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











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
    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
      0
      down vote

      favorite









      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













      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






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 11 at 23:07









      Kristoffer Abell

      88112




      88112





























          active

          oldest

          votes











          Your Answer






          StackExchange.ifUsing("editor", function () {
          StackExchange.using("externalEditor", function () {
          StackExchange.using("snippets", function () {
          StackExchange.snippets.init();
          });
          });
          }, "code-snippets");

          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "1"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          autoActivateHeartbeat: false,
          convertImagesToLinks: true,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: 10,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














          draft saved

          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53254149%2fwebpack-3-10-0-cant-minify-the-line-return-new-date-toisostring-twilso%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown






























          active

          oldest

          votes













          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes
















          draft saved

          draft discarded




















































          Thanks for contributing an answer to Stack Overflow!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.





          Some of your past answers have not been well-received, and you're in danger of being blocked from answering.


          Please pay close attention to the following guidance:


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53254149%2fwebpack-3-10-0-cant-minify-the-line-return-new-date-toisostring-twilso%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          Popular posts from this blog

          Florida Star v. B. J. F.

          Danny Elfman

          Retrieve a Users Dashboard in Tumblr with R and TumblR. Oauth Issues