jest.config.ts

/**
 * For a detailed explanation regarding each configuration property, visit:
 * https://jestjs.io/docs/configuration
 */

import type { Config } from 'jest';

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

const config: Config = {
  // Automatically clear mock calls, instances, contexts and results before every test
  clearMocks: true,

  // Indicates whether the coverage information should be collected while executing the test
  collectCoverage: true,

  // The directory where Jest should output its coverage files
  coverageDirectory: "coverage",

  // An array of file extensions your modules use
  moduleFileExtensions: [
    "js",
    "mjs",
    "cjs",
    "jsx",
    "ts",
    "tsx"
  ],

  // A list of paths to directories that Jest should use to search for files in
  roots: [
    "<rootDir>/tests"
  ],


  // The test environment that will be used for testing
  testEnvironment: "jsdom",


  // The glob patterns Jest uses to detect test files
  testMatch: [
    "**/__tests__/**/*.[jt]s?(x)",
    "**/?(*.)+(spec|test).[tj]s?(x)"
  ],

  // A map from regular expressions to paths to transformers
  transform: {
    "^.+\\.(js|jsx|ts|tsx)$": "babel-jest"
  }

};

export default createJestConfig(config)