jest.config.js

const nextJest = require("next/jest");

const createJestConfig = nextJest({
  // Provide the path to your Next.js app to load next.config.js and .env files in your test environment
  dir: "./",
});

// Add any custom config to be passed to Jest
const customJestConfig = {
  setupFilesAfterEnv: ["<rootDir>/jest.setup.ts"],
  moduleNameMapper: {
    "^@/components/(.*)$": "<rootDir>/components/$1",
    "^@/assets/(.*)$": "<rootDir>/assets/$1",
    "^@/lib/(.*)$": "<rootDir>/lib/$1",
  },
  collectCoverageFrom: [
    "**/*.{js,jsx,ts,tsx}",
    "!**/*.d.ts",
    "!**/node_modules/**",
  ],
  testEnvironment: "jsdom",
};

// createJestConfig is exported this way to ensure that next/jest can load the Next.js config which is async
module.exports = createJestConfig(customJestConfig);

// module.exports = {
//     collectCoverageFrom: [
//         "**/*.{js,jsx,ts,tsx}",
//         "!**/*.d.ts",
//         "!**/node_modules/**",
//     ],
//     moduleNameMapper: {
//         "^@/components/(.*)$": "<rootDir>/components/$1",
//         "^@/assets/(.*)$": "<rootDir>/assets/$1",
//         "^@/lib/(.*)$": "<rootDir>/lib/$1",
//     },
//     testPathIgnorePatterns: ["<rootDir>/node_modules/", "<rootDir>/.next/", "<rootDir>/prisma/"],
//     transform: {
//         // "\\.[jt]sx?$": "babel-jest"
//         "^.+\\.(js|jsx|ts|tsx)$": ["babel-jest", { presets: ["next/babel"] }],
//         "^.+\\.tsx?$": "ts-jest",
//     },
//     transformIgnorePatterns: [
//         "/node_modules/",
//         "^.+\\.module\\.(css|sass|scss)$",
//     ],
//     setupFilesAfterEnv: [
//         // "@testing-library/react/cleanup-after-each",
//         "@testing-library/jest-dom/extend-expect"
//     ],
//     moduleFileExtensions: ["ts", "tsx", "js", "jsx", "json", "node"],
//     testEnvironment: "jsdom",
//     verbose: true,
// }