jest.config.js

module.exports = {
  collectCoverage: true,
  coverageDirectory: "coverage",
  testEnvironment: "enzyme",
  testEnvironmentOptions: {
    enzymeAdapter: "react16"
  },
  transform: {
    "^.+\\.jsx?$": "<rootDir>/test/fileTransformer.js"
  },
  moduleNameMapper: {
    ".+\\.(css|styl|less|sass|scss)$": "identity-obj-proxy",
    ".+\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$":
      "<rootDir>/test/mocks/file-mock.js",
    "^@components(.*)$": "<rootDir>/src/components/$1"
  },
  testPathIgnorePatterns: ["node_modules", ".cache", "public", "cypress"],
  transformIgnorePatterns: ["node_modules/(?!(gatsby)/)"],
  globals: {
    __PATH_PREFIX__: ""
  },
  testURL: "http://localhost",
  setupFiles: ["<rootDir>/test/beforeSetup.js"],
  setupFilesAfterEnv: ["<rootDir>/test/setup.js"]
};