// @remove-file-on-eject

/**

* Copyright (c) 2015-present, Facebook, Inc.

*

* This source code is licensed under the MIT license found in the

* LICENSE file in the root directory of this source tree.

*/

const fs = require('node:fs');

const chalk = require('react-dev-utils/chalk');

const paths = require('../../config/paths');

const modules = require('../../config/modules');

module.exports = (resolve, rootDir, isEjecting) => {

// Use this instead of `paths.testsSetup` to avoid putting

// an absolute filename into configuration after ejecting.

const setupTestsMatches = paths.testsSetup.match(/src[/\\]setupTests\.(.+)/);

const setupTestsFileExtension = setupTestsMatches?.[1] || 'js';

const setupTestsFile = fs.existsSync(paths.testsSetup) ? `<rootDir>/src/setupTests.${setupTestsFileExtension}` : undefined;

const config = {

roots: ['<rootDir>/src'],

collectCoverageFrom: ['src/**/*.{js,jsx,ts,tsx}', '!src/**/*.d.ts'],

setupFiles: [isEjecting ? 'react-app-polyfill/jsdom' : require.resolve('react-app-polyfill/jsdom')],

setupFilesAfterEnv: setupTestsFile ? [setupTestsFile] : [],

testMatch: ['<rootDir>/src/**/__tests__/**/*.{js,jsx,ts,tsx}', '<rootDir>/src/**/*.{spec,test}.{js,jsx,ts,tsx}'],

testEnvironment: 'jsdom',

transform: {

'^.+\\.(js|jsx|mjs|cjs|ts|tsx)$': resolve('config/jest/babelTransform.js'),

'^.+\\.css$': resolve('config/jest/cssTransform.js'),

'^(?!.*\\.(js|jsx|mjs|cjs|ts|tsx|css|json)$)': resolve('config/jest/fileTransform.js'),

},

transformIgnorePatterns: ['[/\\\\]node_modules[/\\\\].+\\.(js|jsx|mjs|cjs|ts|tsx)$', '^.+\\.module\\.(css|sass|scss)$'],

modulePaths: modules.additionalModulePaths || [],

moduleNameMapper: {

'^react-native$': 'react-native-web',

'^.+\\.module\\.(css|sass|scss)$': 'identity-obj-proxy',

...(modules.jestAliases || {}),

},

moduleFileExtensions: [...paths.moduleFileExtensions, 'node'].filter((ext) => !ext.includes('mjs')),

watchPlugins: ['jest-watch-typeahead/filename', 'jest-watch-typeahead/testname'],

resetMocks: true,

};

if (rootDir) {

config.rootDir = rootDir;

}

const overrides = Object.assign({}, require(paths.appPackageJson).jest);

const supportedKeys = [

'clearMocks',

'collectCoverageFrom',

'coveragePathIgnorePatterns',

'coverageReporters',

'coverageThreshold',

'displayName',

'extraGlobals',

'globalSetup',

'globalTeardown',

'moduleNameMapper',

'resetMocks',

'resetModules',

'restoreMocks',

'snapshotSerializers',

'testMatch',

'transform',

'transformIgnorePatterns',

'watchPathIgnorePatterns',

];

if (overrides) {

supportedKeys.forEach((key) => {

if (Object.prototype.hasOwnProperty.call(overrides, key)) {

if (Array.isArray(config[key]) || typeof config[key] !== 'object') {

// for arrays or primitive types, directly override the config key

config[key] = overrides[key];

} else {

// for object types, extend gracefully

config[key] = Object.assign({}, config[key], overrides[key]);

}

delete overrides[key];

}

});

const unsupportedKeys = Object.keys(overrides);

if (unsupportedKeys.length) {

const isOverridingSetupFile = unsupportedKeys.indexOf('setupFilesAfterEnv') > -1;

if (isOverridingSetupFile) {

console.error(

chalk.red(

`We detected ${chalk.bold('setupFilesAfterEnv')} in your package.json.\n\nRemove it from Jest configuration, and put the initialization code in ${chalk.bold('src/setupTests.js')}.\nThis file will be loaded automatically.\n`,

),

);

} else {

console.error(

chalk.red(

`\nOut of the box, Create React App only supports overriding these Jest options:\n\n${supportedKeys.map((key) => chalk.bold(` \u2022 ${key}`)).join('\n')}.\n\nThese options in your package.json Jest configuration are not currently supported by Create React App:\n\n${unsupportedKeys.map((key) => chalk.bold(` \u2022 ${key}`)).join('\n')}\n\nIf you wish to override other Jest options, you need to eject from the default setup. You can do so by running ${chalk.bold('npm run eject')} but remember that this is a one-way operation. You may also file an issue with Create React App to discuss supporting more options out of the box.\n`,

),

);

}

process.exit(1);

}

}

return config;

};