsewhere
  // Specify the test file pattern
  testMatch: ['**/__tests__/**/*.?(m)[jt]s?(x)', '**/?(*.)+(spec|test).?(m)[jt]s?(x)'],
  // Collect coverage from source files, excluding certain patterns
  collectCoverageFrom: [
    'src/**/*.{js,jsx,ts,tsx}', // Adjust to match your source structure
    '!src/**/*.d.ts',
    '!src/main.ts', // Exclude main process file
    '!src/preload.ts', // Exclude preload scripts
    '!src/**/*.test.{js,jsx,ts,tsx}', // Exclude test files themselves
    '!src/**/index.ts', // Exclude index barrels if any
    // Add other files/patterns to exclude from coverage
  ],
  coverageDirectory: 'coverage',
  coverageReporters: ['text', 'lcov', 'clover'],
  coveragePathIgnorePatterns: [
    '<rootDir>/src/renderer/',
    '<rootDir>/src/shared/types/global.d.ts',
    '<rootDir>/src/shared/types/global-main.d.ts',
  ],
};