jest.config.js

module.exports = {
  collectCoverageFrom: [
    '**/*.{ts,tsx}',
    '!**/*.d.ts',
    '!**/node_modules/**',
    '!**/*.mdx',
    '!**/*.md',
  ],
  setupFilesAfterEnv: ['<rootDir>/jest.setup.ts'],
  testEnvironment: 'jsdom',
  testPathIgnorePatterns: ['<rootDir>/.next/', '<rootDir>/node_modules/'],
  moduleNameMapper: {
    '#pages/(.*)': '<rootDir>/src/pages/$1',
    '#components/(.*)': '<rootDir>/src/components/$1',
    '#test/(.*)': '<rootDir>/src/test/$1',
    '#lib/(.*)': '<rootDir>/src/lib/$1',
    '#content/(.*)': '<rootDir>/src/content/$1',
    /* Handle CSS imports (with CSS modules)
    https://jestjs.io/docs/webpack#mocking-css-modules */
    '^.+\\.module\\.(css|sass|scss)$': 'identity-obj-proxy',
    // Handle CSS imports (without CSS modules)
    '^.+\\.(css|sass|scss)$': '<rootDir>/src/test/__mocks__/styleMock.js',
    /* Handle image imports
    https://jestjs.io/docs/webpack#handling-static-assets */
    '^.+\\.(jpg|jpeg|png|gif|webp|avif|svg)$':
      '<rootDir>/src/test/__mocks__/fileMock.js',
  },
  transform: {
    /* Use babel-jest to transpile tests with the next/babel preset
    https://jestjs.io/docs/configuration#transform-objectstring-pathtotransformer--pathtotransformer-object */
    '^.+\\.(js|jsx|ts|tsx)$': ['babel-jest', { presets: ['next/babel'] }],
  },
  transform: {
    /* Use babel-jest to transpile tests with the next/babel preset
    https://jestjs.io/docs/configuration#transform-objectstring-pathtotransformer--pathtotransformer-object */
    '^.+\\.(js|jsx|ts|tsx)$': ['babel-jest', { presets: ['next/babel'] }],
  },
}