DrawerLayout.js: Support for the experimental syntax ‘flow’ isn’t currently enabled

SyntaxError: /Users/jacquesludik/CortexCoachWeb/node_modules/react-native-gesture-handler/DrawerLayout.js: Support for the experimental syntax ‘flow’ isn’t currently enabled (30:8):

28 | const SETTLING = ‘Settling’;
29 |

30 | export type PropType = {
| ^
31 | children: any,
32 | drawerBackgroundColor?: string,
33 | drawerPosition: ‘left’ | ‘right’,

Add @babel/preset-flow (https://git.io/JfeDn) to the ‘presets’ section of your Babel config to enable transformation.
If you want to leave it as-is, add @babel/plugin-syntax-flow (https://git.io/vb4yb) to the ‘plugins’ section to enable parsing.

3 thoughts on “DrawerLayout.js: Support for the experimental syntax ‘flow’ isn’t currently enabled

  1. Using this webpack.config.js i managed to remove the error but i’m getting another one 🤔

    'use strict';
    
    const fs = require('fs');
    const path = require('path');
    const webpack = require('webpack');
    const resolve = require('resolve');
    const PnpWebpackPlugin = require('pnp-webpack-plugin');
    const HtmlWebpackPlugin = require('html-webpack-plugin');
    const CaseSensitivePathsPlugin = require('case-sensitive-paths-webpack-plugin');
    const InlineChunkHtmlPlugin = require('react-dev-utils/InlineChunkHtmlPlugin');
    const TerserPlugin = require('terser-webpack-plugin');
    const MiniCssExtractPlugin = require('mini-css-extract-plugin');
    const OptimizeCSSAssetsPlugin = require('optimize-css-assets-webpack-plugin');
    const safePostCssParser = require('postcss-safe-parser');
    const ManifestPlugin = require('webpack-manifest-plugin');
    const InterpolateHtmlPlugin = require('react-dev-utils/InterpolateHtmlPlugin');
    const WorkboxWebpackPlugin = require('workbox-webpack-plugin');
    const WatchMissingNodeModulesPlugin = require('react-dev-utils/WatchMissingNodeModulesPlugin');
    const ModuleScopePlugin = require('react-dev-utils/ModuleScopePlugin');
    const getCSSModuleLocalIdent = require('react-dev-utils/getCSSModuleLocalIdent');
    const paths = require('./paths');
    const modules = require('./modules');
    const getClientEnvironment = require('./env');
    const ModuleNotFoundPlugin = require('react-dev-utils/ModuleNotFoundPlugin');
    const ForkTsCheckerWebpackPlugin = require('react-dev-utils/ForkTsCheckerWebpackPlugin');
    const typescriptFormatter = require('react-dev-utils/typescriptFormatter');
    
    const postcssNormalize = require('postcss-normalize');
    
    const appPackageJson = require(paths.appPackageJson);
    
    // Source maps are resource heavy and can cause out of memory issue for large source files.
    const shouldUseSourceMap = process.env.GENERATE_SOURCEMAP !== 'false';
    // Some apps do not need the benefits of saving a web request, so not inlining the chunk
    // makes for a smoother build process.
    const shouldInlineRuntimeChunk = process.env.INLINE_RUNTIME_CHUNK !== 'false';
    
    const imageInlineSizeLimit = parseInt(
      process.env.IMAGE_INLINE_SIZE_LIMIT || '10000',
    );
    
    // Check if TypeScript is setup
    const useTypeScript = fs.existsSync(paths.appTsConfig);
    
    // style files regexes
    const cssRegex = /\.css$/;
    const cssModuleRegex = /\.module\.css$/;
    const sassRegex = /\.(scss|sass)$/;
    const sassModuleRegex = /\.module\.(scss|sass)$/;
    
    // This is the production and development configuration.
    // It is focused on developer experience, fast rebuilds, and a minimal bundle.
    module.exports = function (webpackEnv) {
      const isEnvDevelopment = webpackEnv === 'development';
      const isEnvProduction = webpackEnv === 'production';
    
      // Variable used for enabling profiling in Production
      // passed into alias object. Uses a flag if passed into the build command
      const isEnvProductionProfile =
        isEnvProduction && process.argv.includes('--profile');
    
      // We will provide `paths.publicUrlOrPath` to our app
      // as %%PUBLIC_URL%% in `index.html` and `process.env.PUBLIC_URL` in JavaScript.
      // Omit trailing slash as %%PUBLIC_URL%%/xyz looks better than %%PUBLIC_URL%%xyz.
      // Get environment variables to inject into our app.
      const env = getClientEnvironment(paths.publicUrlOrPath.slice(0, -1));
    
      // common function to get style loaders
      const getStyleLoaders = (cssOptions, preProcessor) => {
        const loaders = [
          isEnvDevelopment && require.resolve('style-loader'),
          isEnvProduction && {
            loader: MiniCssExtractPlugin.loader,
            // css is located in `static/css`, use '../../' to locate index.html folder
            // in production `paths.publicUrlOrPath` can be a relative path
            options: paths.publicUrlOrPath.startsWith('.')
              ? {publicPath: '../../'}
              : {},
          },
          {
            loader: require.resolve('css-loader'),
            options: cssOptions,
          },
          {
            // Options for PostCSS as we reference these options twice
            // Adds vendor prefixing based on your specified browser support in
            // package.json
            loader: require.resolve('postcss-loader'),
            options: {
              // Necessary for external CSS imports to work
              // https://github.com/facebook/create-react-app/issues/2677
              ident: 'postcss',
              plugins: () => [
                require('postcss-flexbugs-fixes'),
                require('postcss-preset-env')({
                  autoprefixer: {
                    flexbox: 'no-2009',
                  },
                  stage: 3,
                }),
                // Adds PostCSS Normalize as the reset css with default options,
                // so that it honors browserslist config in package.json
                // which in turn let's users customize the target behavior as per their needs.
                postcssNormalize(),
              ],
              sourceMap: isEnvProduction && shouldUseSourceMap,
            },
          },
        ].filter(Boolean);
        if (preProcessor) {
          loaders.push(
            {
              loader: require.resolve('resolve-url-loader'),
              options: {
                sourceMap: isEnvProduction && shouldUseSourceMap,
              },
            },
            {
              loader: require.resolve(preProcessor),
              options: {
                sourceMap: true,
              },
            },
          );
        }
        return loaders;
      };
    
      return {
        mode: isEnvProduction ? 'production' : isEnvDevelopment && 'development',
        // Stop compilation early in production
        bail: isEnvProduction,
        devtool: isEnvProduction
          ? shouldUseSourceMap
            ? 'source-map'
            : false
          : isEnvDevelopment && 'cheap-module-source-map',
        // These are the "entry points" to our application.
        // This means they will be the "root" imports that are included in JS bundle.
        entry: [
          // Include an alternative client for WebpackDevServer. A client's job is to
          // connect to WebpackDevServer by a socket and get notified about changes.
          // When you save a file, the client will either apply hot updates (in case
          // of CSS changes), or refresh the page (in case of JS changes). When you
          // make a syntax error, this client will display a syntax error overlay.
          // Note: instead of the default WebpackDevServer client, we use a custom one
          // to bring better experience for Create React App users. You can replace
          // the line below with these two lines if you prefer the stock client:
          // require.resolve('webpack-dev-server/client') + '?/',
          // require.resolve('webpack/hot/dev-server'),
          isEnvDevelopment &&
            require.resolve('react-dev-utils/webpackHotDevClient'),
          // Finally, this is your app's code:
          paths.appIndexJs,
          // We include the app code last so that if there is a runtime error during
          // initialization, it doesn't blow up the WebpackDevServer client, and
          // changing JS code would still trigger a refresh.
        ].filter(Boolean),
        output: {
          // The build folder.
          path: isEnvProduction ? paths.appBuild : undefined,
          // Add /* filename */ comments to generated require()s in the output.
          pathinfo: isEnvDevelopment,
          // There will be one main bundle, and one file per asynchronous chunk.
          // In development, it does not produce real files.
          filename: isEnvProduction
            ? 'static/js/[name].[contenthash:8].js'
            : isEnvDevelopment && 'static/js/bundle.js',
          // TODO: remove this when upgrading to webpack 5
          futureEmitAssets: true,
          // There are also additional JS chunk files if you use code splitting.
          chunkFilename: isEnvProduction
            ? 'static/js/[name].[contenthash:8].chunk.js'
            : isEnvDevelopment && 'static/js/[name].chunk.js',
          // webpack uses `publicPath` to determine where the app is being served from.
          // It requires a trailing slash, or the file assets will get an incorrect path.
          // We inferred the "public path" (such as / or /my-project) from homepage.
          publicPath: paths.publicUrlOrPath,
          // Point sourcemap entries to original disk location (format as URL on Windows)
          devtoolModuleFilenameTemplate: isEnvProduction
            ? (info) =>
                path
                  .relative(paths.appSrc, info.absoluteResourcePath)
                  .replace(/\\/g, '/')
            : isEnvDevelopment &&
              ((info) =>
                path.resolve(info.absoluteResourcePath).replace(/\\/g, '/')),
          // Prevents conflicts when multiple webpack runtimes (from different apps)
          // are used on the same page.
          jsonpFunction: `webpackJsonp${appPackageJson.name}`,
          // this defaults to 'window', but by setting it to 'this' then
          // module chunks which are built will work in web workers as well.
          globalObject: 'this',
        },
        optimization: {
          minimize: isEnvProduction,
          minimizer: [
            // This is only used in production mode
            new TerserPlugin({
              terserOptions: {
                parse: {
                  // We want terser to parse ecma 8 code. However, we don't want it
                  // to apply any minification steps that turns valid ecma 5 code
                  // into invalid ecma 5 code. This is why the 'compress' and 'output'
                  // sections only apply transformations that are ecma 5 safe
                  // https://github.com/facebook/create-react-app/pull/4234
                  ecma: 8,
                },
                compress: {
                  ecma: 5,
                  warnings: false,
                  // Disabled because of an issue with Uglify breaking seemingly valid code:
                  // https://github.com/facebook/create-react-app/issues/2376
                  // Pending further investigation:
                  // https://github.com/mishoo/UglifyJS2/issues/2011
                  comparisons: false,
                  // Disabled because of an issue with Terser breaking valid code:
                  // https://github.com/facebook/create-react-app/issues/5250
                  // Pending further investigation:
                  // https://github.com/terser-js/terser/issues/120
                  inline: 2,
                },
                mangle: {
                  safari10: true,
                },
                // Added for profiling in devtools
                keep_classnames: isEnvProductionProfile,
                keep_fnames: isEnvProductionProfile,
                output: {
                  ecma: 5,
                  comments: false,
                  // Turned on because emoji and regex is not minified properly using default
                  // https://github.com/facebook/create-react-app/issues/2488
                  ascii_only: true,
                },
              },
              sourceMap: shouldUseSourceMap,
            }),
            // This is only used in production mode
            new OptimizeCSSAssetsPlugin({
              cssProcessorOptions: {
                parser: safePostCssParser,
                map: shouldUseSourceMap
                  ? {
                      // `inline: false` forces the sourcemap to be output into a
                      // separate file
                      inline: false,
                      // `annotation: true` appends the sourceMappingURL to the end of
                      // the css file, helping the browser find the sourcemap
                      annotation: true,
                    }
                  : false,
              },
              cssProcessorPluginOptions: {
                preset: ['default', {minifyFontValues: {removeQuotes: false}}],
              },
            }),
          ],
          // Automatically split vendor and commons
          // https://twitter.com/wSokra/status/969633336732905474
          // https://medium.com/webpack/webpack-4-code-splitting-chunk-graph-and-the-splitchunks-optimization-be739a861366
          splitChunks: {
            chunks: 'all',
            name: false,
          },
          // Keep the runtime chunk separated to enable long term caching
          // https://twitter.com/wSokra/status/969679223278505985
          // https://github.com/facebook/create-react-app/issues/5358
          runtimeChunk: {
            name: (entrypoint) => `runtime-${entrypoint.name}`,
          },
        },
        resolve: {
          // This allows you to set a fallback for where webpack should look for modules.
          // We placed these paths second because we want `node_modules` to "win"
          // if there are any conflicts. This matches Node resolution mechanism.
          // https://github.com/facebook/create-react-app/issues/253
          modules: ['node_modules', paths.appNodeModules].concat(
            modules.additionalModulePaths || [],
          ),
          // These are the reasonable defaults supported by the Node ecosystem.
          // We also include JSX as a common component filename extension to support
          // some tools, although we do not recommend using it, see:
          // https://github.com/facebook/create-react-app/issues/290
          // `web` extension prefixes have been added for better support
          // for React Native Web.
          extensions: paths.moduleFileExtensions
            .map((ext) => `.${ext}`)
            .filter((ext) => useTypeScript || !ext.includes('ts')),
          alias: {
            // Support React Native Web
            // https://www.smashingmagazine.com/2016/08/a-glimpse-into-the-future-with-react-native-for-web/
            'react-native': 'react-native-web',
            // Allows for better profiling with ReactDevTools
            ...(isEnvProductionProfile && {
              'react-dom$': 'react-dom/profiling',
              'scheduler/tracing': 'scheduler/tracing-profiling',
            }),
            ...(modules.webpackAliases || {}),
          },
          plugins: [
            // Adds support for installing with Plug'n'Play, leading to faster installs and adding
            // guards against forgotten dependencies and such.
            PnpWebpackPlugin,
            // Prevents users from importing files from outside of src/ (or node_modules/).
            // This often causes confusion because we only process files within src/ with babel.
            // To fix this, we prevent you from importing files out of src/ -- if you'd like to,
            // please link the files into your node_modules/ and let module-resolution kick in.
            // Make sure your source files are compiled, as they will not be processed in any way.
            new ModuleScopePlugin(paths.appSrc, [paths.appPackageJson]),
          ],
        },
        resolveLoader: {
          plugins: [
            // Also related to Plug'n'Play, but this time it tells webpack to load its loaders
            // from the current package.
            PnpWebpackPlugin.moduleLoader(module),
          ],
        },
        module: {
          strictExportPresence: true,
          rules: [
            // Disable require.ensure as it's not a standard language feature.
            {parser: {requireEnsure: false}},
    
            // First, run the linter.
            // It's important to do this before Babel processes the JS.
            {
              test: /\.(js|mjs|jsx|ts|tsx)$/,
              enforce: 'pre',
              use: [
                {
                  options: {
                    cache: true,
                    formatter: require.resolve('react-dev-utils/eslintFormatter'),
                    eslintPath: require.resolve('eslint'),
                    resolvePluginsRelativeTo: __dirname,
                  },
                  loader: require.resolve('eslint-loader'),
                },
              ],
              include: paths.appSrc,
            },
            {
              // "oneOf" will traverse all following loaders until one will
              // match the requirements. When no loader matches it will fall
              // back to the "file" loader at the end of the loader list.
              oneOf: [
                // "url" loader works like "file" loader except that it embeds assets
                // smaller than specified limit in bytes as data URLs to avoid requests.
                // A missing `test` is equivalent to a match.
                {
                  test: [/\.bmp$/, /\.gif$/, /\.jpe?g$/, /\.png$/],
                  loader: require.resolve('url-loader'),
                  options: {
                    limit: imageInlineSizeLimit,
                    name: 'static/media/[name].[hash:8].[ext]',
                  },
                },
                // Process application JS with Babel.
                // The preset includes JSX, Flow, TypeScript, and some ESnext features.
                {
                  test: /\.(js|mjs|jsx|ts|tsx)$/,
                  include: paths.appSrc,
                  loader: require.resolve('babel-loader'),
                  options: {
                    customize: require.resolve(
                      'babel-preset-react-app/webpack-overrides',
                    ),
    
                    presets: [
                      ['module:metro-react-native-babel-preset'],
                      ['react-app'],
                    ],
                    plugins: [
                      [
                        require.resolve('babel-plugin-named-asset-import'),
                        {
                          loaderMap: {
                            svg: {
                              ReactComponent:
                                '@svgr/webpack?-svgo,+titleProp,+ref![path]',
                            },
                          },
                        },
                      ],
                      [
                        'module-resolver',
                        {
                          alias: {
                            '^react-native$': 'react-native-web',
                          },
                        },
                      ],
                    ],
                    // This is a feature of `babel-loader` for webpack (not Babel itself).
                    // It enables caching results in ./node_modules/.cache/babel-loader/
                    // directory for faster rebuilds.
                    cacheDirectory: true,
                    // See #6846 for context on why cacheCompression is disabled
                    cacheCompression: false,
                    compact: isEnvProduction,
                  },
                },
                // Process any JS outside of the app with Babel.
                // Unlike the application JS, we only compile the standard ES features.
                {
                  test: /\.(js|mjs)$/,
                  exclude: /@babel(?:\/|\\{1,2})runtime/,
                  loader: require.resolve('babel-loader'),
                  options: {
                    babelrc: false,
                    configFile: false,
                    compact: false,
                    presets: [
                      [
                        require.resolve('babel-preset-react-app/dependencies'),
                        {helpers: true},
                      ],
                    ],
                    cacheDirectory: true,
                    plugins: [
                      ["@babel/plugin-transform-flow-strip-types"],
                      ["@babel/plugin-proposal-class-properties"]
                      [
                        'module-resolver',
                        {
                          alias: {
                            '^react-native$': 'react-native-web',
                          },
                        },
                      ],
                    ],
                    // See #6846 for context on why cacheCompression is disabled
                    cacheCompression: false,
    
                    // Babel sourcemaps are needed for debugging into node_modules
                    // code.  Without the options below, debuggers like VSCode
                    // show incorrect code and set breakpoints on the wrong lines.
                    sourceMaps: shouldUseSourceMap,
                    inputSourceMap: shouldUseSourceMap,
                  },
                },
                // "postcss" loader applies autoprefixer to our CSS.
                // "css" loader resolves paths in CSS and adds assets as dependencies.
                // "style" loader turns CSS into JS modules that inject <style> tags.
                // In production, we use MiniCSSExtractPlugin to extract that CSS
                // to a file, but in development "style" loader enables hot editing
                // of CSS.
                // By default we support CSS Modules with the extension .module.css
                {
                  test: cssRegex,
                  exclude: cssModuleRegex,
                  use: getStyleLoaders({
                    importLoaders: 1,
                    sourceMap: isEnvProduction && shouldUseSourceMap,
                  }),
                  // Don't consider CSS imports dead code even if the
                  // containing package claims to have no side effects.
                  // Remove this when webpack adds a warning or an error for this.
                  // See https://github.com/webpack/webpack/issues/6571
                  sideEffects: true,
                },
                // Adds support for CSS Modules (https://github.com/css-modules/css-modules)
                // using the extension .module.css
                {
                  test: cssModuleRegex,
                  use: getStyleLoaders({
                    importLoaders: 1,
                    sourceMap: isEnvProduction && shouldUseSourceMap,
                    modules: {
                      getLocalIdent: getCSSModuleLocalIdent,
                    },
                  }),
                },
                // Opt-in support for SASS (using .scss or .sass extensions).
                // By default we support SASS Modules with the
                // extensions .module.scss or .module.sass
                {
                  test: sassRegex,
                  exclude: sassModuleRegex,
                  use: getStyleLoaders(
                    {
                      importLoaders: 3,
                      sourceMap: isEnvProduction && shouldUseSourceMap,
                    },
                    'sass-loader',
                  ),
                  // Don't consider CSS imports dead code even if the
                  // containing package claims to have no side effects.
                  // Remove this when webpack adds a warning or an error for this.
                  // See https://github.com/webpack/webpack/issues/6571
                  sideEffects: true,
                },
                // Adds support for CSS Modules, but using SASS
                // using the extension .module.scss or .module.sass
                {
                  test: sassModuleRegex,
                  use: getStyleLoaders(
                    {
                      importLoaders: 3,
                      sourceMap: isEnvProduction && shouldUseSourceMap,
                      modules: {
                        getLocalIdent: getCSSModuleLocalIdent,
                      },
                    },
                    'sass-loader',
                  ),
                },
                // "file" loader makes sure those assets get served by WebpackDevServer.
                // When you `import` an asset, you get its (virtual) filename.
                // In production, they would get copied to the `build` folder.
                // This loader doesn't use a "test" so it will catch all modules
                // that fall through the other loaders.
                {
                  loader: require.resolve('file-loader'),
                  // Exclude `js` files to keep "css" loader working as it injects
                  // its runtime that would otherwise be processed through "file" loader.
                  // Also exclude `html` and `json` extensions so they get processed
                  // by webpacks internal loaders.
                  exclude: [/\.(js|mjs|jsx|ts|tsx)$/, /\.html$/, /\.json$/],
                  options: {
                    name: 'static/media/[name].[hash:8].[ext]',
                  },
                },
                // ** STOP ** Are you adding a new loader?
                // Make sure to add the new loader(s) before the "file" loader.
              ],
            },
          ],
        },
        plugins: [
          // Generates an `index.html` file with the <script> injected.
          new HtmlWebpackPlugin(
            Object.assign(
              {},
              {
                inject: true,
                template: paths.appHtml,
              },
              isEnvProduction
                ? {
                    minify: {
                      removeComments: true,
                      collapseWhitespace: true,
                      removeRedundantAttributes: true,
                      useShortDoctype: true,
                      removeEmptyAttributes: true,
                      removeStyleLinkTypeAttributes: true,
                      keepClosingSlash: true,
                      minifyJS: true,
                      minifyCSS: true,
                      minifyURLs: true,
                    },
                  }
                : undefined,
            ),
          ),
          // Inlines the webpack runtime script. This script is too small to warrant
          // a network request.
          // https://github.com/facebook/create-react-app/issues/5358
          isEnvProduction &&
            shouldInlineRuntimeChunk &&
            new InlineChunkHtmlPlugin(HtmlWebpackPlugin, [/runtime-.+[.]js/]),
          // Makes some environment variables available in index.html.
          // The public URL is available as %%PUBLIC_URL%% in index.html, e.g.:
          // <link rel="icon" href="%%PUBLIC_URL%%/favicon.ico">
          // It will be an empty string unless you specify "homepage"
          // in `package.json`, in which case it will be the pathname of that URL.
          new InterpolateHtmlPlugin(HtmlWebpackPlugin, env.raw),
          // This gives some necessary context to module not found errors, such as
          // the requesting resource.
          new ModuleNotFoundPlugin(paths.appPath),
          // Makes some environment variables available to the JS code, for example:
          // if (process.env.NODE_ENV === 'production') { ... }. See `./env.js`.
          // It is absolutely essential that NODE_ENV is set to production
          // during a production build.
          // Otherwise React will be compiled in the very slow development mode.
          new webpack.DefinePlugin(env.stringified),
          // This is necessary to emit hot updates (currently CSS only):
          isEnvDevelopment && new webpack.HotModuleReplacementPlugin(),
          // Watcher doesn't work well if you mistype casing in a path so we use
          // a plugin that prints an error when you attempt to do this.
          // See https://github.com/facebook/create-react-app/issues/240
          isEnvDevelopment && new CaseSensitivePathsPlugin(),
          // If you require a missing module and then `npm install` it, you still have
          // to restart the development server for webpack to discover it. This plugin
          // makes the discovery automatic so you don't have to restart.
          // See https://github.com/facebook/create-react-app/issues/186
          isEnvDevelopment &&
            new WatchMissingNodeModulesPlugin(paths.appNodeModules),
          isEnvProduction &&
            new MiniCssExtractPlugin({
              // Options similar to the same options in webpackOptions.output
              // both options are optional
              filename: 'static/css/[name].[contenthash:8].css',
              chunkFilename: 'static/css/[name].[contenthash:8].chunk.css',
            }),
          // Generate an asset manifest file with the following content:
          // - "files" key: Mapping of all asset filenames to their corresponding
          //   output file so that tools can pick it up without having to parse
          //   `index.html`
          // - "entrypoints" key: Array of files which are included in `index.html`,
          //   can be used to reconstruct the HTML if necessary
          new ManifestPlugin({
            fileName: 'asset-manifest.json',
            publicPath: paths.publicUrlOrPath,
            generate: (seed, files, entrypoints) => {
              const manifestFiles = files.reduce((manifest, file) => {
                manifest[file.name] = file.path;
                return manifest;
              }, seed);
              const entrypointFiles = entrypoints.main.filter(
                (fileName) => !fileName.endsWith('.map'),
              );
    
              return {
                files: manifestFiles,
                entrypoints: entrypointFiles,
              };
            },
          }),
          // Moment.js is an extremely popular library that bundles large locale files
          // by default due to how webpack interprets its code. This is a practical
          // solution that requires the user to opt into importing specific locales.
          // https://github.com/jmblog/how-to-optimize-momentjs-with-webpack
          // You can remove this if you don't use Moment.js:
          new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/),
          // Generate a service worker script that will precache, and keep up to date,
          // the HTML & assets that are part of the webpack build.
          isEnvProduction &&
            new WorkboxWebpackPlugin.GenerateSW({
              clientsClaim: true,
              exclude: [/\.map$/, /asset-manifest\.json$/],
              importWorkboxFrom: 'cdn',
              navigateFallback: paths.publicUrlOrPath + 'index.html',
              navigateFallbackBlacklist: [
                // Exclude URLs starting with /_, as they're likely an API call
                new RegExp('^/_'),
                // Exclude any URLs whose last part seems to be a file extension
                // as they're likely a resource and not a SPA route.
                // URLs containing a "?" character won't be blacklisted as they're likely
                // a route with query params (e.g. auth callbacks).
                new RegExp('/[^/?]+\\.[^/]+$'),
              ],
            }),
          // TypeScript type checking
          useTypeScript &&
            new ForkTsCheckerWebpackPlugin({
              typescript: resolve.sync('typescript', {
                basedir: paths.appNodeModules,
              }),
              async: isEnvDevelopment,
              useTypescriptIncrementalApi: true,
              checkSyntacticErrors: true,
              resolveModuleNameModule: process.versions.pnp
                ? `${__dirname}/pnpTs.js`
                : undefined,
              resolveTypeReferenceDirectiveModule: process.versions.pnp
                ? `${__dirname}/pnpTs.js`
                : undefined,
              tsconfig: paths.appTsConfig,
              reportFiles: [
                '**',
                '!**/__tests__/**',
                '!**/?(*.)(spec|test).*',
                '!**/src/setupProxy.*',
                '!**/src/setupTests.*',
              ],
              silent: true,
              // The formatter is invoked directly in WebpackDevServerUtils during development
              formatter: isEnvProduction ? typescriptFormatter : undefined,
            }),
        ].filter(Boolean),
        // Some libraries import Node modules but don't use them in the browser.
        // Tell webpack to provide empty mocks for them so importing them works.
        node: {
          module: 'empty',
          dgram: 'empty',
          dns: 'mock',
          fs: 'empty',
          http2: 'empty',
          net: 'empty',
          tls: 'empty',
          child_process: 'empty',
        },
        // Turn off performance processing because we utilize
        // our own hints via the FileSizeReporter
        performance: false,
      };
    };
    

    Dont forget to install both plugins :

    • “@babel/plugin-transform-flow-strip-types”
    • “@babel/plugin-proposal-class-properties”

    New Error 👍

    Failed to compile.
    
    ./node_modules/react-native-gesture-handler/DrawerLayout.js
    SyntaxError: /Users/chichke/Documents/Work/medflix/node_modules/react-native-gesture-handler/DrawerLayout.js: Unexpected token, expected "," (381:25)
    
      379 | 
      380 |     return (
    > 381 |       <TapGestureHandler onHandlerStateChange={this._onTapHandlerStateChange}>
          |                          ^
      382 |         <Animated.View
      383 |           pointerEvents={this._drawerShown ? 'auto' : 'none'}
      384 |           ref={this._pointerEventsView}
    

    Any help would be greatly appreciated

  2. @chichke
    I’ve added a preset module and It solved. thanks.

    // Process any JS outside of the app with Babel.
    // Unlike the application JS, we only compile the standard ES features.
     {
           test: /\.(js|mjs)$/,
           exclude: /@babel(?:\/|\\{1,2})runtime/,
           loader: require.resolve('babel-loader'),
           options: {
                babelrc: false,
                configFile: false,
                compact: false,
                presets: [
                      ['module:metro-react-native-babel-preset'], // Add this line,
                      [
                        require.resolve('babel-preset-react-app/dependencies'),
                        {helpers: true},
                      ],
                    ],
                cacheDirectory: true,
                plugins: [
                      ["@babel/plugin-transform-flow-strip-types"],
                      ["@babel/plugin-proposal-class-properties"]
                      [
                        'module-resolver',
                        {
                          alias: {
                            '^react-native$': 'react-native-web',
                          },
                        },
                      ],
                    ],
               // See #6846 for context on why cacheCompression is disabled
               cacheCompression: false,
    
                // Babel sourcemaps are needed for debugging into node_modules
                // code.  Without the options below, debuggers like VSCode
                // show incorrect code and set breakpoints on the wrong lines.
                sourceMaps: shouldUseSourceMap,
                inputSourceMap: shouldUseSourceMap,
              },
    },```