@storybook/react/dist/esm/server/framework-preset-react.js

Storybook for React: Develop React Component in isolation with Hot Reloading.

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); enumerableOnly && (symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; })), keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = null != arguments[i] ? arguments[i] : {}; i % 2 ? ownKeys(Object(source), !0).forEach(function (key) { _defineProperty(target, key, source[key]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)) : ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } return target; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

import "core-js/modules/es.promise.js";
import path from 'path';
import ReactRefreshWebpackPlugin from '@pmmmwh/react-refresh-webpack-plugin';
import { logger } from '@storybook/node-logger';
export async function babel(config, options) {
  var isDevelopment = options.configType === 'DEVELOPMENT';
  var reactOptions = await options.presets.apply('reactOptions', {}, options);
  var fastRefreshEnabled = isDevelopment && (reactOptions.fastRefresh || process.env.FAST_REFRESH === 'true');

  if (!fastRefreshEnabled) {
    return config;
  }

  return _objectSpread(_objectSpread({}, config), {}, {
    plugins: [[require.resolve('react-refresh/babel'), {}, 'storybook-react-refresh'], ...(config.plugins || [])]
  });
}
var storybookReactDirName = path.dirname(require.resolve('@storybook/react/package.json')); // TODO: improve node_modules detection

var context = storybookReactDirName.includes('node_modules') ? path.join(storybookReactDirName, '../../') // Real life case, already in node_modules
: path.join(storybookReactDirName, '../../node_modules'); // SB Monorepo

var hasJsxRuntime = function () {
  try {
    require.resolve('react/jsx-runtime', {
      paths: [context]
    });

    return true;
  } catch (e) {
    return false;
  }
};

export async function babelDefault(config) {
  var presetReactOptions = hasJsxRuntime() ? {
    runtime: 'automatic'
  } : {};
  return _objectSpread(_objectSpread({}, config), {}, {
    presets: [...((config === null || config === void 0 ? void 0 : config.presets) || []), [require.resolve('@babel/preset-react'), presetReactOptions], require.resolve('@babel/preset-flow')],
    plugins: [...((config === null || config === void 0 ? void 0 : config.plugins) || []), require.resolve('babel-plugin-add-react-displayname')]
  });
}
export async function webpackFinal(config, options) {
  var isDevelopment = options.configType === 'DEVELOPMENT';
  var reactOptions = await options.presets.apply('reactOptions', {}, options);
  var fastRefreshEnabled = isDevelopment && (reactOptions.fastRefresh || process.env.FAST_REFRESH === 'true');

  if (!fastRefreshEnabled) {
    return config;
  } // matches the name of the plugin in CRA.


  var hasReactRefresh = config.plugins.find(function (p) {
    return p.constructor.name === 'ReactRefreshPlugin';
  });

  if (hasReactRefresh) {
    logger.warn("=> React refresh is already set. You don't need to set the option");
    return config;
  }

  logger.info('=> Using React fast refresh');
  return _objectSpread(_objectSpread({}, config), {}, {
    plugins: [...config.plugins, // Storybook uses webpack-hot-middleware https://github.com/storybookjs/storybook/issues/14114
    new ReactRefreshWebpackPlugin({
      overlay: {
        sockIntegration: 'whm'
      }
    })]
  });
}