Develop Reference

Remove empty bundle file from the HTML template

I have a simple Webpack configuration to compile a static HTML file with the Bootstrap's CSS asset:
const path = require('path');
const glob = require('glob')
const MiniCssExtractPlugin = require('mini-css-extract-plugin')
const PurgeCssPlugin = require('purgecss-webpack-plugin')
const HtmlWebpackPlugin = require('html-webpack-plugin');
const mode = process.env.NODE_ENV || 'development';
const isProduction = 'production' === mode;
console.log(`Building mode: ${mode}`);
module.exports = {
mode: mode,
entry: './src/index.js',
output: {
path: path.resolve(__dirname, '..'),
filename: isProduction ? 'bundle.[contenthash].js' : 'bundle.js',
clean: false,
},
module: {
rules: [
{
test: /\.s[ac]ss$/i,
exclude: /node_modules/,
use: [
MiniCssExtractPlugin.loader,
'css-loader',
'sass-loader',
],
},
],
},
plugins: [
new HtmlWebpackPlugin({
inject: 'body',
template: 'index.ejs',
minify: isProduction,
}),
new MiniCssExtractPlugin({
filename: isProduction ? 'style.[contenthash].css' : 'style.css',
}),
new PurgeCssPlugin({
paths: glob.sync(path.join(__dirname, '..') + '/*', {nodir: true}),
}),
],
};
The src/index.js file is as simple as:
import "./scss/main.scss"
This configuration works really well, however since there're no JS files included, the generated bundle.js file is empty though it's still injected to the HTML template:
<script defer src="bundle.js"></script>
How can I remove this file completely from the template if it's empty?

Vue Webpack configuration doesn't minify images

So I am working on a simple card game, where i have like 40 images relate to the cards. I am using Vue Cli that already comes with a simple webpack configuration.
So basicly I am saving all the images on the static folder like this:
When I build the project for production, generating the dist folder, it creates the images like this:
this is my webpack production file:
'use strict'
const path = require('path')
const utils = require('./utils')
const webpack = require('webpack')
const config = require('../config')
const merge = require('webpack-merge')
const baseWebpackConfig = require('./webpack.base.conf')
const CopyWebpackPlugin = require('copy-webpack-plugin')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const ExtractTextPlugin = require('extract-text-webpack-plugin')
const OptimizeCSSPlugin = require('optimize-css-assets-webpack-plugin')
const UglifyJsPlugin = require('uglifyjs-webpack-plugin')
const env = process.env.NODE_ENV === 'testing'
? require('../config/test.env')
: require('../config/prod.env')
const webpackConfig = merge(baseWebpackConfig, {
module: {
rules: utils.styleLoaders({
sourceMap: config.build.productionSourceMap,
extract: true,
usePostCSS: true
})
},
devtool: config.build.productionSourceMap ? config.build.devtool : false,
output: {
path: config.build.assetsRoot,
filename: utils.assetsPath('js/[name].[chunkhash].js'),
chunkFilename: utils.assetsPath('js/[id].[chunkhash].js')
},
plugins: [
// http://vuejs.github.io/vue-loader/en/workflow/production.html
new webpack.DefinePlugin({
'process.env': env
}),
new UglifyJsPlugin({
uglifyOptions: {
compress: {
warnings: false
}
},
sourceMap: config.build.productionSourceMap,
parallel: true
}),
// extract css into its own file
new ExtractTextPlugin({
filename: utils.assetsPath('css/[name].[contenthash].css'),
// Setting the following option to `false` will not extract CSS from codesplit chunks.
// Their CSS will instead be inserted dynamically with style-loader when the codesplit chunk has been loaded by webpack.
// It's currently set to `true` because we are seeing that sourcemaps are included in the codesplit bundle as well when it's `false`,
// increasing file size: https://github.com/vuejs-templates/webpack/issues/1110
allChunks: true,
}),
// Compress extracted CSS. We are using this plugin so that possible
// duplicated CSS from different components can be deduped.
new OptimizeCSSPlugin({
cssProcessorOptions: config.build.productionSourceMap
? { safe: true, map: { inline: false } }
: { safe: true }
}),
// generate dist index.html with correct asset hash for caching.
// you can customize output by editing /index.html
// see https://github.com/ampedandwired/html-webpack-plugin
new HtmlWebpackPlugin({
filename: process.env.NODE_ENV === 'testing'
? 'index.html'
: config.build.index,
template: 'index.html',
inject: true,
minify: {
removeComments: true,
collapseWhitespace: true,
removeAttributeQuotes: true
// more options:
// https://github.com/kangax/html-minifier#options-quick-reference
},
// necessary to consistently work with multiple chunks via CommonsChunkPlugin
chunksSortMode: 'dependency'
}),
// keep module.id stable when vendor modules does not change
new webpack.HashedModuleIdsPlugin(),
// enable scope hoisting
new webpack.optimize.ModuleConcatenationPlugin(),
// split vendor js into its own file
new webpack.optimize.CommonsChunkPlugin({
name: 'vendor',
minChunks (module) {
// any required modules inside node_modules are extracted to vendor
return (
module.resource &&
/\.js$/.test(module.resource) &&
module.resource.indexOf(
path.join(__dirname, '../node_modules')
) === 0
)
}
}),
// extract webpack runtime and module manifest to its own file in order to
// prevent vendor hash from being updated whenever app bundle is updated
new webpack.optimize.CommonsChunkPlugin({
name: 'manifest',
minChunks: Infinity
}),
// This instance extracts shared chunks from code splitted chunks and bundles them
// in a separate chunk, similar to the vendor chunk
// see: https://webpack.js.org/plugins/commons-chunk-plugin/#extra-async-commons-chunk
new webpack.optimize.CommonsChunkPlugin({
name: 'app',
async: 'vendor-async',
children: true,
minChunks: 3
}),
// copy custom static assets
new CopyWebpackPlugin([
{
from: path.resolve(__dirname, '../static'),
to: config.build.assetsSubDirectory,
ignore: ['.*']
}
])
]
})
if (config.build.productionGzip) {
const CompressionWebpackPlugin = require('compression-webpack-plugin')
webpackConfig.plugins.push(
new CompressionWebpackPlugin({
asset: '[path].gz[query]',
algorithm: 'gzip',
test: new RegExp(
'\\.(' +
config.build.productionGzipExtensions.join('|') +
')$'
),
threshold: 10240,
minRatio: 0.8
})
)
}
if (config.build.bundleAnalyzerReport) {
const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin
webpackConfig.plugins.push(new BundleAnalyzerPlugin())
}
module.exports = webpackConfig
Any help would be appreciate, thanks

I'm assuming you used vuejs-templates/webpack, which does not include image optimization out of the box. You can easily add this (with imagemin-webpack-plugin) in your Webpack config:
Install ImageminWebpackPlugin with: npm i -D imagemin-webpack-plugin
In build/webpack.prod.conf.js, import the plugin, and configure it in plugins[] (after CopyWebpackPlugin):
const ImageminPlugin = require('imagemin-webpack-plugin').default;
const webpackConfig = merge(baseWebpackConfig, {
plugins: [
// ...
new ImageminPlugin({
test: /\.(jpe?g|png|gif|svg)$/i,
/* other ImageMin configs */
})
]
}
Running ImageminWebpackPlugin after CopyWebpackPlugin ensures the copied images from static are run through ImageMin optimization.
GitHub repo demo

In the current version of Vue you can use a vue.config.js that looks like this:
const ImageminPlugin = require('imagemin-webpack-plugin').default;
module.exports = {
configureWebpack: {
plugins: [
new ImageminPlugin({
disable: process.env.NODE_ENV !== 'production',
})
]
}
}
This will enable Imagemin on production builds but skip on development builds.

You can have a try. It will help you minify images automaticlly without complicated algorithm configurations. It can also help you to encode(and inline) images (behave more flexible than url-loader).
https://github.com/GaoYYYang/image-optimize-loader
module.exports = {
module: {
rules: [
{
test: /\.(png|jpe?g|webp|git|svg|)$/i,
use: [
{
loader: 'img-optimize-loader'
},
],
},
],
},
};

webpack not adding [contenthash] properly to my .js files

I am trying to set the hash of my files to reflect the content, so that they dont get cached.
The best/easiest way I found was by using contenthast on the file names, but when I try it, webpack adds it correctly to my .css and .map files, but not to my .js files
static/js/vendor.[contenthash].js 651 kB 0 [emitted] [big] vendor
static/js/main.[contenthash].js 131 kB 1 [emitted] main
static/js/manifest.[contenthash].js 869 bytes 2 [emitted] manifest
static/css/main.142c3dccf1d3eb2c02c84322b0cf2ef7.css 274 kB 1 [emitted] [big] main
static/css/main.142c3dccf1d3eb2c02c84322b0cf2ef7.css.map 545 kB [emitted]
static/js/vendor.651ccaf8218b875738b87d472058ef85.js.map 2.78 MB 0 [emitted] vendor
static/js/main.1d8c83094a24fff4097ced4e4b947bd5.js.map 471 kB 1 [emitted] main
static/js/manifest.76f2ac98b5b1630c96bf2b7aeb5b3498.js.map 4.96 kB 2 [emitted] manifest
My webpack.prod.conf.js looks like:
/* eslint-disable */
'use strict'
const path = require('path')
const utils = require('./utils')
const webpack = require('webpack')
const config = require('../config')
const merge = require('webpack-merge')
const baseWebpackConfig = require('./webpack.base.conf')
const CopyWebpackPlugin = require('copy-webpack-plugin')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const ExtractTextPlugin = require('extract-text-webpack-plugin')
const OptimizeCSSPlugin = require('optimize-css-assets-webpack-plugin')
const UglifyJsPlugin = require('uglifyjs-webpack-plugin')
const env = require('../config/prod.env')
const webpackConfig = merge(baseWebpackConfig, {
module: {
rules: utils.styleLoaders({
sourceMap: config.build.productionSourceMap,
extract: true,
usePostCSS: true
})
},
devtool: config.build.productionSourceMap ? config.build.devtool : false,
output: {
path: config.build.assetsRoot,
filename: utils.assetsPath(`js/[name].[contenthash].js`),
chunkFilename: utils.assetsPath(`js/[id].[contenthash].js`)
},
plugins: [
// http://vuejs.github.io/vue-loader/en/workflow/production.html
new webpack.DefinePlugin({
'process.env': env
}),
new UglifyJsPlugin({
uglifyOptions: {
compress: {
warnings: false
}
},
sourceMap: config.build.productionSourceMap,
parallel: true
}),
// extract css into its own file
new ExtractTextPlugin({
filename: utils.assetsPath(`css/[name].[contenthash].css`),
// Setting the following option to `false` will not extract CSS from codesplit chunks.
// Their CSS will instead be inserted dynamically with style-loader when the codesplit chunk has been loaded by webpack.
// It's currently set to `true` because we are seeing that sourcemaps are included in the codesplit bundle as well when it's `false`,
// increasing file size: https://github.com/vuejs-templates/webpack/issues/1110
allChunks: true,
}),
// Compress extracted CSS. We are using this plugin so that possible
// duplicated CSS from different components can be deduped.
new OptimizeCSSPlugin({
cssProcessorOptions: config.build.productionSourceMap
? { safe: true, map: { inline: false } }
: { safe: true }
}),
// generate dist index.html with correct asset hash for caching.
// you can customize output by editing /index.html
// see https://github.com/ampedandwired/html-webpack-plugin
new HtmlWebpackPlugin({
filename: config.build.index,
template: 'index.html',
inject: true,
minify: {
removeComments: true,
collapseWhitespace: true,
removeAttributeQuotes: true
// more options:
// https://github.com/kangax/html-minifier#options-quick-reference
},
// necessary to consistently work with multiple chunks via CommonsChunkPlugin
chunksSortMode: 'dependency'
}),
// keep module.id stable when vendor modules does not change
new webpack.HashedModuleIdsPlugin(),
// enable scope hoisting
new webpack.optimize.ModuleConcatenationPlugin(),
// split vendor js into its own file
new webpack.optimize.CommonsChunkPlugin({
name: 'vendor',
minChunks (module) {
// any required modules inside node_modules are extracted to vendor
return (
module.resource &&
/\.js$/.test(module.resource) &&
module.resource.indexOf(
path.join(__dirname, '../node_modules')
) === 0
)
}
}),
// extract webpack runtime and module manifest to its own file in order to
// prevent vendor hash from being updated whenever app bundle is updated
new webpack.optimize.CommonsChunkPlugin({
name: 'manifest',
minChunks: Infinity
}),
// This instance extracts shared chunks from code splitted chunks and bundles them
// in a separate chunk, similar to the vendor chunk
// see: https://webpack.js.org/plugins/commons-chunk-plugin/#extra-async-commons-chunk
new webpack.optimize.CommonsChunkPlugin({
name: 'app',
async: 'vendor-async',
children: true,
minChunks: 3
}),
// copy custom static assets
new CopyWebpackPlugin([
{
from: path.resolve(__dirname, '../static'),
to: config.build.assetsSubDirectory,
ignore: ['.*']
}
])
]
})
if (config.build.productionGzip) {
const CompressionWebpackPlugin = require('compression-webpack-plugin')
webpackConfig.plugins.push(
new CompressionWebpackPlugin({
asset: '[path].gz[query]',
algorithm: 'gzip',
test: new RegExp(
'\\.(' +
config.build.productionGzipExtensions.join('|') +
')$'
),
threshold: 10240,
minRatio: 0.8
})
)
}
if (config.build.bundleAnalyzerReport) {
const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin
webpackConfig.plugins.push(new BundleAnalyzerPlugin())
}
module.exports = webpackConfig
And webpack.base.conf.js:
/* eslint-disable */
'use strict'
const path = require('path')
const utils = require('./utils')
const config = require('../config')
const vueLoaderConfig = require('./vue-loader.conf')
function resolve (dir) {
return path.join(__dirname, '..', dir)
}
module.exports = {
context: path.resolve(__dirname, '../'),
entry: ['babel-polyfill', './src/main.js'],
output: {
path: config.build.assetsRoot,
filename: '[name].js',
publicPath: process.env.NODE_ENV === 'production'
? config.build.assetsPublicPath
: config.dev.assetsPublicPath
},
resolve: {
extensions: ['.js', '.vue', '.json'],
alias: {
'vue$': 'vue/dist/vue.esm.js',
'#': resolve('src'),
}
},
module: {
rules: [
{
test: /\.vue$/,
loader: 'vue-loader',
options: vueLoaderConfig
},
{
test: /\.js$/,
loader: 'babel-loader',
include: [resolve('src'), resolve('test'), resolve('node_modules/webpack-dev-server/client')]
},
{
test: /\.(png|jpe?g|gif|svg)(\?.*)?$/,
loader: 'url-loader',
options: {
limit: 10000,
name: utils.assetsPath('img/[name].[ext]')
}
},
{
test: /\.(mp4|webm|ogg|mp3|wav|flac|aac)(\?.*)?$/,
loader: 'url-loader',
options: {
limit: 10000,
name: utils.assetsPath('media/[name].[ext]')
}
},
{
test: /\.(woff2?|eot|ttf|otf)(\?.*)?$/,
loader: 'url-loader',
options: {
limit: 10000,
name: utils.assetsPath('fonts/[name].[ext]')
}
}
]
},
node: {
// prevent webpack from injecting useless setImmediate polyfill because Vue
// source contains it (although only uses it if it's native).
setImmediate: false,
// prevent webpack from injecting mocks to Node native modules
// that does not make sense for the client
dgram: 'empty',
fs: 'empty',
net: 'empty',
tls: 'empty',
child_process: 'empty'
}
}
more info can be found here in a bug ticket for webpack: https://github.com/webpack/webpack/issues/7884

Try to use [hash] instead of [contentHash]. This worked for me

I used a small letter "h" and it worked script.[contenthash].js

[contenthash] is used in some plugins like extract-text-webpack-plugin since their beginning, but unfortunately webpack started using [contenthash] only in webpack 4.
tl;dr since you are using webpack 3, then you have only one option, which is [chunkhash]

Faced the same issue, I was naming my output file as main.[contentHash].js but changing it to main.[contenthash].js worked for me.

npm run build doesn't work."Opening index.html over file:// won't work."

I'm trying to use Vue(v2) to build a single page application. Running the command npm run build doesn't work; I don't find a static file created in my folder. Although I don't get any error message, I see this in the command line after executing npm run build:
Build complete. Tip: built files are meant to be served over an HTTP server. Opening index.html over file:// won't work.
The content of my build/build.js file (which is the script that npm run build executes) is as follows:
require('./check-versions')()
process.env.NODE_ENV = 'production'
var ora = require('ora')
var rm = require('rimraf')
var path = require('path')
var chalk = require('chalk')
var webpack = require('webpack')
var config = require('../config')
var webpackConfig = require('./webpack.prod.conf')
var spinner = ora('building for production...')
spinner.start()
rm(path.join(config.build.assetsRoot, config.build.assetsSubDirectory), err => {
if (err) throw err
webpack(webpackConfig, function (err, stats) {
spinner.stop()
if (err) throw err
process.stdout.write(stats.toString({
colors: true,
modules: false,
children: false,
chunks: false,
chunkModules: false
}) + '\n\n')
if (stats.hasErrors()) {
console.log(chalk.red(' Build failed with errors.\n'))
process.exit(1)
}
console.log(chalk.cyan(' Build complete.\n'))
console.log(chalk.yellow(
' Tip: built files are meant to be served over an HTTP server.\n' +
' Opening index.html over file:// won\'t work.\n'
))
})
})
The content of my webpack.prod.conf.js file:
var path = require('path')
var utils = require('./utils')
var webpack = require('webpack')
var config = require('../config')
var merge = require('webpack-merge')
var baseWebpackConfig = require('./webpack.base.conf')
var CopyWebpackPlugin = require('copy-webpack-plugin')
var HtmlWebpackPlugin = require('html-webpack-plugin')
var ExtractTextPlugin = require('extract-text-webpack-plugin')
var OptimizeCSSPlugin = require('optimize-css-assets-webpack-plugin')
var env = process.env.NODE_ENV === 'testing'
? require('../config/test.env')
: config.build.env
var webpackConfig = merge(baseWebpackConfig, {
module: {
rules: utils.styleLoaders({
sourceMap: config.build.productionSourceMap,
extract: true
})
},
devtool: config.build.productionSourceMap ? '#source-map' : false,
output: {
path: config.build.assetsRoot,
filename: utils.assetsPath('js/[name].[chunkhash].js'),
chunkFilename: utils.assetsPath('js/[id].[chunkhash].js')
},
plugins: [
// http://vuejs.github.io/vue-loader/en/workflow/production.html
new webpack.DefinePlugin({
'process.env': env
}),
new webpack.optimize.UglifyJsPlugin({
compress: {
warnings: false
},
sourceMap: true
}),
// extract css into its own file
new ExtractTextPlugin({
filename: utils.assetsPath('css/[name].[contenthash].css')
}),
// Compress extracted CSS. We are using this plugin so that possible
// duplicated CSS from different components can be deduped.
new OptimizeCSSPlugin({
cssProcessorOptions: {
safe: true
}
}),
// generate dist index.html with correct asset hash for caching.
// you can customize output by editing /index.html
// see https://github.com/ampedandwired/html-webpack-plugin
new HtmlWebpackPlugin({
filename: process.env.NODE_ENV === 'testing'
? 'index.html'
: config.build.index,
template: 'index.html',
inject: true,
minify: {
removeComments: true,
collapseWhitespace: true,
removeAttributeQuotes: true
// more options:
// https://github.com/kangax/html-minifier#options-quick-reference
},
// necessary to consistently work with multiple chunks via CommonsChunkPlugin
chunksSortMode: 'dependency'
}),
// keep module.id stable when vender modules does not change
new webpack.HashedModuleIdsPlugin(),
// split vendor js into its own file
new webpack.optimize.CommonsChunkPlugin({
name: 'vendor',
minChunks: function (module, count) {
// any required modules inside node_modules are extracted to vendor
return (
module.resource &&
/\.js$/.test(module.resource) &&
module.resource.indexOf(
path.join(__dirname, '../node_modules')
) === 0
)
}
}),
// extract webpack runtime and module manifest to its own file in order to
// prevent vendor hash from being updated whenever app bundle is updated
new webpack.optimize.CommonsChunkPlugin({
name: 'manifest',
chunks: ['vendor']
}),
// copy custom static assets
new CopyWebpackPlugin([
{
from: path.resolve(__dirname, '../static'),
to: config.build.assetsSubDirectory,
ignore: ['.*']
}
])
]
})
if (config.build.productionGzip) {
var CompressionWebpackPlugin = require('compression-webpack-plugin')
webpackConfig.plugins.push(
new CompressionWebpackPlugin({
asset: '[path].gz[query]',
algorithm: 'gzip',
test: new RegExp(
'\\.(' +
config.build.productionGzipExtensions.join('|') +
')$'
),
threshold: 10240,
minRatio: 0.8
})
)
}
if (config.build.bundleAnalyzerReport) {
var BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin
webpackConfig.plugins.push(new BundleAnalyzerPlugin())
}
module.exports = webpackConfig
What should I do about it?

File: config/index.js
Change assetsPublicPath from '/' to './'

I finally found the problem: I went to config/index.js and changed the AssetPublicPath from default path into my own path. And then it worked! But the Tips is still there. I don't think that's a problem anyway.

Webpack Never finishes

I'm working on a React project and I suddenly realize that when I starting my server, webpack never finishes(CPU usage is full and no output prints on the screen from webpack, I check it with -v switch and nothing changed.
How should id find the problem, Since I am unable to get any usable information from npm/webpack.
Edit:
when running with production Configuration it works fine, But in Development Configuration, it never stops. blow is my dev/prod configuration:
Dev:
/**
* DEVELOPMENT WEBPACK CONFIGURATION
*/
const path = require('path');
const fs = require('fs');
const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const logger = require('../../server/logger');
const cheerio = require('cheerio');
const pkg = require(path.resolve(process.cwd(), 'package.json'));
const dllPlugin = pkg.dllPlugin;
const plugins = [
new webpack.HotModuleReplacementPlugin(), // Tell webpack we want hot reloading
new webpack.NoErrorsPlugin(),
new HtmlWebpackPlugin({
inject: true, // Inject all files that are generated by webpack, e.g. bundle.js
templateContent: templateContent(), // eslint-disable-line no-use-before-define
}),
];
module.exports = require('./webpack.base.babel')({
// Add hot reloading in development
entry: [
'script!jquery/dist/jquery.js',
// 'script!materialize-css/dist/js/materialize.js',
'script!style/js/materialize.js',
'script!style/js/init.js',
'eventsource-polyfill', // Necessary for hot reloading with IE
'webpack-hot-middleware/client',
path.join(process.cwd(), 'app/app.js'), // Start with js/app.js
],
// Don't use hashes in dev mode for better performance
output: {
filename: '[name].js',
chunkFilename: '[name].chunk.js',
},
// Add development plugins
plugins: dependencyHandlers().concat(plugins).concat(new CircularDependencyPlugin({
// exclude detection of files based on a RegExp
exclude: /a\.js/,
// add errors to webpack instead of warnings
failOnError: true
})
), // eslint-disable-line no-use-before-define
// Load the CSS in a style tag in development
cssLoaders: 'style-loader!css-loader?localIdentName=[local]__[path][name]__[hash:base64:5]&importLoaders=1',
// Tell babel that we want to hot-reload
babelQuery: {
presets: ['react-hmre'],
},
// Emit a source map for easier debugging
// devtool: 'cheap-module-eval-source-map',
devtool: 'source-map',
});
/**
* Select which plugins to use to optimize the bundle's handling of
* third party dependencies.
*
* If there is a dllPlugin key on the project's package.json, the
* Webpack DLL Plugin will be used. Otherwise the CommonsChunkPlugin
* will be used.
*
*/
function dependencyHandlers() {
// Don't do anything during the DLL Build step
if (process.env.BUILDING_DLL) {
return [];
}
// If the package.json does not have a dllPlugin property, use the CommonsChunkPlugin
if (!dllPlugin) {
return [
new webpack.optimize.CommonsChunkPlugin({
name: 'vendor',
children: true,
minChunks: 2,
async: true,
}),
];
}
const dllPath = path.resolve(process.cwd(), dllPlugin.path || 'node_modules/react-boilerplate-dlls');
/**
* If DLLs aren't explicitly defined, we assume all production dependencies listed in package.json
* Reminder: You need to exclude any server side dependencies by listing them in dllConfig.exclude
*
* #see https://github.com/mxstbr/react-boilerplate/tree/master/docs/general/webpack.md
*/
if (!dllPlugin.dlls) {
const manifestPath = path.resolve(dllPath, 'reactBoilerplateDeps.json');
if (!fs.existsSync(manifestPath)) {
logger.error('The DLL manifest is missing. Please run `npm run build:dll`');
process.exit(0);
}
return [
new webpack.DllReferencePlugin({
context: process.cwd(),
manifest: require(manifestPath), // eslint-disable-line global-require
}),
];
}
// If DLLs are explicitly defined, we automatically create a DLLReferencePlugin for each of them.
const dllManifests = Object.keys(dllPlugin.dlls).map((name) => path.join(dllPath, `/${name}.json`));
return dllManifests.map((manifestPath) => {
if (!fs.existsSync(path)) {
if (!fs.existsSync(manifestPath)) {
logger.error(`The following Webpack DLL manifest is missing: ${path.basename(manifestPath)}`);
logger.error(`Expected to find it in ${dllPath}`);
logger.error('Please run: npm run build:dll');
process.exit(0);
}
}
return new webpack.DllReferencePlugin({
context: process.cwd(),
manifest: require(manifestPath), // eslint-disable-line global-require
});
});
}
/**
* We dynamically generate the HTML content in development so that the different
* DLL Javascript files are loaded in script tags and available to our application.
*/
function templateContent() {
const html = fs.readFileSync(
path.resolve(process.cwd(), 'app/index.html')
).toString();
if (!dllPlugin) {
return html;
}
const doc = cheerio(html);
const body = doc.find('body');
const dllNames = !dllPlugin.dlls ? ['reactBoilerplateDeps'] : Object.keys(dllPlugin.dlls);
dllNames.forEach((dllName) => body.append(`<script data-dll='true' src='/${dllName}.dll.js'></script>`));
return doc.toString();
}
Prod:
// Important modules this config uses
const path = require('path');
const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const ExtractTextPlugin = require('extract-text-webpack-plugin');
const OfflinePlugin = require('offline-plugin');
module.exports = require('./webpack.base.babel')({
// In production, we skip all hot-reloading stuff
entry: [
'script!jquery/dist/jquery.min.js',
// 'script!materialize-css/dist/js/materialize.min.js',
'script!style/js/materialize.min.js',
'script!style/js/init.js',
path.join(process.cwd(), 'app/app.js'),
],
// Utilize long-term caching by adding content hashes (not compilation hashes) to compiled assets
output: {
filename: '[name].[chunkhash].js',
chunkFilename: '[name].[chunkhash].chunk.js',
},
// We use ExtractTextPlugin so we get a separate CSS file instead
// of the CSS being in the JS and injected as a style tag
cssLoaders: ExtractTextPlugin.extract({
fallbackLoader: 'style-loader',
loader: 'css-loader?modules&-autoprefixer&importLoaders=1!postcss-loader',
}),
plugins: [
new webpack.optimize.CommonsChunkPlugin({
name: 'vendor',
children: true,
minChunks: 2,
async: true,
}),
// OccurrenceOrderPlugin is needed for long-term caching to work properly.
// See http://mxs.is/googmv
new webpack.optimize.OccurrenceOrderPlugin(true),
// Merge all duplicate modules
new webpack.optimize.DedupePlugin(),
// Minify and optimize the JavaScript
new webpack.optimize.UglifyJsPlugin({
compress: {
warnings: false, // ...but do not show warnings in the console (there is a lot of them)
},
}),
// Minify and optimize the index.html
new HtmlWebpackPlugin({
template: 'app/index.html',
minify: {
removeComments: true,
collapseWhitespace: true,
removeRedundantAttributes: true,
useShortDoctype: true,
removeEmptyAttributes: true,
removeStyleLinkTypeAttributes: true,
keepClosingSlash: true,
minifyJS: true,
minifyCSS: true,
minifyURLs: true,
},
inject: true,
}),
// Extract the CSS into a separate file
new ExtractTextPlugin('[name].[contenthash].css'),
// Put it in the end to capture all the HtmlWebpackPlugin's
// assets manipulations and do leak its manipulations to HtmlWebpackPlugin
new OfflinePlugin({
relativePaths: false,
publicPath: '/',
// No need to cache .htaccess. See http://mxs.is/googmp,
// this is applied before any match in `caches` section
excludes: ['.htaccess'],
caches: {
main: [':rest:'],
// All chunks marked as `additional`, loaded after main section
// and do not prevent SW to install. Change to `optional` if
// do not want them to be preloaded at all (cached only when first loaded)
additional: ['*.chunk.js'],
},
// Removes warning for about `additional` section usage
safeToUseOptionalCaches: true,
AppCache: false,
}),
],
});