jest.config.js

// Jest configurations are leant from the official example from:
// https://github.com/vercel/next.js/tree/master/examples/with-jest
module.exports = {
  collectCoverageFrom: ['**/*.{js,jsx,ts,tsx}', '!**/*.d.ts', '!**/node_modules/**'],
  setupFilesAfterEnv: ['<rootDir>/config/jest/setupTests.js'],
  testMatch: [
    '<rootDir>/src/**/__tests__/**/*.{js,jsx,ts,tsx}',
    '<rootDir>/src/**/*.{spec,test}.{js,jsx,ts,tsx}',
    '<rootDir>/packages/*/src/**/__tests__/**/*.{js,jsx,ts,tsx}',
    '<rootDir>/packages/*/src/**/*.{spec,test}.{js,jsx,ts,tsx}',
  ],
  transform: {
    '^.+\\.(js|jsx|ts|tsx)$': '<rootDir>/node_modules/babel-jest',
    '^.+\\.css$': '<rootDir>/config/jest/cssTransform.js',
  },
  transformIgnorePatterns: [
    '[/\\\\]node_modules[/\\\\].+\\.(js|jsx|mjs|cjs|ts|tsx)$',
    '^.+\\.module\\.(css|sass|scss)$',
  ],
  moduleNameMapper: {
    '^.+\\.module\\.(css|sass|scss)$': 'identity-obj-proxy',
    '\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$':
      '<rootDir>/config/jest/fileMock.js',
    '^~/(.*)$': '<rootDir>/src/$1',
  },
};