Webpack 3.10.0 cant minify the line: return [`${new Date().toISOString()} Twilsock...











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I am having a hard time completely understanding Webpack, so this might be a terrible question.



I have recently ejected from the create-react-app. I get the error:




Failed to minify the code from this file:




./node_modules/twilsock/lib/logger.js:5 


My webpack config:






'use strict';

//...
module.exports = {
// Don't attempt to continue if there are any errors.
bail: true,
// We generate sourcemaps in production. This is slow but gives good results.
// You can exclude the *.map files from the build during deployment.
devtool: shouldUseSourceMap ? 'source-map' : false,
// In production, we only want to load the polyfills and the app code.
entry: [require.resolve('./polyfills'), paths.appIndexJs],
output: {
// The build folder.
path: paths.appBuild,
// Generated JS file names (with nested folders).
// There will be one main bundle, and one file per asynchronous chunk.
// We don't currently advertise code splitting but Webpack supports it.
filename: 'static/js/[name].[chunkhash:8].js',
chunkFilename: 'static/js/[name].[chunkhash:8].chunk.js',
// We inferred the "public path" (such as / or /my-project) from homepage.
publicPath: publicPath,
// Point sourcemap entries to original disk location (format as URL on Windows)
devtoolModuleFilenameTemplate: info =>
path
.relative(paths.appSrc, info.absoluteResourcePath)
.replace(/\/g, '/'),
},
resolve: {
mainFields: ['main'],
// 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/facebookincubator/create-react-app/issues/253
modules: ['node_modules', paths.appNodeModules].concat(
// It is guaranteed to exist because we tweak it in `env.js`
process.env.NODE_PATH.split(path.delimiter).filter(Boolean)
),
// 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/facebookincubator/create-react-app/issues/290
// `web` extension prefixes have been added for better support
// for React Native Web.
extensions: ['.web.js', '.mjs', '.js', '.json', '.web.jsx', '.jsx'],
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',
},
plugins: [
// 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]),
],
},
module: {
strictExportPresence: true,
rules: [
// TODO: Disable require.ensure as it's not a standard language feature.
// We are waiting for https://github.com/facebookincubator/create-react-app/issues/2176.
// { parser: { requireEnsure: false } },

// First, run the linter.
// It's important to do this before Babel processes the JS.
{
test: /.(js|jsx|mjs)$/,
enforce: 'pre',
use: [
{
options: {
formatter: eslintFormatter,
eslintPath: require.resolve('eslint'),

},
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 just like "file" loader but it also embeds
// assets smaller than specified size as data URLs to avoid requests.
{
test: [/.bmp$/, /.gif$/, /.jpe?g$/, /.png$/],
loader: require.resolve('url-loader'),
options: {
limit: 10000,
name: 'static/media/[name].[hash:8].[ext]',
},
},
// Process JS with Babel.
{
test: /.(js|jsx|mjs)$/,
include: paths.appSrc,
loader: require.resolve('babel-loader'),
options: {

compact: true,
},
},
// The notation here is somewhat confusing.
// "postcss" loader applies autoprefixer to our CSS.
// "css" loader resolves paths in CSS and adds assets as dependencies.
// "style" loader normally turns CSS into JS modules injecting <style>,
// but unlike in development configuration, we do something different.
// `ExtractTextPlugin` first applies the "postcss" and "css" loaders
// (second argument), then grabs the result CSS and puts it into a
// separate file in our build process. This way we actually ship
// a single CSS file in production instead of JS code injecting <style>
// tags. If you use code splitting, however, any async bundles will still
// use the "style" loader inside the async code so CSS from them won't be
// in the main CSS file.
{
test: /.css$/,
loader: ExtractTextPlugin.extract(
Object.assign(
{
fallback: {
loader: require.resolve('style-loader'),
options: {
hmr: false,
},
},
use: [
{
loader: require.resolve('css-loader'),
options: {
importLoaders: 1,
minimize: true,
sourceMap: shouldUseSourceMap,
},
},
{
loader: require.resolve('postcss-loader'),
options: {
// Necessary for external CSS imports to work
// https://github.com/facebookincubator/create-react-app/issues/2677
ident: 'postcss',
plugins: () => [
require('postcss-flexbugs-fixes'),
autoprefixer({
browsers: [
'>1%',
'last 4 versions',
'Firefox ESR',
'not ie < 9', // React doesn't support IE8 anyway
],
flexbox: 'no-2009',
}),
],
},
},
],
},
extractTextPluginOptions
)
),
// Note: this won't work without `new ExtractTextPlugin()` in `plugins`.
},
// "file" loader makes sure assets end up in the `build` folder.
// When you `import` an asset, you get its filename.
// This loader doesn't use a "test" so it will catch all modules
// that fall through the other loaders.
{
loader: require.resolve('file-loader'),
// Exclude `js` files to keep "css" loader working as it injects
// it's runtime that would otherwise processed through "file" loader.
// Also exclude `html` and `json` extensions so they get processed
// by webpacks internal loaders.
exclude: [/.(js|jsx|mjs)$/, /.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: [
// Makes some environment variables available in index.html.
// The public URL is available as %PUBLIC_URL% in index.html, e.g.:
// <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
// In production, 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(env.raw),
// Generates an `index.html` file with the <script> injected.
new HtmlWebpackPlugin({
inject: true,
template: paths.appHtml,
minify: {
removeComments: true,
collapseWhitespace: true,
removeRedundantAttributes: true,
useShortDoctype: true,
removeEmptyAttributes: true,
removeStyleLinkTypeAttributes: true,
keepClosingSlash: true,
minifyJS: true,
minifyCSS: true,
minifyURLs: true,
},
}),
// 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 was set to production here.
// Otherwise React will be compiled in the very slow development mode.
new webpack.DefinePlugin(env.stringified),
// Minify the code.
new webpack.optimize.UglifyJsPlugin({
compress: {
warnings: false,
// Disabled because of an issue with Uglify breaking seemingly valid code:
// https://github.com/facebookincubator/create-react-app/issues/2376
// Pending further investigation:
// https://github.com/mishoo/UglifyJS2/issues/2011
comparisons: false,
},
mangle: {
safari10: true,
},
output: {
comments: false,
// Turned on because emoji and regex is not minified properly using default
// https://github.com/facebookincubator/create-react-app/issues/2488
ascii_only: true,
},
sourceMap: shouldUseSourceMap,
}),
// Note: this won't work without ExtractTextPlugin.extract(..) in `loaders`.
new ExtractTextPlugin({
filename: cssFilename,
}),
// Generate a manifest file which contains a mapping of all asset filenames
// to their corresponding output file so that tools can pick it up without
// having to parse `index.html`.
new ManifestPlugin({
fileName: 'asset-manifest.json',
}),
// Generate a service worker script that will precache, and keep up to date,
// the HTML & assets that are part of the Webpack build.
new SWPrecacheWebpackPlugin({
// By default, a cache-busting query parameter is appended to requests
// used to populate the caches, to ensure the responses are fresh.
// If a URL is already hashed by Webpack, then there is no concern
// about it being stale, and the cache-busting can be skipped.
dontCacheBustUrlsMatching: /.w{8}./,
filename: 'service-worker.js',
logger(message) {
if (message.indexOf('Total precache size is') === 0) {
// This message occurs for every build and is a bit too noisy.
return;
}
if (message.indexOf('Skipping static resource') === 0) {
// This message obscures real errors so we ignore it.
// https://github.com/facebookincubator/create-react-app/issues/2612
return;
}
console.log(message);
},
minify: true,
// For unknown URLs, fallback to the index page
navigateFallback: publicUrl + '/index.html',
// Ignores URLs starting from /__ (useful for Firebase):
// https://github.com/facebookincubator/create-react-app/issues/2237#issuecomment-302693219
navigateFallbackWhitelist: [/^(?!/__).*/],
// Don't precache sourcemaps (they're large) and build asset manifest:
staticFileGlobsIgnorePatterns: [/.map$/, /asset-manifest.json$/],
}),
// 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$/, /moment$/),
],
// 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: {
dgram: 'empty',
fs: 'empty',
net: 'empty',
tls: 'empty',
child_process: 'empty',
},
};





My package:






"dependencies": {
"autoprefixer": "7.1.6",
"axios": "^0.18.0",
"babel-core": "6.26.0",
"babel-eslint": "7.2.3",
"babel-jest": "20.0.3",
"babel-loader": "7.1.2",
"babel-preset-react-app": "^3.1.1",
"babel-runtime": "6.26.0",
"bootstrap": "^4.1.3",
"case-sensitive-paths-webpack-plugin": "2.1.1",
"chalk": "1.1.3",
"css-loader": "0.28.7",
"date-fns": "^1.29.0",
"dotenv": "4.0.0",
"dotenv-expand": "4.2.0",
"emoji-mart": "^2.8.1",
"eslint": "4.10.0",
"eslint-config-react-app": "^2.1.0",
"eslint-loader": "1.9.0",
"eslint-plugin-flowtype": "2.39.1",
"eslint-plugin-import": "2.8.0",
"eslint-plugin-jsx-a11y": "5.1.1",
"eslint-plugin-react": "7.4.0",
"extract-text-webpack-plugin": "3.0.2",
"file-loader": "1.1.5",
"firebase": "^5.5.5",
"fs-extra": "3.0.1",
"giphy-js-sdk-core": "1.0.6",
"history": "^4.7.2",
"html-webpack-plugin": "2.29.0",
"jest": "20.0.4",
"lodash": "^4.17.10",
"moment": "^2.22.2",
"npm-run-all": "^4.1.3",
"object-assign": "4.1.1",
"postcss-flexbugs-fixes": "3.2.0",
"postcss-loader": "2.0.8",
"promise": "8.0.1",
"prop-types": "^15.6.2",
"raf": "3.4.0",
"react": "^16.6.1",
"react-detect-offline": "^2.1.2",
"react-dev-utils": "^5.0.1",
"react-dnd": "^5.0.0",
"react-dnd-html5-backend": "^5.0.1",
"react-dom": "^16.4.2",
"react-flip-move": "^3.0.3",
"react-giphy-select": "^1.0.3",
"react-intercom": "^1.0.14",
"react-pose": "3.1.0",
"react-redux": "^5.0.7",
"react-router": "^4.3.1",
"react-router-dom": "^4.3.1",
"react-stripe-elements": "^2.0.1",
"react-textarea-autosize": "^7.1.0-1",
"react-tooltip": "^3.8.4",
"react-transition-group": "^2.4.0",
"redux": "^4.0.0",
"redux-thunk": "^2.3.0",
"resolve": "1.6.0",
"sass-web-fonts": "^2.0.2",
"style-loader": "0.19.0",
"sw-precache-webpack-plugin": "0.11.4",
"twilio-chat": "3.1.0",
"url-loader": "0.6.2",
"webpack": "3.10.0",
"webpack-dev-server": "2.9.4",
"webpack-manifest-plugin": "1.3.2",
"whatwg-fetch": "2.0.3"
},
"devDependencies": {
"node-sass-chokidar": "^1.3.3"
},
"scripts": {
"build-css": "node-sass-chokidar --include-path ./src/styles --include-path ./node_modules src/styles/ -o src/styles/",
"watch-css": "npm run build-css && node-sass-chokidar --include-path ./src/styles --include-path ./node_modules src/styles/ -o src/styles --watch --recursive",
"start-js": "node scripts/start.js",
"start": "npm-run-all -p watch-css start-js",
"build": "npm run build-css && node scripts/build.js",
"test": "node scripts/test.js --env=jsdom"
},
"jest": {
"collectCoverageFrom": [
"src/**/*.{js,jsx,mjs}"
],
"setupFiles": [
"<rootDir>/config/polyfills.js"
],
"testMatch": [
"<rootDir>/src/**/__tests__/**/*.{js,jsx,mjs}",
"<rootDir>/src/**/?(*.)(spec|test).{js,jsx,mjs}"
],
"testEnvironment": "node",
"testURL": "http://localhost",
"transform": {
"^.+\.(js|jsx|mjs)$": "<rootDir>/node_modules/babel-jest",
"^.+\.css$": "<rootDir>/config/jest/cssTransform.js",
"^(?!.*\.(js|jsx|mjs|css|json)$)": "<rootDir>/config/jest/fileTransform.js"
},
"transformIgnorePatterns": [
"[/\\]node_modules[/\\].+\.(js|jsx|mjs)$"
],
"moduleNameMapper": {
"^react-native$": "react-native-web"
},
"moduleFileExtensions": [
"web.js",
"js",
"json",
"web.jsx",
"jsx",
"node",
"mjs"
]
},
"babel": {
"presets": [
"react-app"
]
},
"eslintConfig": {
"extends": "react-app"
}
}












share|improve this question


























    up vote
    0
    down vote

    favorite












    I am having a hard time completely understanding Webpack, so this might be a terrible question.



    I have recently ejected from the create-react-app. I get the error:




    Failed to minify the code from this file:




    ./node_modules/twilsock/lib/logger.js:5 


    My webpack config:






    'use strict';

    //...
    module.exports = {
    // Don't attempt to continue if there are any errors.
    bail: true,
    // We generate sourcemaps in production. This is slow but gives good results.
    // You can exclude the *.map files from the build during deployment.
    devtool: shouldUseSourceMap ? 'source-map' : false,
    // In production, we only want to load the polyfills and the app code.
    entry: [require.resolve('./polyfills'), paths.appIndexJs],
    output: {
    // The build folder.
    path: paths.appBuild,
    // Generated JS file names (with nested folders).
    // There will be one main bundle, and one file per asynchronous chunk.
    // We don't currently advertise code splitting but Webpack supports it.
    filename: 'static/js/[name].[chunkhash:8].js',
    chunkFilename: 'static/js/[name].[chunkhash:8].chunk.js',
    // We inferred the "public path" (such as / or /my-project) from homepage.
    publicPath: publicPath,
    // Point sourcemap entries to original disk location (format as URL on Windows)
    devtoolModuleFilenameTemplate: info =>
    path
    .relative(paths.appSrc, info.absoluteResourcePath)
    .replace(/\/g, '/'),
    },
    resolve: {
    mainFields: ['main'],
    // 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/facebookincubator/create-react-app/issues/253
    modules: ['node_modules', paths.appNodeModules].concat(
    // It is guaranteed to exist because we tweak it in `env.js`
    process.env.NODE_PATH.split(path.delimiter).filter(Boolean)
    ),
    // 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/facebookincubator/create-react-app/issues/290
    // `web` extension prefixes have been added for better support
    // for React Native Web.
    extensions: ['.web.js', '.mjs', '.js', '.json', '.web.jsx', '.jsx'],
    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',
    },
    plugins: [
    // 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]),
    ],
    },
    module: {
    strictExportPresence: true,
    rules: [
    // TODO: Disable require.ensure as it's not a standard language feature.
    // We are waiting for https://github.com/facebookincubator/create-react-app/issues/2176.
    // { parser: { requireEnsure: false } },

    // First, run the linter.
    // It's important to do this before Babel processes the JS.
    {
    test: /.(js|jsx|mjs)$/,
    enforce: 'pre',
    use: [
    {
    options: {
    formatter: eslintFormatter,
    eslintPath: require.resolve('eslint'),

    },
    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 just like "file" loader but it also embeds
    // assets smaller than specified size as data URLs to avoid requests.
    {
    test: [/.bmp$/, /.gif$/, /.jpe?g$/, /.png$/],
    loader: require.resolve('url-loader'),
    options: {
    limit: 10000,
    name: 'static/media/[name].[hash:8].[ext]',
    },
    },
    // Process JS with Babel.
    {
    test: /.(js|jsx|mjs)$/,
    include: paths.appSrc,
    loader: require.resolve('babel-loader'),
    options: {

    compact: true,
    },
    },
    // The notation here is somewhat confusing.
    // "postcss" loader applies autoprefixer to our CSS.
    // "css" loader resolves paths in CSS and adds assets as dependencies.
    // "style" loader normally turns CSS into JS modules injecting <style>,
    // but unlike in development configuration, we do something different.
    // `ExtractTextPlugin` first applies the "postcss" and "css" loaders
    // (second argument), then grabs the result CSS and puts it into a
    // separate file in our build process. This way we actually ship
    // a single CSS file in production instead of JS code injecting <style>
    // tags. If you use code splitting, however, any async bundles will still
    // use the "style" loader inside the async code so CSS from them won't be
    // in the main CSS file.
    {
    test: /.css$/,
    loader: ExtractTextPlugin.extract(
    Object.assign(
    {
    fallback: {
    loader: require.resolve('style-loader'),
    options: {
    hmr: false,
    },
    },
    use: [
    {
    loader: require.resolve('css-loader'),
    options: {
    importLoaders: 1,
    minimize: true,
    sourceMap: shouldUseSourceMap,
    },
    },
    {
    loader: require.resolve('postcss-loader'),
    options: {
    // Necessary for external CSS imports to work
    // https://github.com/facebookincubator/create-react-app/issues/2677
    ident: 'postcss',
    plugins: () => [
    require('postcss-flexbugs-fixes'),
    autoprefixer({
    browsers: [
    '>1%',
    'last 4 versions',
    'Firefox ESR',
    'not ie < 9', // React doesn't support IE8 anyway
    ],
    flexbox: 'no-2009',
    }),
    ],
    },
    },
    ],
    },
    extractTextPluginOptions
    )
    ),
    // Note: this won't work without `new ExtractTextPlugin()` in `plugins`.
    },
    // "file" loader makes sure assets end up in the `build` folder.
    // When you `import` an asset, you get its filename.
    // This loader doesn't use a "test" so it will catch all modules
    // that fall through the other loaders.
    {
    loader: require.resolve('file-loader'),
    // Exclude `js` files to keep "css" loader working as it injects
    // it's runtime that would otherwise processed through "file" loader.
    // Also exclude `html` and `json` extensions so they get processed
    // by webpacks internal loaders.
    exclude: [/.(js|jsx|mjs)$/, /.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: [
    // Makes some environment variables available in index.html.
    // The public URL is available as %PUBLIC_URL% in index.html, e.g.:
    // <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
    // In production, 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(env.raw),
    // Generates an `index.html` file with the <script> injected.
    new HtmlWebpackPlugin({
    inject: true,
    template: paths.appHtml,
    minify: {
    removeComments: true,
    collapseWhitespace: true,
    removeRedundantAttributes: true,
    useShortDoctype: true,
    removeEmptyAttributes: true,
    removeStyleLinkTypeAttributes: true,
    keepClosingSlash: true,
    minifyJS: true,
    minifyCSS: true,
    minifyURLs: true,
    },
    }),
    // 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 was set to production here.
    // Otherwise React will be compiled in the very slow development mode.
    new webpack.DefinePlugin(env.stringified),
    // Minify the code.
    new webpack.optimize.UglifyJsPlugin({
    compress: {
    warnings: false,
    // Disabled because of an issue with Uglify breaking seemingly valid code:
    // https://github.com/facebookincubator/create-react-app/issues/2376
    // Pending further investigation:
    // https://github.com/mishoo/UglifyJS2/issues/2011
    comparisons: false,
    },
    mangle: {
    safari10: true,
    },
    output: {
    comments: false,
    // Turned on because emoji and regex is not minified properly using default
    // https://github.com/facebookincubator/create-react-app/issues/2488
    ascii_only: true,
    },
    sourceMap: shouldUseSourceMap,
    }),
    // Note: this won't work without ExtractTextPlugin.extract(..) in `loaders`.
    new ExtractTextPlugin({
    filename: cssFilename,
    }),
    // Generate a manifest file which contains a mapping of all asset filenames
    // to their corresponding output file so that tools can pick it up without
    // having to parse `index.html`.
    new ManifestPlugin({
    fileName: 'asset-manifest.json',
    }),
    // Generate a service worker script that will precache, and keep up to date,
    // the HTML & assets that are part of the Webpack build.
    new SWPrecacheWebpackPlugin({
    // By default, a cache-busting query parameter is appended to requests
    // used to populate the caches, to ensure the responses are fresh.
    // If a URL is already hashed by Webpack, then there is no concern
    // about it being stale, and the cache-busting can be skipped.
    dontCacheBustUrlsMatching: /.w{8}./,
    filename: 'service-worker.js',
    logger(message) {
    if (message.indexOf('Total precache size is') === 0) {
    // This message occurs for every build and is a bit too noisy.
    return;
    }
    if (message.indexOf('Skipping static resource') === 0) {
    // This message obscures real errors so we ignore it.
    // https://github.com/facebookincubator/create-react-app/issues/2612
    return;
    }
    console.log(message);
    },
    minify: true,
    // For unknown URLs, fallback to the index page
    navigateFallback: publicUrl + '/index.html',
    // Ignores URLs starting from /__ (useful for Firebase):
    // https://github.com/facebookincubator/create-react-app/issues/2237#issuecomment-302693219
    navigateFallbackWhitelist: [/^(?!/__).*/],
    // Don't precache sourcemaps (they're large) and build asset manifest:
    staticFileGlobsIgnorePatterns: [/.map$/, /asset-manifest.json$/],
    }),
    // 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$/, /moment$/),
    ],
    // 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: {
    dgram: 'empty',
    fs: 'empty',
    net: 'empty',
    tls: 'empty',
    child_process: 'empty',
    },
    };





    My package:






    "dependencies": {
    "autoprefixer": "7.1.6",
    "axios": "^0.18.0",
    "babel-core": "6.26.0",
    "babel-eslint": "7.2.3",
    "babel-jest": "20.0.3",
    "babel-loader": "7.1.2",
    "babel-preset-react-app": "^3.1.1",
    "babel-runtime": "6.26.0",
    "bootstrap": "^4.1.3",
    "case-sensitive-paths-webpack-plugin": "2.1.1",
    "chalk": "1.1.3",
    "css-loader": "0.28.7",
    "date-fns": "^1.29.0",
    "dotenv": "4.0.0",
    "dotenv-expand": "4.2.0",
    "emoji-mart": "^2.8.1",
    "eslint": "4.10.0",
    "eslint-config-react-app": "^2.1.0",
    "eslint-loader": "1.9.0",
    "eslint-plugin-flowtype": "2.39.1",
    "eslint-plugin-import": "2.8.0",
    "eslint-plugin-jsx-a11y": "5.1.1",
    "eslint-plugin-react": "7.4.0",
    "extract-text-webpack-plugin": "3.0.2",
    "file-loader": "1.1.5",
    "firebase": "^5.5.5",
    "fs-extra": "3.0.1",
    "giphy-js-sdk-core": "1.0.6",
    "history": "^4.7.2",
    "html-webpack-plugin": "2.29.0",
    "jest": "20.0.4",
    "lodash": "^4.17.10",
    "moment": "^2.22.2",
    "npm-run-all": "^4.1.3",
    "object-assign": "4.1.1",
    "postcss-flexbugs-fixes": "3.2.0",
    "postcss-loader": "2.0.8",
    "promise": "8.0.1",
    "prop-types": "^15.6.2",
    "raf": "3.4.0",
    "react": "^16.6.1",
    "react-detect-offline": "^2.1.2",
    "react-dev-utils": "^5.0.1",
    "react-dnd": "^5.0.0",
    "react-dnd-html5-backend": "^5.0.1",
    "react-dom": "^16.4.2",
    "react-flip-move": "^3.0.3",
    "react-giphy-select": "^1.0.3",
    "react-intercom": "^1.0.14",
    "react-pose": "3.1.0",
    "react-redux": "^5.0.7",
    "react-router": "^4.3.1",
    "react-router-dom": "^4.3.1",
    "react-stripe-elements": "^2.0.1",
    "react-textarea-autosize": "^7.1.0-1",
    "react-tooltip": "^3.8.4",
    "react-transition-group": "^2.4.0",
    "redux": "^4.0.0",
    "redux-thunk": "^2.3.0",
    "resolve": "1.6.0",
    "sass-web-fonts": "^2.0.2",
    "style-loader": "0.19.0",
    "sw-precache-webpack-plugin": "0.11.4",
    "twilio-chat": "3.1.0",
    "url-loader": "0.6.2",
    "webpack": "3.10.0",
    "webpack-dev-server": "2.9.4",
    "webpack-manifest-plugin": "1.3.2",
    "whatwg-fetch": "2.0.3"
    },
    "devDependencies": {
    "node-sass-chokidar": "^1.3.3"
    },
    "scripts": {
    "build-css": "node-sass-chokidar --include-path ./src/styles --include-path ./node_modules src/styles/ -o src/styles/",
    "watch-css": "npm run build-css && node-sass-chokidar --include-path ./src/styles --include-path ./node_modules src/styles/ -o src/styles --watch --recursive",
    "start-js": "node scripts/start.js",
    "start": "npm-run-all -p watch-css start-js",
    "build": "npm run build-css && node scripts/build.js",
    "test": "node scripts/test.js --env=jsdom"
    },
    "jest": {
    "collectCoverageFrom": [
    "src/**/*.{js,jsx,mjs}"
    ],
    "setupFiles": [
    "<rootDir>/config/polyfills.js"
    ],
    "testMatch": [
    "<rootDir>/src/**/__tests__/**/*.{js,jsx,mjs}",
    "<rootDir>/src/**/?(*.)(spec|test).{js,jsx,mjs}"
    ],
    "testEnvironment": "node",
    "testURL": "http://localhost",
    "transform": {
    "^.+\.(js|jsx|mjs)$": "<rootDir>/node_modules/babel-jest",
    "^.+\.css$": "<rootDir>/config/jest/cssTransform.js",
    "^(?!.*\.(js|jsx|mjs|css|json)$)": "<rootDir>/config/jest/fileTransform.js"
    },
    "transformIgnorePatterns": [
    "[/\\]node_modules[/\\].+\.(js|jsx|mjs)$"
    ],
    "moduleNameMapper": {
    "^react-native$": "react-native-web"
    },
    "moduleFileExtensions": [
    "web.js",
    "js",
    "json",
    "web.jsx",
    "jsx",
    "node",
    "mjs"
    ]
    },
    "babel": {
    "presets": [
    "react-app"
    ]
    },
    "eslintConfig": {
    "extends": "react-app"
    }
    }












    share|improve this question
























      up vote
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      down vote

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      up vote
      0
      down vote

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      I am having a hard time completely understanding Webpack, so this might be a terrible question.



      I have recently ejected from the create-react-app. I get the error:




      Failed to minify the code from this file:




      ./node_modules/twilsock/lib/logger.js:5 


      My webpack config:






      'use strict';

      //...
      module.exports = {
      // Don't attempt to continue if there are any errors.
      bail: true,
      // We generate sourcemaps in production. This is slow but gives good results.
      // You can exclude the *.map files from the build during deployment.
      devtool: shouldUseSourceMap ? 'source-map' : false,
      // In production, we only want to load the polyfills and the app code.
      entry: [require.resolve('./polyfills'), paths.appIndexJs],
      output: {
      // The build folder.
      path: paths.appBuild,
      // Generated JS file names (with nested folders).
      // There will be one main bundle, and one file per asynchronous chunk.
      // We don't currently advertise code splitting but Webpack supports it.
      filename: 'static/js/[name].[chunkhash:8].js',
      chunkFilename: 'static/js/[name].[chunkhash:8].chunk.js',
      // We inferred the "public path" (such as / or /my-project) from homepage.
      publicPath: publicPath,
      // Point sourcemap entries to original disk location (format as URL on Windows)
      devtoolModuleFilenameTemplate: info =>
      path
      .relative(paths.appSrc, info.absoluteResourcePath)
      .replace(/\/g, '/'),
      },
      resolve: {
      mainFields: ['main'],
      // 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/facebookincubator/create-react-app/issues/253
      modules: ['node_modules', paths.appNodeModules].concat(
      // It is guaranteed to exist because we tweak it in `env.js`
      process.env.NODE_PATH.split(path.delimiter).filter(Boolean)
      ),
      // 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/facebookincubator/create-react-app/issues/290
      // `web` extension prefixes have been added for better support
      // for React Native Web.
      extensions: ['.web.js', '.mjs', '.js', '.json', '.web.jsx', '.jsx'],
      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',
      },
      plugins: [
      // 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]),
      ],
      },
      module: {
      strictExportPresence: true,
      rules: [
      // TODO: Disable require.ensure as it's not a standard language feature.
      // We are waiting for https://github.com/facebookincubator/create-react-app/issues/2176.
      // { parser: { requireEnsure: false } },

      // First, run the linter.
      // It's important to do this before Babel processes the JS.
      {
      test: /.(js|jsx|mjs)$/,
      enforce: 'pre',
      use: [
      {
      options: {
      formatter: eslintFormatter,
      eslintPath: require.resolve('eslint'),

      },
      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 just like "file" loader but it also embeds
      // assets smaller than specified size as data URLs to avoid requests.
      {
      test: [/.bmp$/, /.gif$/, /.jpe?g$/, /.png$/],
      loader: require.resolve('url-loader'),
      options: {
      limit: 10000,
      name: 'static/media/[name].[hash:8].[ext]',
      },
      },
      // Process JS with Babel.
      {
      test: /.(js|jsx|mjs)$/,
      include: paths.appSrc,
      loader: require.resolve('babel-loader'),
      options: {

      compact: true,
      },
      },
      // The notation here is somewhat confusing.
      // "postcss" loader applies autoprefixer to our CSS.
      // "css" loader resolves paths in CSS and adds assets as dependencies.
      // "style" loader normally turns CSS into JS modules injecting <style>,
      // but unlike in development configuration, we do something different.
      // `ExtractTextPlugin` first applies the "postcss" and "css" loaders
      // (second argument), then grabs the result CSS and puts it into a
      // separate file in our build process. This way we actually ship
      // a single CSS file in production instead of JS code injecting <style>
      // tags. If you use code splitting, however, any async bundles will still
      // use the "style" loader inside the async code so CSS from them won't be
      // in the main CSS file.
      {
      test: /.css$/,
      loader: ExtractTextPlugin.extract(
      Object.assign(
      {
      fallback: {
      loader: require.resolve('style-loader'),
      options: {
      hmr: false,
      },
      },
      use: [
      {
      loader: require.resolve('css-loader'),
      options: {
      importLoaders: 1,
      minimize: true,
      sourceMap: shouldUseSourceMap,
      },
      },
      {
      loader: require.resolve('postcss-loader'),
      options: {
      // Necessary for external CSS imports to work
      // https://github.com/facebookincubator/create-react-app/issues/2677
      ident: 'postcss',
      plugins: () => [
      require('postcss-flexbugs-fixes'),
      autoprefixer({
      browsers: [
      '>1%',
      'last 4 versions',
      'Firefox ESR',
      'not ie < 9', // React doesn't support IE8 anyway
      ],
      flexbox: 'no-2009',
      }),
      ],
      },
      },
      ],
      },
      extractTextPluginOptions
      )
      ),
      // Note: this won't work without `new ExtractTextPlugin()` in `plugins`.
      },
      // "file" loader makes sure assets end up in the `build` folder.
      // When you `import` an asset, you get its filename.
      // This loader doesn't use a "test" so it will catch all modules
      // that fall through the other loaders.
      {
      loader: require.resolve('file-loader'),
      // Exclude `js` files to keep "css" loader working as it injects
      // it's runtime that would otherwise processed through "file" loader.
      // Also exclude `html` and `json` extensions so they get processed
      // by webpacks internal loaders.
      exclude: [/.(js|jsx|mjs)$/, /.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: [
      // Makes some environment variables available in index.html.
      // The public URL is available as %PUBLIC_URL% in index.html, e.g.:
      // <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
      // In production, 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(env.raw),
      // Generates an `index.html` file with the <script> injected.
      new HtmlWebpackPlugin({
      inject: true,
      template: paths.appHtml,
      minify: {
      removeComments: true,
      collapseWhitespace: true,
      removeRedundantAttributes: true,
      useShortDoctype: true,
      removeEmptyAttributes: true,
      removeStyleLinkTypeAttributes: true,
      keepClosingSlash: true,
      minifyJS: true,
      minifyCSS: true,
      minifyURLs: true,
      },
      }),
      // 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 was set to production here.
      // Otherwise React will be compiled in the very slow development mode.
      new webpack.DefinePlugin(env.stringified),
      // Minify the code.
      new webpack.optimize.UglifyJsPlugin({
      compress: {
      warnings: false,
      // Disabled because of an issue with Uglify breaking seemingly valid code:
      // https://github.com/facebookincubator/create-react-app/issues/2376
      // Pending further investigation:
      // https://github.com/mishoo/UglifyJS2/issues/2011
      comparisons: false,
      },
      mangle: {
      safari10: true,
      },
      output: {
      comments: false,
      // Turned on because emoji and regex is not minified properly using default
      // https://github.com/facebookincubator/create-react-app/issues/2488
      ascii_only: true,
      },
      sourceMap: shouldUseSourceMap,
      }),
      // Note: this won't work without ExtractTextPlugin.extract(..) in `loaders`.
      new ExtractTextPlugin({
      filename: cssFilename,
      }),
      // Generate a manifest file which contains a mapping of all asset filenames
      // to their corresponding output file so that tools can pick it up without
      // having to parse `index.html`.
      new ManifestPlugin({
      fileName: 'asset-manifest.json',
      }),
      // Generate a service worker script that will precache, and keep up to date,
      // the HTML & assets that are part of the Webpack build.
      new SWPrecacheWebpackPlugin({
      // By default, a cache-busting query parameter is appended to requests
      // used to populate the caches, to ensure the responses are fresh.
      // If a URL is already hashed by Webpack, then there is no concern
      // about it being stale, and the cache-busting can be skipped.
      dontCacheBustUrlsMatching: /.w{8}./,
      filename: 'service-worker.js',
      logger(message) {
      if (message.indexOf('Total precache size is') === 0) {
      // This message occurs for every build and is a bit too noisy.
      return;
      }
      if (message.indexOf('Skipping static resource') === 0) {
      // This message obscures real errors so we ignore it.
      // https://github.com/facebookincubator/create-react-app/issues/2612
      return;
      }
      console.log(message);
      },
      minify: true,
      // For unknown URLs, fallback to the index page
      navigateFallback: publicUrl + '/index.html',
      // Ignores URLs starting from /__ (useful for Firebase):
      // https://github.com/facebookincubator/create-react-app/issues/2237#issuecomment-302693219
      navigateFallbackWhitelist: [/^(?!/__).*/],
      // Don't precache sourcemaps (they're large) and build asset manifest:
      staticFileGlobsIgnorePatterns: [/.map$/, /asset-manifest.json$/],
      }),
      // 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$/, /moment$/),
      ],
      // 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: {
      dgram: 'empty',
      fs: 'empty',
      net: 'empty',
      tls: 'empty',
      child_process: 'empty',
      },
      };





      My package:






      "dependencies": {
      "autoprefixer": "7.1.6",
      "axios": "^0.18.0",
      "babel-core": "6.26.0",
      "babel-eslint": "7.2.3",
      "babel-jest": "20.0.3",
      "babel-loader": "7.1.2",
      "babel-preset-react-app": "^3.1.1",
      "babel-runtime": "6.26.0",
      "bootstrap": "^4.1.3",
      "case-sensitive-paths-webpack-plugin": "2.1.1",
      "chalk": "1.1.3",
      "css-loader": "0.28.7",
      "date-fns": "^1.29.0",
      "dotenv": "4.0.0",
      "dotenv-expand": "4.2.0",
      "emoji-mart": "^2.8.1",
      "eslint": "4.10.0",
      "eslint-config-react-app": "^2.1.0",
      "eslint-loader": "1.9.0",
      "eslint-plugin-flowtype": "2.39.1",
      "eslint-plugin-import": "2.8.0",
      "eslint-plugin-jsx-a11y": "5.1.1",
      "eslint-plugin-react": "7.4.0",
      "extract-text-webpack-plugin": "3.0.2",
      "file-loader": "1.1.5",
      "firebase": "^5.5.5",
      "fs-extra": "3.0.1",
      "giphy-js-sdk-core": "1.0.6",
      "history": "^4.7.2",
      "html-webpack-plugin": "2.29.0",
      "jest": "20.0.4",
      "lodash": "^4.17.10",
      "moment": "^2.22.2",
      "npm-run-all": "^4.1.3",
      "object-assign": "4.1.1",
      "postcss-flexbugs-fixes": "3.2.0",
      "postcss-loader": "2.0.8",
      "promise": "8.0.1",
      "prop-types": "^15.6.2",
      "raf": "3.4.0",
      "react": "^16.6.1",
      "react-detect-offline": "^2.1.2",
      "react-dev-utils": "^5.0.1",
      "react-dnd": "^5.0.0",
      "react-dnd-html5-backend": "^5.0.1",
      "react-dom": "^16.4.2",
      "react-flip-move": "^3.0.3",
      "react-giphy-select": "^1.0.3",
      "react-intercom": "^1.0.14",
      "react-pose": "3.1.0",
      "react-redux": "^5.0.7",
      "react-router": "^4.3.1",
      "react-router-dom": "^4.3.1",
      "react-stripe-elements": "^2.0.1",
      "react-textarea-autosize": "^7.1.0-1",
      "react-tooltip": "^3.8.4",
      "react-transition-group": "^2.4.0",
      "redux": "^4.0.0",
      "redux-thunk": "^2.3.0",
      "resolve": "1.6.0",
      "sass-web-fonts": "^2.0.2",
      "style-loader": "0.19.0",
      "sw-precache-webpack-plugin": "0.11.4",
      "twilio-chat": "3.1.0",
      "url-loader": "0.6.2",
      "webpack": "3.10.0",
      "webpack-dev-server": "2.9.4",
      "webpack-manifest-plugin": "1.3.2",
      "whatwg-fetch": "2.0.3"
      },
      "devDependencies": {
      "node-sass-chokidar": "^1.3.3"
      },
      "scripts": {
      "build-css": "node-sass-chokidar --include-path ./src/styles --include-path ./node_modules src/styles/ -o src/styles/",
      "watch-css": "npm run build-css && node-sass-chokidar --include-path ./src/styles --include-path ./node_modules src/styles/ -o src/styles --watch --recursive",
      "start-js": "node scripts/start.js",
      "start": "npm-run-all -p watch-css start-js",
      "build": "npm run build-css && node scripts/build.js",
      "test": "node scripts/test.js --env=jsdom"
      },
      "jest": {
      "collectCoverageFrom": [
      "src/**/*.{js,jsx,mjs}"
      ],
      "setupFiles": [
      "<rootDir>/config/polyfills.js"
      ],
      "testMatch": [
      "<rootDir>/src/**/__tests__/**/*.{js,jsx,mjs}",
      "<rootDir>/src/**/?(*.)(spec|test).{js,jsx,mjs}"
      ],
      "testEnvironment": "node",
      "testURL": "http://localhost",
      "transform": {
      "^.+\.(js|jsx|mjs)$": "<rootDir>/node_modules/babel-jest",
      "^.+\.css$": "<rootDir>/config/jest/cssTransform.js",
      "^(?!.*\.(js|jsx|mjs|css|json)$)": "<rootDir>/config/jest/fileTransform.js"
      },
      "transformIgnorePatterns": [
      "[/\\]node_modules[/\\].+\.(js|jsx|mjs)$"
      ],
      "moduleNameMapper": {
      "^react-native$": "react-native-web"
      },
      "moduleFileExtensions": [
      "web.js",
      "js",
      "json",
      "web.jsx",
      "jsx",
      "node",
      "mjs"
      ]
      },
      "babel": {
      "presets": [
      "react-app"
      ]
      },
      "eslintConfig": {
      "extends": "react-app"
      }
      }












      share|improve this question













      I am having a hard time completely understanding Webpack, so this might be a terrible question.



      I have recently ejected from the create-react-app. I get the error:




      Failed to minify the code from this file:




      ./node_modules/twilsock/lib/logger.js:5 


      My webpack config:






      'use strict';

      //...
      module.exports = {
      // Don't attempt to continue if there are any errors.
      bail: true,
      // We generate sourcemaps in production. This is slow but gives good results.
      // You can exclude the *.map files from the build during deployment.
      devtool: shouldUseSourceMap ? 'source-map' : false,
      // In production, we only want to load the polyfills and the app code.
      entry: [require.resolve('./polyfills'), paths.appIndexJs],
      output: {
      // The build folder.
      path: paths.appBuild,
      // Generated JS file names (with nested folders).
      // There will be one main bundle, and one file per asynchronous chunk.
      // We don't currently advertise code splitting but Webpack supports it.
      filename: 'static/js/[name].[chunkhash:8].js',
      chunkFilename: 'static/js/[name].[chunkhash:8].chunk.js',
      // We inferred the "public path" (such as / or /my-project) from homepage.
      publicPath: publicPath,
      // Point sourcemap entries to original disk location (format as URL on Windows)
      devtoolModuleFilenameTemplate: info =>
      path
      .relative(paths.appSrc, info.absoluteResourcePath)
      .replace(/\/g, '/'),
      },
      resolve: {
      mainFields: ['main'],
      // 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/facebookincubator/create-react-app/issues/253
      modules: ['node_modules', paths.appNodeModules].concat(
      // It is guaranteed to exist because we tweak it in `env.js`
      process.env.NODE_PATH.split(path.delimiter).filter(Boolean)
      ),
      // 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/facebookincubator/create-react-app/issues/290
      // `web` extension prefixes have been added for better support
      // for React Native Web.
      extensions: ['.web.js', '.mjs', '.js', '.json', '.web.jsx', '.jsx'],
      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',
      },
      plugins: [
      // 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]),
      ],
      },
      module: {
      strictExportPresence: true,
      rules: [
      // TODO: Disable require.ensure as it's not a standard language feature.
      // We are waiting for https://github.com/facebookincubator/create-react-app/issues/2176.
      // { parser: { requireEnsure: false } },

      // First, run the linter.
      // It's important to do this before Babel processes the JS.
      {
      test: /.(js|jsx|mjs)$/,
      enforce: 'pre',
      use: [
      {
      options: {
      formatter: eslintFormatter,
      eslintPath: require.resolve('eslint'),

      },
      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 just like "file" loader but it also embeds
      // assets smaller than specified size as data URLs to avoid requests.
      {
      test: [/.bmp$/, /.gif$/, /.jpe?g$/, /.png$/],
      loader: require.resolve('url-loader'),
      options: {
      limit: 10000,
      name: 'static/media/[name].[hash:8].[ext]',
      },
      },
      // Process JS with Babel.
      {
      test: /.(js|jsx|mjs)$/,
      include: paths.appSrc,
      loader: require.resolve('babel-loader'),
      options: {

      compact: true,
      },
      },
      // The notation here is somewhat confusing.
      // "postcss" loader applies autoprefixer to our CSS.
      // "css" loader resolves paths in CSS and adds assets as dependencies.
      // "style" loader normally turns CSS into JS modules injecting <style>,
      // but unlike in development configuration, we do something different.
      // `ExtractTextPlugin` first applies the "postcss" and "css" loaders
      // (second argument), then grabs the result CSS and puts it into a
      // separate file in our build process. This way we actually ship
      // a single CSS file in production instead of JS code injecting <style>
      // tags. If you use code splitting, however, any async bundles will still
      // use the "style" loader inside the async code so CSS from them won't be
      // in the main CSS file.
      {
      test: /.css$/,
      loader: ExtractTextPlugin.extract(
      Object.assign(
      {
      fallback: {
      loader: require.resolve('style-loader'),
      options: {
      hmr: false,
      },
      },
      use: [
      {
      loader: require.resolve('css-loader'),
      options: {
      importLoaders: 1,
      minimize: true,
      sourceMap: shouldUseSourceMap,
      },
      },
      {
      loader: require.resolve('postcss-loader'),
      options: {
      // Necessary for external CSS imports to work
      // https://github.com/facebookincubator/create-react-app/issues/2677
      ident: 'postcss',
      plugins: () => [
      require('postcss-flexbugs-fixes'),
      autoprefixer({
      browsers: [
      '>1%',
      'last 4 versions',
      'Firefox ESR',
      'not ie < 9', // React doesn't support IE8 anyway
      ],
      flexbox: 'no-2009',
      }),
      ],
      },
      },
      ],
      },
      extractTextPluginOptions
      )
      ),
      // Note: this won't work without `new ExtractTextPlugin()` in `plugins`.
      },
      // "file" loader makes sure assets end up in the `build` folder.
      // When you `import` an asset, you get its filename.
      // This loader doesn't use a "test" so it will catch all modules
      // that fall through the other loaders.
      {
      loader: require.resolve('file-loader'),
      // Exclude `js` files to keep "css" loader working as it injects
      // it's runtime that would otherwise processed through "file" loader.
      // Also exclude `html` and `json` extensions so they get processed
      // by webpacks internal loaders.
      exclude: [/.(js|jsx|mjs)$/, /.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: [
      // Makes some environment variables available in index.html.
      // The public URL is available as %PUBLIC_URL% in index.html, e.g.:
      // <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
      // In production, 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(env.raw),
      // Generates an `index.html` file with the <script> injected.
      new HtmlWebpackPlugin({
      inject: true,
      template: paths.appHtml,
      minify: {
      removeComments: true,
      collapseWhitespace: true,
      removeRedundantAttributes: true,
      useShortDoctype: true,
      removeEmptyAttributes: true,
      removeStyleLinkTypeAttributes: true,
      keepClosingSlash: true,
      minifyJS: true,
      minifyCSS: true,
      minifyURLs: true,
      },
      }),
      // 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 was set to production here.
      // Otherwise React will be compiled in the very slow development mode.
      new webpack.DefinePlugin(env.stringified),
      // Minify the code.
      new webpack.optimize.UglifyJsPlugin({
      compress: {
      warnings: false,
      // Disabled because of an issue with Uglify breaking seemingly valid code:
      // https://github.com/facebookincubator/create-react-app/issues/2376
      // Pending further investigation:
      // https://github.com/mishoo/UglifyJS2/issues/2011
      comparisons: false,
      },
      mangle: {
      safari10: true,
      },
      output: {
      comments: false,
      // Turned on because emoji and regex is not minified properly using default
      // https://github.com/facebookincubator/create-react-app/issues/2488
      ascii_only: true,
      },
      sourceMap: shouldUseSourceMap,
      }),
      // Note: this won't work without ExtractTextPlugin.extract(..) in `loaders`.
      new ExtractTextPlugin({
      filename: cssFilename,
      }),
      // Generate a manifest file which contains a mapping of all asset filenames
      // to their corresponding output file so that tools can pick it up without
      // having to parse `index.html`.
      new ManifestPlugin({
      fileName: 'asset-manifest.json',
      }),
      // Generate a service worker script that will precache, and keep up to date,
      // the HTML & assets that are part of the Webpack build.
      new SWPrecacheWebpackPlugin({
      // By default, a cache-busting query parameter is appended to requests
      // used to populate the caches, to ensure the responses are fresh.
      // If a URL is already hashed by Webpack, then there is no concern
      // about it being stale, and the cache-busting can be skipped.
      dontCacheBustUrlsMatching: /.w{8}./,
      filename: 'service-worker.js',
      logger(message) {
      if (message.indexOf('Total precache size is') === 0) {
      // This message occurs for every build and is a bit too noisy.
      return;
      }
      if (message.indexOf('Skipping static resource') === 0) {
      // This message obscures real errors so we ignore it.
      // https://github.com/facebookincubator/create-react-app/issues/2612
      return;
      }
      console.log(message);
      },
      minify: true,
      // For unknown URLs, fallback to the index page
      navigateFallback: publicUrl + '/index.html',
      // Ignores URLs starting from /__ (useful for Firebase):
      // https://github.com/facebookincubator/create-react-app/issues/2237#issuecomment-302693219
      navigateFallbackWhitelist: [/^(?!/__).*/],
      // Don't precache sourcemaps (they're large) and build asset manifest:
      staticFileGlobsIgnorePatterns: [/.map$/, /asset-manifest.json$/],
      }),
      // 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$/, /moment$/),
      ],
      // 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: {
      dgram: 'empty',
      fs: 'empty',
      net: 'empty',
      tls: 'empty',
      child_process: 'empty',
      },
      };





      My package:






      "dependencies": {
      "autoprefixer": "7.1.6",
      "axios": "^0.18.0",
      "babel-core": "6.26.0",
      "babel-eslint": "7.2.3",
      "babel-jest": "20.0.3",
      "babel-loader": "7.1.2",
      "babel-preset-react-app": "^3.1.1",
      "babel-runtime": "6.26.0",
      "bootstrap": "^4.1.3",
      "case-sensitive-paths-webpack-plugin": "2.1.1",
      "chalk": "1.1.3",
      "css-loader": "0.28.7",
      "date-fns": "^1.29.0",
      "dotenv": "4.0.0",
      "dotenv-expand": "4.2.0",
      "emoji-mart": "^2.8.1",
      "eslint": "4.10.0",
      "eslint-config-react-app": "^2.1.0",
      "eslint-loader": "1.9.0",
      "eslint-plugin-flowtype": "2.39.1",
      "eslint-plugin-import": "2.8.0",
      "eslint-plugin-jsx-a11y": "5.1.1",
      "eslint-plugin-react": "7.4.0",
      "extract-text-webpack-plugin": "3.0.2",
      "file-loader": "1.1.5",
      "firebase": "^5.5.5",
      "fs-extra": "3.0.1",
      "giphy-js-sdk-core": "1.0.6",
      "history": "^4.7.2",
      "html-webpack-plugin": "2.29.0",
      "jest": "20.0.4",
      "lodash": "^4.17.10",
      "moment": "^2.22.2",
      "npm-run-all": "^4.1.3",
      "object-assign": "4.1.1",
      "postcss-flexbugs-fixes": "3.2.0",
      "postcss-loader": "2.0.8",
      "promise": "8.0.1",
      "prop-types": "^15.6.2",
      "raf": "3.4.0",
      "react": "^16.6.1",
      "react-detect-offline": "^2.1.2",
      "react-dev-utils": "^5.0.1",
      "react-dnd": "^5.0.0",
      "react-dnd-html5-backend": "^5.0.1",
      "react-dom": "^16.4.2",
      "react-flip-move": "^3.0.3",
      "react-giphy-select": "^1.0.3",
      "react-intercom": "^1.0.14",
      "react-pose": "3.1.0",
      "react-redux": "^5.0.7",
      "react-router": "^4.3.1",
      "react-router-dom": "^4.3.1",
      "react-stripe-elements": "^2.0.1",
      "react-textarea-autosize": "^7.1.0-1",
      "react-tooltip": "^3.8.4",
      "react-transition-group": "^2.4.0",
      "redux": "^4.0.0",
      "redux-thunk": "^2.3.0",
      "resolve": "1.6.0",
      "sass-web-fonts": "^2.0.2",
      "style-loader": "0.19.0",
      "sw-precache-webpack-plugin": "0.11.4",
      "twilio-chat": "3.1.0",
      "url-loader": "0.6.2",
      "webpack": "3.10.0",
      "webpack-dev-server": "2.9.4",
      "webpack-manifest-plugin": "1.3.2",
      "whatwg-fetch": "2.0.3"
      },
      "devDependencies": {
      "node-sass-chokidar": "^1.3.3"
      },
      "scripts": {
      "build-css": "node-sass-chokidar --include-path ./src/styles --include-path ./node_modules src/styles/ -o src/styles/",
      "watch-css": "npm run build-css && node-sass-chokidar --include-path ./src/styles --include-path ./node_modules src/styles/ -o src/styles --watch --recursive",
      "start-js": "node scripts/start.js",
      "start": "npm-run-all -p watch-css start-js",
      "build": "npm run build-css && node scripts/build.js",
      "test": "node scripts/test.js --env=jsdom"
      },
      "jest": {
      "collectCoverageFrom": [
      "src/**/*.{js,jsx,mjs}"
      ],
      "setupFiles": [
      "<rootDir>/config/polyfills.js"
      ],
      "testMatch": [
      "<rootDir>/src/**/__tests__/**/*.{js,jsx,mjs}",
      "<rootDir>/src/**/?(*.)(spec|test).{js,jsx,mjs}"
      ],
      "testEnvironment": "node",
      "testURL": "http://localhost",
      "transform": {
      "^.+\.(js|jsx|mjs)$": "<rootDir>/node_modules/babel-jest",
      "^.+\.css$": "<rootDir>/config/jest/cssTransform.js",
      "^(?!.*\.(js|jsx|mjs|css|json)$)": "<rootDir>/config/jest/fileTransform.js"
      },
      "transformIgnorePatterns": [
      "[/\\]node_modules[/\\].+\.(js|jsx|mjs)$"
      ],
      "moduleNameMapper": {
      "^react-native$": "react-native-web"
      },
      "moduleFileExtensions": [
      "web.js",
      "js",
      "json",
      "web.jsx",
      "jsx",
      "node",
      "mjs"
      ]
      },
      "babel": {
      "presets": [
      "react-app"
      ]
      },
      "eslintConfig": {
      "extends": "react-app"
      }
      }








      'use strict';

      //...
      module.exports = {
      // Don't attempt to continue if there are any errors.
      bail: true,
      // We generate sourcemaps in production. This is slow but gives good results.
      // You can exclude the *.map files from the build during deployment.
      devtool: shouldUseSourceMap ? 'source-map' : false,
      // In production, we only want to load the polyfills and the app code.
      entry: [require.resolve('./polyfills'), paths.appIndexJs],
      output: {
      // The build folder.
      path: paths.appBuild,
      // Generated JS file names (with nested folders).
      // There will be one main bundle, and one file per asynchronous chunk.
      // We don't currently advertise code splitting but Webpack supports it.
      filename: 'static/js/[name].[chunkhash:8].js',
      chunkFilename: 'static/js/[name].[chunkhash:8].chunk.js',
      // We inferred the "public path" (such as / or /my-project) from homepage.
      publicPath: publicPath,
      // Point sourcemap entries to original disk location (format as URL on Windows)
      devtoolModuleFilenameTemplate: info =>
      path
      .relative(paths.appSrc, info.absoluteResourcePath)
      .replace(/\/g, '/'),
      },
      resolve: {
      mainFields: ['main'],
      // 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/facebookincubator/create-react-app/issues/253
      modules: ['node_modules', paths.appNodeModules].concat(
      // It is guaranteed to exist because we tweak it in `env.js`
      process.env.NODE_PATH.split(path.delimiter).filter(Boolean)
      ),
      // 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/facebookincubator/create-react-app/issues/290
      // `web` extension prefixes have been added for better support
      // for React Native Web.
      extensions: ['.web.js', '.mjs', '.js', '.json', '.web.jsx', '.jsx'],
      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',
      },
      plugins: [
      // 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]),
      ],
      },
      module: {
      strictExportPresence: true,
      rules: [
      // TODO: Disable require.ensure as it's not a standard language feature.
      // We are waiting for https://github.com/facebookincubator/create-react-app/issues/2176.
      // { parser: { requireEnsure: false } },

      // First, run the linter.
      // It's important to do this before Babel processes the JS.
      {
      test: /.(js|jsx|mjs)$/,
      enforce: 'pre',
      use: [
      {
      options: {
      formatter: eslintFormatter,
      eslintPath: require.resolve('eslint'),

      },
      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 just like "file" loader but it also embeds
      // assets smaller than specified size as data URLs to avoid requests.
      {
      test: [/.bmp$/, /.gif$/, /.jpe?g$/, /.png$/],
      loader: require.resolve('url-loader'),
      options: {
      limit: 10000,
      name: 'static/media/[name].[hash:8].[ext]',
      },
      },
      // Process JS with Babel.
      {
      test: /.(js|jsx|mjs)$/,
      include: paths.appSrc,
      loader: require.resolve('babel-loader'),
      options: {

      compact: true,
      },
      },
      // The notation here is somewhat confusing.
      // "postcss" loader applies autoprefixer to our CSS.
      // "css" loader resolves paths in CSS and adds assets as dependencies.
      // "style" loader normally turns CSS into JS modules injecting <style>,
      // but unlike in development configuration, we do something different.
      // `ExtractTextPlugin` first applies the "postcss" and "css" loaders
      // (second argument), then grabs the result CSS and puts it into a
      // separate file in our build process. This way we actually ship
      // a single CSS file in production instead of JS code injecting <style>
      // tags. If you use code splitting, however, any async bundles will still
      // use the "style" loader inside the async code so CSS from them won't be
      // in the main CSS file.
      {
      test: /.css$/,
      loader: ExtractTextPlugin.extract(
      Object.assign(
      {
      fallback: {
      loader: require.resolve('style-loader'),
      options: {
      hmr: false,
      },
      },
      use: [
      {
      loader: require.resolve('css-loader'),
      options: {
      importLoaders: 1,
      minimize: true,
      sourceMap: shouldUseSourceMap,
      },
      },
      {
      loader: require.resolve('postcss-loader'),
      options: {
      // Necessary for external CSS imports to work
      // https://github.com/facebookincubator/create-react-app/issues/2677
      ident: 'postcss',
      plugins: () => [
      require('postcss-flexbugs-fixes'),
      autoprefixer({
      browsers: [
      '>1%',
      'last 4 versions',
      'Firefox ESR',
      'not ie < 9', // React doesn't support IE8 anyway
      ],
      flexbox: 'no-2009',
      }),
      ],
      },
      },
      ],
      },
      extractTextPluginOptions
      )
      ),
      // Note: this won't work without `new ExtractTextPlugin()` in `plugins`.
      },
      // "file" loader makes sure assets end up in the `build` folder.
      // When you `import` an asset, you get its filename.
      // This loader doesn't use a "test" so it will catch all modules
      // that fall through the other loaders.
      {
      loader: require.resolve('file-loader'),
      // Exclude `js` files to keep "css" loader working as it injects
      // it's runtime that would otherwise processed through "file" loader.
      // Also exclude `html` and `json` extensions so they get processed
      // by webpacks internal loaders.
      exclude: [/.(js|jsx|mjs)$/, /.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: [
      // Makes some environment variables available in index.html.
      // The public URL is available as %PUBLIC_URL% in index.html, e.g.:
      // <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
      // In production, 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(env.raw),
      // Generates an `index.html` file with the <script> injected.
      new HtmlWebpackPlugin({
      inject: true,
      template: paths.appHtml,
      minify: {
      removeComments: true,
      collapseWhitespace: true,
      removeRedundantAttributes: true,
      useShortDoctype: true,
      removeEmptyAttributes: true,
      removeStyleLinkTypeAttributes: true,
      keepClosingSlash: true,
      minifyJS: true,
      minifyCSS: true,
      minifyURLs: true,
      },
      }),
      // 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 was set to production here.
      // Otherwise React will be compiled in the very slow development mode.
      new webpack.DefinePlugin(env.stringified),
      // Minify the code.
      new webpack.optimize.UglifyJsPlugin({
      compress: {
      warnings: false,
      // Disabled because of an issue with Uglify breaking seemingly valid code:
      // https://github.com/facebookincubator/create-react-app/issues/2376
      // Pending further investigation:
      // https://github.com/mishoo/UglifyJS2/issues/2011
      comparisons: false,
      },
      mangle: {
      safari10: true,
      },
      output: {
      comments: false,
      // Turned on because emoji and regex is not minified properly using default
      // https://github.com/facebookincubator/create-react-app/issues/2488
      ascii_only: true,
      },
      sourceMap: shouldUseSourceMap,
      }),
      // Note: this won't work without ExtractTextPlugin.extract(..) in `loaders`.
      new ExtractTextPlugin({
      filename: cssFilename,
      }),
      // Generate a manifest file which contains a mapping of all asset filenames
      // to their corresponding output file so that tools can pick it up without
      // having to parse `index.html`.
      new ManifestPlugin({
      fileName: 'asset-manifest.json',
      }),
      // Generate a service worker script that will precache, and keep up to date,
      // the HTML & assets that are part of the Webpack build.
      new SWPrecacheWebpackPlugin({
      // By default, a cache-busting query parameter is appended to requests
      // used to populate the caches, to ensure the responses are fresh.
      // If a URL is already hashed by Webpack, then there is no concern
      // about it being stale, and the cache-busting can be skipped.
      dontCacheBustUrlsMatching: /.w{8}./,
      filename: 'service-worker.js',
      logger(message) {
      if (message.indexOf('Total precache size is') === 0) {
      // This message occurs for every build and is a bit too noisy.
      return;
      }
      if (message.indexOf('Skipping static resource') === 0) {
      // This message obscures real errors so we ignore it.
      // https://github.com/facebookincubator/create-react-app/issues/2612
      return;
      }
      console.log(message);
      },
      minify: true,
      // For unknown URLs, fallback to the index page
      navigateFallback: publicUrl + '/index.html',
      // Ignores URLs starting from /__ (useful for Firebase):
      // https://github.com/facebookincubator/create-react-app/issues/2237#issuecomment-302693219
      navigateFallbackWhitelist: [/^(?!/__).*/],
      // Don't precache sourcemaps (they're large) and build asset manifest:
      staticFileGlobsIgnorePatterns: [/.map$/, /asset-manifest.json$/],
      }),
      // 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$/, /moment$/),
      ],
      // 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: {
      dgram: 'empty',
      fs: 'empty',
      net: 'empty',
      tls: 'empty',
      child_process: 'empty',
      },
      };





      'use strict';

      //...
      module.exports = {
      // Don't attempt to continue if there are any errors.
      bail: true,
      // We generate sourcemaps in production. This is slow but gives good results.
      // You can exclude the *.map files from the build during deployment.
      devtool: shouldUseSourceMap ? 'source-map' : false,
      // In production, we only want to load the polyfills and the app code.
      entry: [require.resolve('./polyfills'), paths.appIndexJs],
      output: {
      // The build folder.
      path: paths.appBuild,
      // Generated JS file names (with nested folders).
      // There will be one main bundle, and one file per asynchronous chunk.
      // We don't currently advertise code splitting but Webpack supports it.
      filename: 'static/js/[name].[chunkhash:8].js',
      chunkFilename: 'static/js/[name].[chunkhash:8].chunk.js',
      // We inferred the "public path" (such as / or /my-project) from homepage.
      publicPath: publicPath,
      // Point sourcemap entries to original disk location (format as URL on Windows)
      devtoolModuleFilenameTemplate: info =>
      path
      .relative(paths.appSrc, info.absoluteResourcePath)
      .replace(/\/g, '/'),
      },
      resolve: {
      mainFields: ['main'],
      // 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/facebookincubator/create-react-app/issues/253
      modules: ['node_modules', paths.appNodeModules].concat(
      // It is guaranteed to exist because we tweak it in `env.js`
      process.env.NODE_PATH.split(path.delimiter).filter(Boolean)
      ),
      // 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/facebookincubator/create-react-app/issues/290
      // `web` extension prefixes have been added for better support
      // for React Native Web.
      extensions: ['.web.js', '.mjs', '.js', '.json', '.web.jsx', '.jsx'],
      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',
      },
      plugins: [
      // 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]),
      ],
      },
      module: {
      strictExportPresence: true,
      rules: [
      // TODO: Disable require.ensure as it's not a standard language feature.
      // We are waiting for https://github.com/facebookincubator/create-react-app/issues/2176.
      // { parser: { requireEnsure: false } },

      // First, run the linter.
      // It's important to do this before Babel processes the JS.
      {
      test: /.(js|jsx|mjs)$/,
      enforce: 'pre',
      use: [
      {
      options: {
      formatter: eslintFormatter,
      eslintPath: require.resolve('eslint'),

      },
      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 just like "file" loader but it also embeds
      // assets smaller than specified size as data URLs to avoid requests.
      {
      test: [/.bmp$/, /.gif$/, /.jpe?g$/, /.png$/],
      loader: require.resolve('url-loader'),
      options: {
      limit: 10000,
      name: 'static/media/[name].[hash:8].[ext]',
      },
      },
      // Process JS with Babel.
      {
      test: /.(js|jsx|mjs)$/,
      include: paths.appSrc,
      loader: require.resolve('babel-loader'),
      options: {

      compact: true,
      },
      },
      // The notation here is somewhat confusing.
      // "postcss" loader applies autoprefixer to our CSS.
      // "css" loader resolves paths in CSS and adds assets as dependencies.
      // "style" loader normally turns CSS into JS modules injecting <style>,
      // but unlike in development configuration, we do something different.
      // `ExtractTextPlugin` first applies the "postcss" and "css" loaders
      // (second argument), then grabs the result CSS and puts it into a
      // separate file in our build process. This way we actually ship
      // a single CSS file in production instead of JS code injecting <style>
      // tags. If you use code splitting, however, any async bundles will still
      // use the "style" loader inside the async code so CSS from them won't be
      // in the main CSS file.
      {
      test: /.css$/,
      loader: ExtractTextPlugin.extract(
      Object.assign(
      {
      fallback: {
      loader: require.resolve('style-loader'),
      options: {
      hmr: false,
      },
      },
      use: [
      {
      loader: require.resolve('css-loader'),
      options: {
      importLoaders: 1,
      minimize: true,
      sourceMap: shouldUseSourceMap,
      },
      },
      {
      loader: require.resolve('postcss-loader'),
      options: {
      // Necessary for external CSS imports to work
      // https://github.com/facebookincubator/create-react-app/issues/2677
      ident: 'postcss',
      plugins: () => [
      require('postcss-flexbugs-fixes'),
      autoprefixer({
      browsers: [
      '>1%',
      'last 4 versions',
      'Firefox ESR',
      'not ie < 9', // React doesn't support IE8 anyway
      ],
      flexbox: 'no-2009',
      }),
      ],
      },
      },
      ],
      },
      extractTextPluginOptions
      )
      ),
      // Note: this won't work without `new ExtractTextPlugin()` in `plugins`.
      },
      // "file" loader makes sure assets end up in the `build` folder.
      // When you `import` an asset, you get its filename.
      // This loader doesn't use a "test" so it will catch all modules
      // that fall through the other loaders.
      {
      loader: require.resolve('file-loader'),
      // Exclude `js` files to keep "css" loader working as it injects
      // it's runtime that would otherwise processed through "file" loader.
      // Also exclude `html` and `json` extensions so they get processed
      // by webpacks internal loaders.
      exclude: [/.(js|jsx|mjs)$/, /.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: [
      // Makes some environment variables available in index.html.
      // The public URL is available as %PUBLIC_URL% in index.html, e.g.:
      // <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
      // In production, 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(env.raw),
      // Generates an `index.html` file with the <script> injected.
      new HtmlWebpackPlugin({
      inject: true,
      template: paths.appHtml,
      minify: {
      removeComments: true,
      collapseWhitespace: true,
      removeRedundantAttributes: true,
      useShortDoctype: true,
      removeEmptyAttributes: true,
      removeStyleLinkTypeAttributes: true,
      keepClosingSlash: true,
      minifyJS: true,
      minifyCSS: true,
      minifyURLs: true,
      },
      }),
      // 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 was set to production here.
      // Otherwise React will be compiled in the very slow development mode.
      new webpack.DefinePlugin(env.stringified),
      // Minify the code.
      new webpack.optimize.UglifyJsPlugin({
      compress: {
      warnings: false,
      // Disabled because of an issue with Uglify breaking seemingly valid code:
      // https://github.com/facebookincubator/create-react-app/issues/2376
      // Pending further investigation:
      // https://github.com/mishoo/UglifyJS2/issues/2011
      comparisons: false,
      },
      mangle: {
      safari10: true,
      },
      output: {
      comments: false,
      // Turned on because emoji and regex is not minified properly using default
      // https://github.com/facebookincubator/create-react-app/issues/2488
      ascii_only: true,
      },
      sourceMap: shouldUseSourceMap,
      }),
      // Note: this won't work without ExtractTextPlugin.extract(..) in `loaders`.
      new ExtractTextPlugin({
      filename: cssFilename,
      }),
      // Generate a manifest file which contains a mapping of all asset filenames
      // to their corresponding output file so that tools can pick it up without
      // having to parse `index.html`.
      new ManifestPlugin({
      fileName: 'asset-manifest.json',
      }),
      // Generate a service worker script that will precache, and keep up to date,
      // the HTML & assets that are part of the Webpack build.
      new SWPrecacheWebpackPlugin({
      // By default, a cache-busting query parameter is appended to requests
      // used to populate the caches, to ensure the responses are fresh.
      // If a URL is already hashed by Webpack, then there is no concern
      // about it being stale, and the cache-busting can be skipped.
      dontCacheBustUrlsMatching: /.w{8}./,
      filename: 'service-worker.js',
      logger(message) {
      if (message.indexOf('Total precache size is') === 0) {
      // This message occurs for every build and is a bit too noisy.
      return;
      }
      if (message.indexOf('Skipping static resource') === 0) {
      // This message obscures real errors so we ignore it.
      // https://github.com/facebookincubator/create-react-app/issues/2612
      return;
      }
      console.log(message);
      },
      minify: true,
      // For unknown URLs, fallback to the index page
      navigateFallback: publicUrl + '/index.html',
      // Ignores URLs starting from /__ (useful for Firebase):
      // https://github.com/facebookincubator/create-react-app/issues/2237#issuecomment-302693219
      navigateFallbackWhitelist: [/^(?!/__).*/],
      // Don't precache sourcemaps (they're large) and build asset manifest:
      staticFileGlobsIgnorePatterns: [/.map$/, /asset-manifest.json$/],
      }),
      // 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$/, /moment$/),
      ],
      // 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: {
      dgram: 'empty',
      fs: 'empty',
      net: 'empty',
      tls: 'empty',
      child_process: 'empty',
      },
      };





      "dependencies": {
      "autoprefixer": "7.1.6",
      "axios": "^0.18.0",
      "babel-core": "6.26.0",
      "babel-eslint": "7.2.3",
      "babel-jest": "20.0.3",
      "babel-loader": "7.1.2",
      "babel-preset-react-app": "^3.1.1",
      "babel-runtime": "6.26.0",
      "bootstrap": "^4.1.3",
      "case-sensitive-paths-webpack-plugin": "2.1.1",
      "chalk": "1.1.3",
      "css-loader": "0.28.7",
      "date-fns": "^1.29.0",
      "dotenv": "4.0.0",
      "dotenv-expand": "4.2.0",
      "emoji-mart": "^2.8.1",
      "eslint": "4.10.0",
      "eslint-config-react-app": "^2.1.0",
      "eslint-loader": "1.9.0",
      "eslint-plugin-flowtype": "2.39.1",
      "eslint-plugin-import": "2.8.0",
      "eslint-plugin-jsx-a11y": "5.1.1",
      "eslint-plugin-react": "7.4.0",
      "extract-text-webpack-plugin": "3.0.2",
      "file-loader": "1.1.5",
      "firebase": "^5.5.5",
      "fs-extra": "3.0.1",
      "giphy-js-sdk-core": "1.0.6",
      "history": "^4.7.2",
      "html-webpack-plugin": "2.29.0",
      "jest": "20.0.4",
      "lodash": "^4.17.10",
      "moment": "^2.22.2",
      "npm-run-all": "^4.1.3",
      "object-assign": "4.1.1",
      "postcss-flexbugs-fixes": "3.2.0",
      "postcss-loader": "2.0.8",
      "promise": "8.0.1",
      "prop-types": "^15.6.2",
      "raf": "3.4.0",
      "react": "^16.6.1",
      "react-detect-offline": "^2.1.2",
      "react-dev-utils": "^5.0.1",
      "react-dnd": "^5.0.0",
      "react-dnd-html5-backend": "^5.0.1",
      "react-dom": "^16.4.2",
      "react-flip-move": "^3.0.3",
      "react-giphy-select": "^1.0.3",
      "react-intercom": "^1.0.14",
      "react-pose": "3.1.0",
      "react-redux": "^5.0.7",
      "react-router": "^4.3.1",
      "react-router-dom": "^4.3.1",
      "react-stripe-elements": "^2.0.1",
      "react-textarea-autosize": "^7.1.0-1",
      "react-tooltip": "^3.8.4",
      "react-transition-group": "^2.4.0",
      "redux": "^4.0.0",
      "redux-thunk": "^2.3.0",
      "resolve": "1.6.0",
      "sass-web-fonts": "^2.0.2",
      "style-loader": "0.19.0",
      "sw-precache-webpack-plugin": "0.11.4",
      "twilio-chat": "3.1.0",
      "url-loader": "0.6.2",
      "webpack": "3.10.0",
      "webpack-dev-server": "2.9.4",
      "webpack-manifest-plugin": "1.3.2",
      "whatwg-fetch": "2.0.3"
      },
      "devDependencies": {
      "node-sass-chokidar": "^1.3.3"
      },
      "scripts": {
      "build-css": "node-sass-chokidar --include-path ./src/styles --include-path ./node_modules src/styles/ -o src/styles/",
      "watch-css": "npm run build-css && node-sass-chokidar --include-path ./src/styles --include-path ./node_modules src/styles/ -o src/styles --watch --recursive",
      "start-js": "node scripts/start.js",
      "start": "npm-run-all -p watch-css start-js",
      "build": "npm run build-css && node scripts/build.js",
      "test": "node scripts/test.js --env=jsdom"
      },
      "jest": {
      "collectCoverageFrom": [
      "src/**/*.{js,jsx,mjs}"
      ],
      "setupFiles": [
      "<rootDir>/config/polyfills.js"
      ],
      "testMatch": [
      "<rootDir>/src/**/__tests__/**/*.{js,jsx,mjs}",
      "<rootDir>/src/**/?(*.)(spec|test).{js,jsx,mjs}"
      ],
      "testEnvironment": "node",
      "testURL": "http://localhost",
      "transform": {
      "^.+\.(js|jsx|mjs)$": "<rootDir>/node_modules/babel-jest",
      "^.+\.css$": "<rootDir>/config/jest/cssTransform.js",
      "^(?!.*\.(js|jsx|mjs|css|json)$)": "<rootDir>/config/jest/fileTransform.js"
      },
      "transformIgnorePatterns": [
      "[/\\]node_modules[/\\].+\.(js|jsx|mjs)$"
      ],
      "moduleNameMapper": {
      "^react-native$": "react-native-web"
      },
      "moduleFileExtensions": [
      "web.js",
      "js",
      "json",
      "web.jsx",
      "jsx",
      "node",
      "mjs"
      ]
      },
      "babel": {
      "presets": [
      "react-app"
      ]
      },
      "eslintConfig": {
      "extends": "react-app"
      }
      }





      "dependencies": {
      "autoprefixer": "7.1.6",
      "axios": "^0.18.0",
      "babel-core": "6.26.0",
      "babel-eslint": "7.2.3",
      "babel-jest": "20.0.3",
      "babel-loader": "7.1.2",
      "babel-preset-react-app": "^3.1.1",
      "babel-runtime": "6.26.0",
      "bootstrap": "^4.1.3",
      "case-sensitive-paths-webpack-plugin": "2.1.1",
      "chalk": "1.1.3",
      "css-loader": "0.28.7",
      "date-fns": "^1.29.0",
      "dotenv": "4.0.0",
      "dotenv-expand": "4.2.0",
      "emoji-mart": "^2.8.1",
      "eslint": "4.10.0",
      "eslint-config-react-app": "^2.1.0",
      "eslint-loader": "1.9.0",
      "eslint-plugin-flowtype": "2.39.1",
      "eslint-plugin-import": "2.8.0",
      "eslint-plugin-jsx-a11y": "5.1.1",
      "eslint-plugin-react": "7.4.0",
      "extract-text-webpack-plugin": "3.0.2",
      "file-loader": "1.1.5",
      "firebase": "^5.5.5",
      "fs-extra": "3.0.1",
      "giphy-js-sdk-core": "1.0.6",
      "history": "^4.7.2",
      "html-webpack-plugin": "2.29.0",
      "jest": "20.0.4",
      "lodash": "^4.17.10",
      "moment": "^2.22.2",
      "npm-run-all": "^4.1.3",
      "object-assign": "4.1.1",
      "postcss-flexbugs-fixes": "3.2.0",
      "postcss-loader": "2.0.8",
      "promise": "8.0.1",
      "prop-types": "^15.6.2",
      "raf": "3.4.0",
      "react": "^16.6.1",
      "react-detect-offline": "^2.1.2",
      "react-dev-utils": "^5.0.1",
      "react-dnd": "^5.0.0",
      "react-dnd-html5-backend": "^5.0.1",
      "react-dom": "^16.4.2",
      "react-flip-move": "^3.0.3",
      "react-giphy-select": "^1.0.3",
      "react-intercom": "^1.0.14",
      "react-pose": "3.1.0",
      "react-redux": "^5.0.7",
      "react-router": "^4.3.1",
      "react-router-dom": "^4.3.1",
      "react-stripe-elements": "^2.0.1",
      "react-textarea-autosize": "^7.1.0-1",
      "react-tooltip": "^3.8.4",
      "react-transition-group": "^2.4.0",
      "redux": "^4.0.0",
      "redux-thunk": "^2.3.0",
      "resolve": "1.6.0",
      "sass-web-fonts": "^2.0.2",
      "style-loader": "0.19.0",
      "sw-precache-webpack-plugin": "0.11.4",
      "twilio-chat": "3.1.0",
      "url-loader": "0.6.2",
      "webpack": "3.10.0",
      "webpack-dev-server": "2.9.4",
      "webpack-manifest-plugin": "1.3.2",
      "whatwg-fetch": "2.0.3"
      },
      "devDependencies": {
      "node-sass-chokidar": "^1.3.3"
      },
      "scripts": {
      "build-css": "node-sass-chokidar --include-path ./src/styles --include-path ./node_modules src/styles/ -o src/styles/",
      "watch-css": "npm run build-css && node-sass-chokidar --include-path ./src/styles --include-path ./node_modules src/styles/ -o src/styles --watch --recursive",
      "start-js": "node scripts/start.js",
      "start": "npm-run-all -p watch-css start-js",
      "build": "npm run build-css && node scripts/build.js",
      "test": "node scripts/test.js --env=jsdom"
      },
      "jest": {
      "collectCoverageFrom": [
      "src/**/*.{js,jsx,mjs}"
      ],
      "setupFiles": [
      "<rootDir>/config/polyfills.js"
      ],
      "testMatch": [
      "<rootDir>/src/**/__tests__/**/*.{js,jsx,mjs}",
      "<rootDir>/src/**/?(*.)(spec|test).{js,jsx,mjs}"
      ],
      "testEnvironment": "node",
      "testURL": "http://localhost",
      "transform": {
      "^.+\.(js|jsx|mjs)$": "<rootDir>/node_modules/babel-jest",
      "^.+\.css$": "<rootDir>/config/jest/cssTransform.js",
      "^(?!.*\.(js|jsx|mjs|css|json)$)": "<rootDir>/config/jest/fileTransform.js"
      },
      "transformIgnorePatterns": [
      "[/\\]node_modules[/\\].+\.(js|jsx|mjs)$"
      ],
      "moduleNameMapper": {
      "^react-native$": "react-native-web"
      },
      "moduleFileExtensions": [
      "web.js",
      "js",
      "json",
      "web.jsx",
      "jsx",
      "node",
      "mjs"
      ]
      },
      "babel": {
      "presets": [
      "react-app"
      ]
      },
      "eslintConfig": {
      "extends": "react-app"
      }
      }






      webpack minify create-react-app twilio-programmable-chat






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      asked Nov 11 at 23:07









      Kristoffer Abell

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