jest.config.js

// eslint-disable-next-line @typescript-eslint/no-require-imports
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: {
    '^@/(.*)$': '<rootDir>/$1',
  },
  testMatch: [
    '**/__tests__/**/*.[jt]s?(x)',
    '**/?(*.)+(spec|test).[jt]s?(x)'
  ],
  collectCoverageFrom: [
    'lib/**/*.{js,ts}',
    'components/**/*.{js,ts,jsx,tsx}',
    'app/**/*.{js,ts,jsx,tsx}',
    '!**/*.d.ts',
    '!**/node_modules/**',
    '!lib/problems/**', // Problem files are data, not code to cover
  ],
  coverageThreshold: {
    global: {
      statements: 40,
      branches: 40,
      functions: 40,
      lines: 40,
    },
  },
  coverageReporters: ['text', 'text-summary', 'lcov', 'html'],
}

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