Jest config for NextJS, need to install "identity-obj-proxy"

jest.config.js

module.exports = {
  testPathIgnorePatterns: ['<rootDir>/.next/', '<rootDir>/node_modules/'],
  setupFilesAfterEnv: ['<rootDir>/setupTests.js'],
  transform: {
    '^.+\\.(js|jsx|ts|tsx)$': '<rootDir>/node_modules/babel-jest',
    '\\.(css|less|scss|sass)$': 'identity-obj-proxy',
    '\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$':
      '<rootDir>/fileTransformer.js',
  },
};