module.exports = {
  preset: 'ts-jest/presets/default-esm',
  testEnvironment: 'node',

  // Tell Jest where to look for source code and tests
  roots: ['<rootDir>/src', '<rootDir>/tests'],

  // Explicitly match files in the tests folder
  testMatch: [
    '<rootDir>/tests/**/*.test.ts',
    '<rootDir>/tests/**/*.spec.ts'
  ],

  // Tell Jest to treat .ts files as ESM modules
  extensionsToTreatAsEsm: ['.ts'],

  // Fixes the "Cannot find module" error
  moduleNameMapper: {
    // If the import starts with . or .. and ends with .js, strip the .js
    '^(\\.{1,2}/.*)\\.js$': '$1',

    // Map the library to mock file
    // This tells Jest to load simple JS file instead of parsing the complex node_module
    //'^@BridgemanAccessible/ba-auth$': '<rootDir>/tests/__mocks__/ba-auth.js'
  },

  // Configure the transformer to enable ESM support
  transform: {
    '^.+\\.tsx?$': [
      'ts-jest',
      {
        useESM: true,
      }
    ]
  }
};