jest.config.js

const ig = ['node_modules', '.*/lib/.*'];

module.exports = {
  testRegex: 'src/.*/?__tests__/.*.test\\.jsx?$',
  setupFilesAfterEnv: ['./jest.setup.js'],

  // Jest 29 requires explicit jsdom environment
  testEnvironment: 'jsdom',
  testEnvironmentOptions: {
    url: 'http://localhost',
  },

  testRunner: 'jest-circus/runner',

  verbose: false,
  testPathIgnorePatterns: ig,

  // Transform ES modules from these packages
  transformIgnorePatterns: ['node_modules/(?!(@mui|@emotion|@testing-library|@dnd-kit|@tiptap|@mapbox|d3-.*|lodash-es)(/|$))'],

  // Custom resolver to handle node: protocol imports
  resolver: '<rootDir>/jest-resolver.js',

  moduleNameMapper: {
    // CSS/Style imports
    '\\.(css|less|scss|sass)$': 'identity-obj-proxy',

    // Image imports
    '\\.(jpg|jpeg|png|gif|svg|webp)$': '<rootDir>/__mocks__/fileMock.js',

    // Workspace packages - map to source
    '^@pie-lib/(.*)$': '<rootDir>/packages/$1/src',
    '^d3-array$': '<rootDir>/node_modules/d3-array/dist/d3-array.js',
  },

  // Collect coverage from source files
  collectCoverageFrom: [
    'packages/*/src/**/*.{js,jsx}',
    '!packages/*/src/**/*.d.ts',
    '!packages/*/src/**/__tests__/**',
    '!packages/*/src/**/__mocks__/**',
  ],
};