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Below is the webpack config code and it's size is around 6.2 MB. In production mode it looks more time load the signin page url and from second time onwards it looks good , the problem with first time and need suggestion to reduce the bundle.js file size
webpack.base.js
module.exports = {
//Running babel to every file
module: {
rules: [
{
test: /\.js?$/,
loader: 'babel-loader',
exclude: /node_modules/,
options: {
presets: [
'react',
'stage-0',
['env', { targets: { browsers: ['last 2 versions'] } }]
]
}
}, {
test: /\.css$/,
loader: "style-loader!css-loader"
},
{
test: /\.less$/,
use:[
{
loader: "style-loader"
},
{
loader: 'css-loader'
},
{
loader: "less-loader"
}
]
},
{
test: /\.(jpe?g|png|gif|woff|woff2|eot|ttf|svg|otf)(\?[a-z0-9=.]+)?$/,
loader: 'url-loader?limit=100000'
}
]
}//end module
}
webpack.client.js:
const config = {
entry: './src/client/client.js',
output: {
filename: 'bundle.js',
path: path.resolve(__dirname, 'public')
}
};
module.exports = merge(baseConfig, config)
webpack.server.js:
const server_config = {
//letting webapck know that this bundle is created for node server.
target: 'node',
entry: './src/server/server.js',
output: {
filename: 'bundle.js',
path: path.resolve(__dirname, 'build')
},
externals: [webpackNodeExternals()],
node:{
__dirname:false
}
};
module.exports = merge(baseConfig, server_config);
Here is how I optimize webpack. You can view my full config here
First you need to run webpack production mode when you want to build in production
webpack -p --mode=production
Below is minial config
const path = require("path");
const webpack = require("webpack");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const CompressionPlugin = require("compression-webpack-plugin");
const UglifyJsPlugin = require("uglifyjs-webpack-plugin");
const WebpackShellPlugin = require('webpack-shell-plugin');
const OptimizeCSSAssetsPlugin = require("optimize-css-assets-webpack-plugin");
module.exports = {
optimization: {
minimizer: [
new UglifyJsPlugin({ // minify js file
cache: true,
parallel: true,
sourceMap: false,
extractComments: 'all',
uglifyOptions: {
compress: true,
output: null
}
}),
new OptimizeCSSAssetsPlugin({ // minify css
cssProcessorOptions: {
safe: true,
discardComments: {
removeAll: true,
},
},
})
]
},
plugins: [
new CompressionPlugin({ // gzip js and css
test: /\.(js|css)/
}),
new UglifyJsPlugin(), // uglify js
new WebpackShellPlugin({
onBuildStart: ['echo "Starting postcss command"'],
onBuildEnd: ['postcss --dir wwwroot/dist wwwroot/dist/*.css'] // uglify css using postcss
})
],
module: {
rules: [{
test: /\.scss$/,
use: [
'style-loader',
MiniCssExtractPlugin.loader,
{
loader: "css-loader",
options: {
minimize: true,
sourceMap: true
}
},
{
loader: "sass-loader"
}
]
},
{
test: /\.(js|jsx)$/,
exclude: /node_modules/,
loader: ["babel-loader", "eslint-loader"]
},
{
test: /\.(jpe?g|png|gif)$/i,
loader: "file-loader"
},
{
test: /\.(woff|ttf|otf|eot|woff2|svg)$/i,
loader: "file-loader"
}
]
}
};
I'm having issues with setting up web-pack 4 and svg-sprite-loader to render svg icons as background images. I was following these instructions from official docs for svg-sprite-loader (https://github.com/kisenka/svg-sprite-loader/tree/master/examples/extract-mode).
I have successfully managed to create sprite.svg file in my dist folder and use it as reference for my use tags inside of html. However, i was also trying to use svg icons from my src/images/icons folder for a background image like this:
background: url('../images/icons/upload_icon.svg') 10% 50% no-repeat;
when doing this, webpack compiles correctly, but creates this in dist css file:
background: url([object Module]) 10% 50% no-repeat;
Any help would be great.
here is my webpack config file:
const path = require("path");
const webpack = require("webpack");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const CleanWebpackPlugin = require("clean-webpack-plugin");
const SpriteLoaderPlugin = require("svg-sprite-loader/plugin");
module.exports = {
mode: "development",
devtool: "source-map",
output: {
filename: "bundle.js",
path: path.resolve(__dirname, "dist")
},
module: {
rules: [
{
test: /\.js$/,
exclude: /node_modules/,
use: {
loader: "babel-loader",
options: {
sourceMap: true
}
}
},
{
// scss configuration
test: /\.scss$/,
use: [
MiniCssExtractPlugin.loader,
{
loader: "css-loader"
},
{
loader: "postcss-loader"
},
{
loader: "sass-loader",
options: {
sourceMap: true
}
}
]
},
{
// html configuration
test: /\.html$/,
use: {
loader: "html-loader"
}
},
{
// images configuration
test: /\.(jpg|jpeg|gif|png|woff|woff2)$/,
use: [
{
loader: "file-loader",
options: {
name: "[path][name].[ext]"
}
}
]
},
{
test: /\.svg$/,
use: [
{
loader: "svg-sprite-loader",
options: {
extract: true,
spriteFilename: "sprite.svg"
}
}
]
}
]
},
plugins: [
// all plugins used for compiling by webpack
new CleanWebpackPlugin(),
new HtmlWebpackPlugin({
title: "Style Guide",
template: path.resolve(__dirname, "src", "index.html")
}),
new MiniCssExtractPlugin({
filename: "app.css"
}),
new SpriteLoaderPlugin()
]
};
Adding esModule: false to the file-loader options did the trick for me.
{
test: /\.(jpg|png|gif|svg)$/,
use: {
loader: 'file-loader',
options: {
name: "[name].[ext]",
outputPath: "img",
esModule: false
}
},
You have to pass esModule: false for svg-sprite-loader options.
By the way (it is not related to esModule): With MiniCssExtractPlugin you can not to extract svg sprite. I've faced this problem one hour ago..
After a few hours, I have managed to make this thing to work, thanks to #WimmDeveloper for pointing me in right direction. Main change from prior webpack config file is that I have added esModule: false in svg-sprite-loader options and replaced MiniCssExtractPlugin with extract-text-webpack-plugin. Mind you that this solution is not ideal since this webpack plugin is deprecated.
here is my full webpack config file:
const path = require("path");
const webpack = require("webpack");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const CleanWebpackPlugin = require("clean-webpack-plugin");
const SpriteLoaderPlugin = require("svg-sprite-loader/plugin");
const ExtractTextPlugin = require("extract-text-webpack-plugin");
module.exports = {
mode: "development",
devtool: "source-map",
output: {
filename: "bundle.js",
path: path.resolve(__dirname, "dist")
},
module: {
rules: [
{
test: /\.js$/,
exclude: /node_modules/,
use: {
loader: "babel-loader",
options: {
sourceMap: true
}
}
},
{
test: /\.(s*)css$/,
use: ExtractTextPlugin.extract({
use: ["css-loader", "postcss-loader", "sass-loader"]
})
},
{
// html configuration
test: /\.html$/,
use: {
loader: "html-loader"
}
},
{
test: /\.svg$/,
use: [
{
loader: "svg-sprite-loader",
options: {
esModule: false,
extract: true,
spriteFilename: "sprite.svg"
}
}
]
},
{
// files configuration
test: /\.(jpg|jpeg|gif|png|woff|woff2)$/,
use: [
{
loader: "file-loader",
options: {
name: "[path][name].[ext]"
}
}
]
}
]
},
plugins: [
// all plugins used for compiling by webpack
new CleanWebpackPlugin(),
new HtmlWebpackPlugin({
title: "Style Guide",
template: path.resolve(__dirname, "src", "index.html")
}),
new ExtractTextPlugin({ filename: "app.css" }),
new SpriteLoaderPlugin()
]
};
How can I import an image using this web pack config?
I get the following error in the console after I build the app using yarn build. How can I import the image to the dashboard file from the assets/public folder? (please see image). Thanks in advance.
this the webpack config file.
const webpack = require('webpack');
const path = require('path');
const ExtractTextPlugin = require('extract-text-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const CopyWebpackPlugin = require('copy-webpack-plugin');
const extractCSS = new ExtractTextPlugin('[name].fonts.css');
const extractSCSS = new ExtractTextPlugin('[name].styles.css');
const BUILD_DIR = path.resolve(__dirname, 'build');
const SRC_DIR = path.resolve(__dirname, 'src');
console.log('BUILD_DIR', BUILD_DIR);
console.log('SRC_DIR', SRC_DIR);
module.exports = (env = {}) => {
return {
entry: {
index: [SRC_DIR + '/index.js']
},
output: {
path: BUILD_DIR,
filename: '[name].bundle.js',
},
// watch: true,
devtool: env.prod ? 'source-map' : 'cheap-module-eval-source-map',
devServer: {
contentBase: BUILD_DIR,
// port: 9001,
compress: true,
hot: true,
open: true
},
module: {
rules: [
{
test: /\.(js|jsx)$/,
exclude: /node_modules/,
use: {
loader: 'babel-loader',
options: {
cacheDirectory: true,
presets: ['react', 'env']
}
}
},
{
test: /\.html$/,
loader: 'html-loader'
},
{
test: /\.(scss)$/,
use: ['css-hot-loader'].concat(extractSCSS.extract({
fallback: 'style-loader',
use: [
{
loader: 'css-loader',
options: {alias: {'../img': '../public/img'}}
},
{
loader: 'sass-loader'
}
]
}))
},
{
test: /\.css$/,
use: extractCSS.extract({
fallback: 'style-loader',
use: 'css-loader'
})
},
{
test: /\.(png|jpg|jpeg|gif|ico)$/,
use: [
{
// loader: 'url-loader'
loader: 'file-loader',
options: {
name: './img/[name].[hash].[ext]'
}
}
]
},
{
test: /\.(woff(2)?|ttf|eot|svg)(\?v=\d+\.\d+\.\d+)?$/,
loader: 'file-loader',
options: {
name: './fonts/[name].[hash].[ext]'
}
}]
},
plugins: [
new webpack.HotModuleReplacementPlugin(),
new webpack.optimize.UglifyJsPlugin({sourceMap: true}),
new webpack.NamedModulesPlugin(),
extractCSS,
extractSCSS,
new HtmlWebpackPlugin(
{
inject: true,
template: './public/index.html'
}
),
new CopyWebpackPlugin([
{from: './public/img', to: 'img'}
],
{copyUnmodified: false}
)
]
}
};
Please see images below.
What Am I missing here?
Thanks in advance.
first of all , you should import your image like :
import MyImage from '../relative/path/to/your/image'
then use it like:
function App() {
return (
<div className="App">
<img src={MyImage} alt='any kind of description'>
</div>
);
}
When running webpack-dev-server produces an error
Module build failed: TypeError: text.forEach is not a function
enter image description here
'use strict';
var webpack = require('webpack');
var ExtractTextPlugin = require('extract-text-webpack-plugin');
var path = require('path');
module.exports = {
entry: {
app: ['./client/main.js'],
index: ['./server/index.pug']
},
output: {
path: path.resolve(__dirname, "..", "public",'js'),
publicPath: "/js/",
filename: '[name].js'
},
module: {
rules: [
{
test: /\.pug$/,
loader: ExtractTextPlugin.extract( 'pug-loader')
},
{
test: /\.js$/,
loader: "babel-loader",
exclude: /node_modules/,
query: {
presets: ['es2015']
}
},
{
test: /\.scss$/,
loader: ExtractTextPlugin.extract({
fallback: "style-loader",
use: [{
loader: "css-loader"
}, {
loader: "postcss-loader"
}, {
loader: "sass-loader"
}]
})
},
{
test: /\.vue$/,
loader: "vue-loader"
}
]
},
resolve: {
extensions: [".vue", ".js", ".json",".pug",".html"],
alias: {
'vue$': 'vue/dist/vue.common.js'
}
},
plugins: [
new ExtractTextPlugin("[name].html"),
new ExtractTextPlugin("[name].css"),
new webpack.NoEmitOnErrorsPlugin(),
new webpack.optimize.CommonsChunkPlugin({
name: "main",
minChunks: 2
})
],
}
Before that, I tried to do it through HtmlWebpackPlugin but there it returned plain text!
My webpack build has 2 entries the vendor.js => vendor.js file and index.js => bundle.js.
Obviously vendor.js is the file where all the 3rd party libraries go, and in index.js goes my code.
I've been encountering some issues, many of the 3rd party libraries I include (in vendor.js), does not execute from bundle.js . Why is that?
My webpack configuration:
import path from 'path';
var webpack = require('webpack');
var HtmlWebpackPlugin = require('html-webpack-plugin');
var ExtractTextPlugin = require("extract-text-webpack-plugin");
var CopyWebpackPlugin = require('copy-webpack-plugin');
var precss = require('precss');
var autoprefixer = require('autoprefixer');
module.exports = {
entry: {
bundle: './dev/index.js',
vendor: './dev/vendor.js'
},
output: {
path: path.join(__dirname, 'dist'),
// publicPath: 'http://localhost:3000/',
filename: '[name].[hash].js',
chunkFilename: '[id].bundle.js'
},
externals: [
{
"./dev/assets/Paraxify/paraxify.js": "paraxify",
}
],
module: {
loaders: [
{
test: /\.js$/,
// exclude: path.resolve(__dirname, "node_modules"),
loader: 'babel-loader',
// exclude: [
// path.resolve(__dirname, "node_modules"),
// ],
query: {
compact: true,
plugins: ["transform-es2015-modules-commonjs"],
presets: ['es2015', 'stage-0']
}
},
{
test: /\.scss$/,
loader: ExtractTextPlugin.extract(
"style",
"css!postcss-loader!sass")
},
// { test: /jquery/, loader: 'expose?$!expose?jQuery' },
{ test: /\.jpg$/, loader: "file-loader?name=./assets/imgs/[name].jpg" },
{ test: /\.png$/, loader: "file-loader?name=./assets/imgs/[name].png" },
{ test: /\.(gif|woff|woff2|eot|ttf|svg)$/, loader: "url-loader" },
// { test: /\grabbing.gif$/, loader: "url-loader" },
// { test: /\preloader.gif$/, loader: "url-loader" },
// { test: /\default-skin.svg$/, loader: "url-loader" },
// { test: /\/default-skin.png$/, loader: "url-loader" }
// { test: /\.(png|woff|woff2|eot|ttf|svg)$/, loader: 'url-loader?limit=100000' }
]
},
postcss: function () {
return [precss, autoprefixer];
},
plugins: [
new CopyWebpackPlugin([
{ from: './dev/assets', to: 'assets' }
]),
new CopyWebpackPlugin([
{ from: './dev/bootstrap3', to: 'bootstrap3' }
]),
new webpack.optimize.CommonsChunkPlugin({
name: ['bundle', 'vendor']
}),
new HtmlWebpackPlugin({
hash: false,
template: 'ejs!./dev/index.html',
inject: 'body'
}),
new ExtractTextPlugin("styles.[hash].css"),
new webpack.ProvidePlugin({
$: "jquery",
jQuery: "jquery"
}),
// new webpack.ProvidePlugin({
// twentytwenty: "frontend/dev/assets/twentytwenty/js/jquery.twentytwenty"
// })
]
};
Example of the issue :
Vendor.js : Importing Scrollreveal (https://scrollrevealjs.org/)
import $ from 'jquery';
// import 'eqcss';
// import Rx from 'rx';
import * as ScrollReveal from 'scrollreveal';
And when I do : window.sr = ScrollReveal({ reset: true }); for the variable to be available globally, I get an error in the browser's console : Uncaught TypeError: ScrollReveal is not a function
Can someone explain me What I'm doing incorrectly? Thanks