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.js"],
  testEnvironment: "jest-environment-jsdom",
  moduleNameMapper: {
    // Handle module aliases
    "^@/components/(.*)$": "<rootDir>/components/$1",
    "^@/app/(.*)$": "<rootDir>/app/$1",
    "^@/lib/(.*)$": "<rootDir>/lib/$1",
  },
  testPathIgnorePatterns: ["<rootDir>/node_modules/", "<rootDir>/.next/"],
  transform: {
    // Use babel-jest to transpile tests with the next/babel preset
    "^.+\\.(js|jsx|ts|tsx)$": ["babel-jest", { presets: ["next/babel"] }],
  },
  transformIgnorePatterns: ["/node_modules/", "^.+\\.module\\.(css|sass|scss)$"],
  collectCoverageFrom: [
    "**/*.{js,jsx,ts,tsx}",
    "!**/*.d.ts",
    "!**/node_modules/**",
    "!**/.next/**",
    "!**/coverage/**",
    "!jest.config.js",
    "!next.config.js",
  ],
}

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