I would like to webpack my React.js app using uglify version
webpack.config.js
module.exports = {
entry: './_react/index',
output: {
path: './dist/public/app',
filename: 'bundle.min.js'
},
devtool: 'source-map',
devServer: {
contentBase: __dirname
},
module: {
loaders: [{
test: /\.js?$/,
exclude: /(node_modules|bower_components)/,
loader: ['babel-loader'],
query: {
presets: ['es2015', 'react']
}
}]
}
}
Terminal
webpack -p
After previewing on the web browser, I got this error
Please guide, thanks
As jmargolisvt said, you need to set the NODE_ENV.
Try updating your webpack.config.js with the following:
plugins: [
new webpack.DefinePlugin({
'process.env': {
'NODE_ENV': JSON.stringify('production')
}
})
],
Or in your current config as:
module.exports = {
entry: './_react/index',
output: {
path: './dist/public/app',
filename: 'bundle.min.js'
},
devtool: 'source-map',
devServer: {
contentBase: __dirname
},
module: {
loaders: [{
test: /\.js?$/,
exclude: /(node_modules|bower_components)/,
loader: ['babel-loader'],
query: {
presets: ['es2015', 'react']
}
}]
}
plugins: [
new webpack.DefinePlugin({
'process.env': {
'NODE_ENV': JSON.stringify('production')
}
})
],
}
Make sure to use JSON.stringify to insert a string and not the variable production
You need to set the NODE_ENV to production. From the React site:
Note: by default, React will be in development mode. To use React in production mode, set the environment variable NODE_ENV to production (using envify or webpack's DefinePlugin).
Related
I need to use production build with Webpack. If I visit my site now in production icon is having red background which means it's not using production
When I do npm run build, it says npm ERR! missing script: build
How can I adjust webpack so I can make a production build and make my app faster?
Here is my webpack config:
const webpack = require('webpack');
const config = {
entry: ['babel-polyfill', './src/index.js'],
output: {
filename: 'bundle.js',
},
devServer: {
inline: true,
port: 8080,
historyApiFallback: true,
},
plugins: [
new webpack.DefinePlugin({
'process.env': {
API_KEY: 'API_KEY',
GOOGLE_MAPS_KEY: 'GOOGLE_MAPS_KEY',
GOOGLE_GEOLOCATION_KEY: 'GOOGLE_GEOLOCATION_KEY',
},
}),
],
module: {
loaders: [
{
test: /\.jsx?$/,
exclude: /node_modules/,
loader: 'babel-loader',
query: {
presets: ['es2015', 'react'],
},
},
{
test: /\.css$/,
loader: 'style!css',
},
],
},
};
module.exports = config;
plugins: [
new webpack.DefinePlugin({
'process.env': {
API_KEY: 'API_KEY',
GOOGLE_MAPS_KEY: 'GOOGLE_MAPS_KEY',
GOOGLE_GEOLOCATION_KEY: 'GOOGLE_GEOLOCATION_KEY',
NODE_ENV: JSON.stringify('production') // <--- this set everything to use production.
},
}),
],
I've read multiple threads regarding similar issues and tried some propositions, but had no results.
I've followed few tutorials related to React.js and WebPack 3. As the result the application is working well on all browsers (at this moment) except IE 10 and below. The error points to bundle.js (once I'm using the configuration Nr.1):
SCRIPT1002: Syntax error and the line - const url = __webpack_require__(83);
With configuration Nr2., on local server - : SCRIPT1002: Syntax error - line with eval()
And the same configuration, but running on remote server produces a bit different error:
SCRIPT5009: 'Set' is undefine
WebPack configuration Nr1.:
const HtmlWebpackPlugin = require('html-webpack-plugin');
const HtmlWebpackPluginConfig = new HtmlWebpackPlugin({
template: './index.html',
filename: 'index.html',
inject: 'body'
})
module.exports = {
entry: './index.js',
output: {
filename: 'bundle.js'
},
module: {
loaders: [
{
test: /\.json$/,
exclude: /node_modules/,
loader: 'json-loader'
},
{
test: /\.css$/,
loader: "style-loader!css-loader"
}
],
rules: [
{
test: /\.js$/,
exclude: /(node_modules)/,
use: {
loader: 'babel-loader',
options: {
presets: ['env', 'react']
}
}
}
]
},
devServer: {
historyApiFallback: true,
contentBase: './'
},
plugins: [HtmlWebpackPluginConfig]
}
WebPack configuration Nr2.:
const path = require('path');
const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const ExtractTextPlugin = require('extract-text-webpack-plugin');
const PreloadWebpackPlugin = require('preload-webpack-plugin');
const ScriptExtHtmlWebpackPlugin = require('script-ext-html-webpack-plugin');
const StyleExtHtmlWebpackPlugin = require('style-ext-html-webpack-plugin');
const CompressionPlugin = require('compression-webpack-plugin');
const autoprefixer = require('autoprefixer');
const staticSourcePath = path.join(__dirname, 'static');
const sourcePath = path.join(__dirname);
const buildPath = path.join(__dirname, 'dist');
module.exports = {
stats: {
warnings: false
},
devtool: 'cheap-eval-source-map',
devServer: {
historyApiFallback: true,
contentBase: './'
},
entry: {
app: path.resolve(sourcePath, 'index.js')
},
output: {
path: path.join(__dirname, 'dist'),
filename: '[name].[chunkhash].js',
publicPath: '/'
},
resolve: {
extensions: ['.webpack-loader.js', '.web-loader.js', '.loader.js', '.js', '.jsx'],
modules: [
sourcePath,
path.resolve(__dirname, 'node_modules')
]
},
plugins: [
new webpack.DefinePlugin({
'process.env.NODE_ENV': JSON.stringify('production')
}),
new webpack.optimize.ModuleConcatenationPlugin(),
new webpack.optimize.CommonsChunkPlugin({
name: 'vendor',
filename: 'vendor.[chunkhash].js',
minChunks: Infinity
}),
new webpack.LoaderOptionsPlugin({
options: {
postcss: [
autoprefixer({
browsers: [
'last 3 version',
'ie >= 10'
]
})
],
context: staticSourcePath
}
}),
new webpack.HashedModuleIdsPlugin(),
new HtmlWebpackPlugin({
template: path.join(__dirname, 'index.html'),
path: buildPath,
excludeChunks: ['base'],
filename: 'index.html',
minify: {
collapseWhitespace: true,
collapseInlineTagWhitespace: true,
removeComments: true,
removeRedundantAttributes: true
}
}),
new PreloadWebpackPlugin({
rel: 'preload',
as: 'script',
include: 'all',
fileBlacklist: [/\.(css|map)$/, /base?.+/]
}),
new webpack.NoEmitOnErrorsPlugin(),
new CompressionPlugin({
asset: '[path].gz[query]',
algorithm: 'gzip',
test: /\.js$|\.css$|\.html$|\.eot?.+$|\.ttf?.+$|\.woff?.+$|\.svg?.+$/,
threshold: 10240,
minRatio: 0.8
})
],
module: {
rules: [
{
test: /\.(js|jsx)$/,
exclude: /node_modules/,
use: {
loader: 'babel-loader',
options: {
presets: ['env', 'react', 'es2015'],
plugins: ["transform-es2015-arrow-functions"]
}
},
include: sourcePath
},
{
test: /\.css$/,
exclude: /node_modules/,
use: ExtractTextPlugin.extract({
fallback: 'style-loader',
use: [
{ loader: 'css-loader', options: { minimize: true } },
'postcss-loader',
'sass-loader'
]
})
},
{
test: /\.(eot?.+|svg?.+|ttf?.+|otf?.+|woff?.+|woff2?.+)$/,
use: 'file-loader?name=assets/[name]-[hash].[ext]'
},
{
test: /\.(png|gif|jpg|svg)$/,
use: [
'url-loader?limit=20480&name=assets/[name]-[hash].[ext]'
],
include: staticSourcePath
}
]
}
};
Here additionally I've added the es2015 to presets: ['env', 'react', 'es2015'] and plugins: ["transform-es2015-arrow-functions"] but it made no sense.
Well in case when the babel loader won't work at all of misconfiguration or something else, I think that the whole application won't start. I believe that something should be done with presets or their order... Need advice from experienced developer
UPDATE
I've changed devtool to inline-cheap-module-source-map and got error point to overlay.js -> const ansiHTML = require('ansi-html');
In your package.json file
change the version of webpack-dev-server to version "2.7.1" (or earlier).
"webpack-dev-server": "2.7.1"
Then do a npm install et voilà.
That solved the problem for me.
All versions after 2.7.1 gives me an error similar to yours.
Simply add devtools : "source-map" to your Webpack config like this:
const path = require('path');
module.exports = {
devtool: "source-map",
entry: ['babel-polyfill', path.resolve(__dirname, './js/main.js')],
mode: 'production',
output: {
path: __dirname+'/js/',
filename: 'main-webpack.js'
}
};
This will remove eval and change your source map to be supported by IE.
UPDATE I've changed devtool to inline-cheap-module-source-map and got error point to overlay.js -> const ansiHTML = require('ansi-html');
And to support ES6 syntax you have to compile your JavaScript code with Babel.
I'm trying to understand the innings and outings of webpack and it's quirks.
So i've set up a project working with webpack 1(i know it's outdated, but for now it will work for my needs), that coupled with react and redux.
While developing and testing locally it works like a charm all is good. when i try to set it to production it all goes A-wire. when i try to access the app i get a famous
Uncaught SyntaxError: Unexpected token <
While inspecting the firefox dev console and chrome dev console i see that on the sources the the html file is there, but the bundle is not.
The bundle is generated on the corresponding folder, either while in development mode, or in production mode.
I've tried the adding adding a dot for relative path, removing the dot on the relative path, moving the location of the js bundle file around, setting it to async and still no solution.
Bellow are the webpack config for development and production.
Development webpack file structure
const webpack = require('webpack');
const path = require('path');
//const CleanWebpackPlugin = require('clean-webpack-plugin');
module.exports = {
entry: ['whatwg-fetch','./src/index.js'],
module: {
devtool: 'source-map',
loaders: [
{
test: /\.js?$/,
loader: 'babel',
exclude: /node_modules/
},
{
test:/\.jsx$/,
loader: 'babel',
exclude: /node_modules/,
},
{
test: /\.scss$/,
loader: 'style!css!sass'
},{
test: /\.css$/,
loader: "style-loader!css-loader"
},
{
test: /\.png$/,
loader: "url-loader?limit=100000"
},
{
test: /\.jpg$/,
loader: "file-loader"
},
{
test: /\.(woff|woff2)(\?v=\d+\.\d+\.\d+)?$/,
loader: 'url?limit=10000&mimetype=application/font-woff'
},
{
test: /\.ttf(\?v=\d+\.\d+\.\d+)?$/,
loader: 'url?limit=10000&mimetype=application/octet-stream'
},
{
test: /\.eot(\?v=\d+\.\d+\.\d+)?$/,
loader: 'file'
},
{
test: /\.svg(\?v=\d+\.\d+\.\d+)?$/,
loader: 'url?limit=10000&mimetype=image/svg+xml'
}
]
},
resolve: {
extensions: ['', '.js','.jsx']
},
output: {
path: path.join(__dirname, '/dist'),
publicPath: '/',
filename: 'bundle.js'
},
devServer: {
contentBase: './dist',
hot: true
},
plugins: [
new webpack.optimize.OccurenceOrderPlugin(),
new webpack.HotModuleReplacementPlugin(),
new webpack.NoErrorsPlugin(),
/* new CleanWebpackPlugin(['dist'], {
verbose: true,
dry: false,
exclude: ['index.html','server.bundle.js','dbFactory.js','httpService.js']
}) */
]
};
Webpack production file structure
const config = require('./webpack.config.js');
const webpack = require('webpack');
config.plugins.push(
new webpack.DefinePlugin({
"process.env": {
"NODE_ENV": JSON.stringify("production")
}
})
);
config.plugins.push(
new webpack.optimize.UglifyJsPlugin({
comments:false,
minimize:true,
mangle:true,
compress: {
warnings: false,
sequences: true,
dead_code: true,
conditionals: true,
booleans: true,
unused: true,
if_return: true,
join_vars: true,
drop_console: true,
screw_ie8: true,
}
})
);
config.plugins.push(
new webpack.optimize.DedupePlugin()
);
/*
config.plugins.push(
new webpack.optimize.CommonsChunkPlugin({
name:'vendor',
entries:['history',
'react',
'react-dom',
'react-router',
'react-redux',
'redux'],
chunks:['vendor'],
minChunks:Infinity
})
);*/
module.exports = config;
The package.json command to generate the bundle is the following one
"postinstall": "webpack -p --config webpack.prod.config.js --progress --colors"
now with some more time to spare and some console.log abuse it looks like that the actual bundle was being created on the correct folder but it was not being obtained correctly by express.
One lesson learned is that always check your paths!
need a little help.
We had tried to deploy a react project, but we are unable to configure it.
We use: es6, webpack, redux, react, babel.
this is webpack base:
import ExtractTextPlugin from 'extract-text-webpack-plugin';
import HtmlWebpackPlugin from 'html-webpack-plugin';
export default {
entry: './app/app.js',
output: {
path: './app/App/dist',
filename: '/bundle.js',
},
module: {
loaders: [
{
test: /\.json$/,
loader: 'json',
},
{
test: /\.scss$/,
loader: ExtractTextPlugin.extract('css!sass'),
},
{
test: /\.css$/,
loader: ExtractTextPlugin.extract('css!sass'),
},
{
test: /\.jsx?$/,
exclude: /node_modules/,
loader: 'babel-loader',
},
{
test: /\.svg$/,
loader: 'babel?presets[]=es2015,presets[]=react!svg-react',
},
],
},
plugins: [
new HtmlWebpackPlugin({
template: './app/App/index.html',
}),
new ExtractTextPlugin('/app/App/css/default.css', {
allChunks: true,
}),
],
};
webpack dev:
import webpack from 'webpack';
import baseConfig from './webpack.config.base';
const config = {
...baseConfig,
debug: true,
devtool: 'cheap-module-eval-source-map',
plugins: [
...baseConfig.plugins,
new webpack.HotModuleReplacementPlugin(),
],
devServer: {
colors: true,
historyApiFallback: true,
inline: true,
hot: true,
},
};
export default config;
webpack prod:
import webpack from 'webpack';
import baseConfig from './webpack.config.base';
const config = {
...baseConfig,
plugins: [
...baseConfig.plugins,
new webpack.DefinePlugin({
'process.env': {
NODE_ENV: JSON.stringify('production'),
},
}),
new webpack.optimize.OccurrenceOrderPlugin(),
new webpack.optimize.UglifyJsPlugin({
compressor: {
screw_ie8: true,
warnings: false,
},
}),
],
};
export default config;
This is our actual webpack, we are trying to deploy the project with it, but does not work.
Does anyone have an idea how to configure it?
So, it's a server problem probably. You need a HTTP server in order to server the static files (your app basically). I recommend the Ngxin, very easy to configure and use.
After install nginx, delete the /etc/nginx/sites-enable/default file and create a new one (you can use whatever name you want here). Here's the config I use:
server {
listen 80;
listen [::]:80;
server_name example.com;
location / {
root /var/html/myProject/;
try_files $uri /index.html;
}
}
after that, restart nginx and should be ready to go.
for webpack, I have a simpler config that works well:
const path = require("path");
const webpack = require("webpack");
const ExtractTextPlugin = require("extract-text-webpack-plugin");
const HtmlWebpackPlugin = require('html-webpack-plugin');
const isProd = process.env.NODE_ENV && process.env.NODE_ENV.toLowerCase() == 'production';
const plugins = [
new ExtractTextPlugin(isProd ? 'bundle.[hash].css' : 'bundle.css', { allChunks: true }),
new HtmlWebpackPlugin({
template: 'index.html',
inject: 'body',
filename: 'index.html'
}),
new webpack.DefinePlugin({
'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV || 'development')
})
];
const prodPlugins = [
new webpack.optimize.DedupePlugin(),
new webpack.optimize.UglifyJsPlugin(),
new webpack.optimize.AggressiveMergingPlugin()
];
module.exports = {
devtool: isProd ? 'cheap-module-source-map' : 'eval',
entry: [
'./src/index.jsx'
],
output: {
path: isProd ? path.join(__dirname, 'dist') : __dirname,
publicPath: '/',
filename: isProd ? 'bundle.[hash].js' : 'bundle.js'
},
module: {
loaders: [{
exclude: /node_modules/,
loader: 'babel',
query: {
presets: ['react', 'es2015', 'stage-1']
}
},
{
test: /\.(scss|css|sass)$/,
loader: ExtractTextPlugin.extract('css!sass')
},
{
test: /\.(png|woff|woff2|eot|ttf|svg)(\?v=[0-9]\.[0-9]\.[0-9])?$/,
loader: 'url'
},
{
test: /\.html$/,
loader: 'html'
}]
},
resolve: {
extensions: ['', '.js', '.jsx']
},
devServer: {
historyApiFallback: true,
contentBase: './'
},
plugins: isProd ? prodPlugins.concat(plugins) : plugins
};
A few points:
I'm using SASS
Check the path's before run anything
To compile for production, just run NODE_ENV=production webpack -p
I'm using a few plugins for Uglify JS and compress files.
I think that's it! Cheers!
sure I think the fastest way to solve your problem is to click on this link:
React starter kit
and select any starters that matches your technologies!
I think you are looking for this one : react-boilerplate
I started learning React by myself and I decided to create a boilerplate for me. I'm getting a problem to build a project using webpack. When I run in dev mode, works fine. When I run the command 'postinstall' to build for production, it generates a bundle.js with only a few bytes. But when I run the 'postinstall' without the parameter -p, it generates my bundle with ~ 2MB, the same thing when generates for dev mode (obviously because is not set for production). I didn't figure out why the production flag isn't creating my bundle correct. Can someone help me with this problem?
The project is in the repository:
https://github.com/ribeiroguilherme/react-boilerplate-dashboard
The webpack.production.config.js file:
const webpack = require('webpack');
const path = require('path');
const ExtractPlugin = require('extract-text-webpack-plugin');
const CleanPlugin = require('clean-webpack-plugin');
const plugins = [
new CleanPlugin('dist'),
new ExtractPlugin('bundle.css'),
new webpack.optimize.DedupePlugin(),
new webpack.optimize.UglifyJsPlugin({ minimize: true }),
new webpack.optimize.AggressiveMergingPlugin(),
new webpack.DefinePlugin({
'process.env': {
NODE_ENV: JSON.stringify('production'),
},
}),
];
module.exports = {
devtool: 'eval',
debug: false,
context: __dirname + '/src/client',
entry: {
javascript: './index.jsx',
html: './index.html',
},
output: {
filename: 'bundle.js',
path: __dirname + '/dist',
},
resolve: {
extensions: ['', '.js', '.jsx', '.json'],
root: path.resolve(__dirname, './src/client'),
},
eslint: {
configFile: './.eslintrc',
},
module: {
preLoaders: [
{
test: /\.jsx?$/,
exclude: /node_modules/,
loader: 'eslint-loader',
},
],
loaders: [
{
test: /\.jsx?$/,
exclude: /node_modules/,
loaders: ['babel-loader'],
},
{
test: /\.html$/,
loader: 'file?name=[name].[ext]',
},
{
test: /\.css$/,
loader: ExtractPlugin.extract('style-loader', 'css-loader'),
},
],
},
plugins: plugins,
};
I'm also worried because the bundle looks pretty big for a project that I just started now. Any hints will be very appreciated.
Best Regards