jest.config.js

const nextJest = require('next/jest')
 
// Providing the path to your Next.js app which will enable loading next.config.js and .env files
const createJestConfig = nextJest({ dir: './' })
 
// Any custom config you want to pass to Jest
const customJestConfig = {
  roots: ["<rootDir>/src"],
  moduleFileExtensions: ["js", "jsx", "json", "node"],
  testPathIgnorePatterns: ["/node_modules/"],
  testEnvironment: "jsdom",
  transform: {
    "^.+\\.(js|jsx)$": "babel-jest",
  },
  testRegex: "(/__tests__/.*|(\\.|/)(test|spec))\\.(js|jsx)$",
  moduleNameMapper: {
    "^.+\\.(css|less|scss)$": "identity-obj-proxy",
  },
  collectCoverageFrom: ["src/**/*.{js,jsx}"],
  coverageDirectory: "coverage",
  coveragePathIgnorePatterns: ["src/index.js"],
  coverageReporters: ["json", "lcov", "text", "clover"],
  moduleNameMapper: {
    '^@/(.*)$': '<rootDir>/src/$1',
  },
}
 
// createJestConfig is exported in this way to ensure that next/jest can load the Next.js configuration, which is async
module.exports = createJestConfig(customJestConfig)