jest.config.json

{
  "preset": "ts-jest",
  "testEnvironment": "jsdom",
  "setupFilesAfterEnv": ["./jest.setup.js"],
  "moduleFileExtensions": ["ts", "tsx", "js", "jsx"],
  "transform": {
    "^.+\\.(ts|tsx|js|jsx)$": ["ts-jest", {
      "tsconfig": {
        "jsx": "react-jsx",
        "esModuleInterop": true,
        "allowSyntheticDefaultImports": true,
        "allowJs": true,
        "module": "commonjs",
        "types": ["jest", "node", "@testing-library/jest-dom"]
      }
    }]
  },
  "testMatch": [
    "**/*.test.(ts|tsx|js|jsx)"
  ],
  "transformIgnorePatterns": [
    "node_modules/(?!(@?react|react-dom)/)"
  ],
  "moduleNameMapper": {
    "\\.(css|less|scss|sass)$": "identity-obj-proxy"
  },
  "setupFilesAfterEnv": ["<rootDir>/jest.setup.ts"]
}