Keeping the frontend under control with Symfony and Webpack
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The document discusses managing frontend development with Symfony and Webpack, highlighting the need for a structured approach due to the complexity of modern JavaScript with module loading and bundling. It provides practical examples of setting up a Webpack configuration, using Babel for JavaScript transpilation, and optimizing the build process for production, including handling styles and assets. Additionally, it covers using development tools such as Webpack Dev Server for live reloading and hot module replacement.
![Webpack without configuration
$ webpack client/js/index.js web/assets/build/hello.js
Hash: 4f4f05e78036f9dc67f3
Version: webpack 1.13.2
Time: 100ms
Asset Size Chunks Chunk Names
hi.js 1.59 kB 0 [emitted] main
[0] ./client/js/index.js 57 bytes {0} [built]
[1] ./client/js/greeter.js 66 bytes {0} [built]](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-27-320.jpg)
![Webpack config
module.exports = {
entry: {
hello: './client/js/index.js'
},
output: {
publicPath: '/assets/build/',
path: './web/assets/build',
filename: '[name].js'
}
};
webpack.config.js](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-29-320.jpg)
![Webpack config
module.exports = {
entry: {
hello: './client/js/index.js'
},
output: {
publicPath: '/assets/build/',
path: './web/assets/build',
filename: '[name].js'
}
};
webpack.config.js](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-30-320.jpg)
![Install babel
$ npm install --save-dev babel-core
babel-loader babel-preset-es2015
module.exports = {
entry: {
hello: './client/js/index.js'
},
output: {
publicPath: '/assets/build/',
path: './web/assets/build',
filename: '[name].js'
},
module: {
loaders: [
{
test: /.js$/,
loader: 'babel-loader',
exclude: /node_modules/
},
]
}
};
webpack.config.js](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-37-320.jpg)
![Install babel
$ npm install --save-dev babel-core
babel-loader babel-preset-es2015
module.exports = {
entry: {
hello: './client/js/index.js'
},
output: {
publicPath: '/assets/build/',
path: './web/assets/build',
filename: '[name].js'
},
module: {
loaders: [
{
test: /.js$/,
loader: 'babel-loader',
exclude: /node_modules/
},
]
}
};
webpack.config.js](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-38-320.jpg)
![Install babel
$ npm install --save-dev babel-core
babel-loader babel-preset-es2015
module.exports = {
entry: {
hello: './client/js/index.js'
},
output: {
publicPath: '/assets/build/',
path: './web/assets/build',
filename: '[name].js'
},
module: {
loaders: [
{
test: /.js$/,
loader: 'babel-loader',
exclude: /node_modules/
},
]
}
};
webpack.config.js .babelrc
{
"presets": ["es2015"]
}](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-39-320.jpg)
![Install babel
$ npm install --save-dev babel-core
babel-loader babel-preset-es2015
module.exports = {
entry: {
hello: './client/js/index.js'
},
output: {
publicPath: '/assets/build/',
path: './web/assets/build',
filename: '[name].js'
},
module: {
loaders: [
{
test: /.js$/,
loader: 'babel-loader',
exclude: /node_modules/
},
]
}
};
webpack.config.js .babelrc
{
"presets": ["es2015"]
}](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-40-320.jpg)
![Loading styles: raw*
loaders: [
//…
{ test: /.css$/i, loader: 'raw'},
]
exports.push([module.id, "body {n line-height: 1.5;n padding: 4em 1em;n}nnh2 {n
margin-top: 1em;n padding-top: 1em;n}nnh1,nh2,nstrong {n color: #333;n}nna
{n color: #e81c4f;n}nn", ""]);
Embeds it into JavaScript, but…
*(note: if you are reading the slides, don’t use this loader for css. Use css loader, that will be explained later)](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-44-320.jpg)
![Chaining styles: style
loaders: [
//…
{ test: /.css$/i, loader: ’style!raw'},
]](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-45-320.jpg)
![CSS loader
header {
background-image: url("../img/header.jpg");
}
url(image.png) => require("./image.png")
url(~module/image.png) => require("module/image.png")
We want
Problem
loaders: [
//…
{ test: /.css$/i, loader: ’style!css'},
]
Solution](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-48-320.jpg)
![File loaders
{ test: /.jpg$/, loader: 'file-loader' },
{ test: /.png$/, loader: 'url-loader?limit=10000' },
Copies file as [hash].jpg, and returns the public url
If file < 10Kb: embed it in data URL.
If > 10Kb: use file-loader](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-49-320.jpg)
![SASS
{ test: /.scss$/i, loader: 'style!css!sass'},
In webpack.config.js, compact
$ npm install --save-dev sass-loader node-sass
Also
{
test: /.scss$/i,
loaders: [ 'style', 'css', 'sass' ]
},](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-51-320.jpg)
![ExtractTextPlugin
var ExtractTextPlugin = require("extract-text-webpack-plugin");
const extractCSS = new ExtractTextPlugin('stylesheets/[name].css');
const config = {
//…
module: {
loaders: [
{ test: /.css$/i, loader: extractCSS.extract(['css'])},
//…
]
},
plugins: [
extractCSS,
//…
]
};
{% block stylesheets %}
<link href="{{asset('assets/build/stylesheets/hello.css')}}"
rel="stylesheet">
{% endblock %}
app/Resources/base.html.twig
webpack.config.js](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-53-320.jpg)
![ExtractTextPlugin
var ExtractTextPlugin = require("extract-text-webpack-plugin");
const extractCSS = new ExtractTextPlugin('stylesheets/[name].css');
const config = {
//…
module: {
loaders: [
{ test: /.css$/i, loader: extractCSS.extract(['css'])},
//…
]
},
plugins: [
extractCSS,
//…
]
};
{% block stylesheets %}
<link href="{{asset('assets/build/stylesheets/hello.css')}}"
rel="stylesheet">
{% endblock %}
app/Resources/base.html.twig
webpack.config.js
{ test: /.scss$/i, loader: extractCSS.extract(['css','sass'])},
Also](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-54-320.jpg)
![Optional web-dev-server
Kudos Ryan Weaver
class AppKernel extends Kernel
{
public function registerContainerConfiguration(LoaderInterface $loader)
{
//…
$loader->load(function($container) {
if ($container->getParameter('use_webpack_dev_server')) {
$container->loadFromExtension('framework', [
'assets' => [
'base_url' => 'http://localhost:8080'
]
]);
}
});
}
}](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-60-320.jpg)
![Hot module replacement
output: {
publicPath: 'http://localhost:8080/assets/build/',
path: './web/assets/build',
filename: '[name].js'
},
Will try to replace the code without even page reload
$ webpack-dev-server --hot --inline](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-61-320.jpg)
![Hot module replacement
output: {
publicPath: 'http://localhost:8080/assets/build/',
path: './web/assets/build',
filename: '[name].js'
},
Will try to replace the code without even page reload
Needs full URL (so only in dev), or…
$ webpack-dev-server --hot --inline](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-62-320.jpg)
![Hot module replacement
output: {
publicPath: 'http://localhost:8080/assets/build/',
path: './web/assets/build',
filename: '[name].js'
},
$ webpack-dev-server --hot --inline --output-public-path
http://localhost:8080/assets/build/
Will try to replace the code without even page reload
Needs full URL (so only in dev), or…
$ webpack-dev-server --hot --inline](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-63-320.jpg)
![Notifier
$ npm install --save-dev webpack-notifier
module.exports = {
//…
plugins: [
new WebpackNotifierPlugin(),
]
};
webpack.config.js](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-66-320.jpg)
![Notifier
$ npm install --save-dev webpack-notifier
module.exports = {
//…
plugins: [
new WebpackNotifierPlugin(),
]
};
webpack.config.js](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-67-320.jpg)
![Notifier
$ npm install --save-dev webpack-notifier
module.exports = {
//…
plugins: [
new WebpackNotifierPlugin(),
]
};
webpack.config.js](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-68-320.jpg)
![Separate entry points
var config = {
entry: {
front: './assets/js/front.js',
admin: './assets/js/admin.js',
},
output: {
publicPath: '/assets/build/',
path: './web/assets/build/',
filename: '[name].js'
},](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-76-320.jpg)
![Vendor bundles
var config = {
entry: {
front: './assets/js/front.js',
admin: './assets/js/admin.js',
'vendor-admin': [
'lodash',
'moment',
'classnames',
'react',
'redux',
]
},
plugins: [
extractCSS,
new webpack.optimize.CommonsChunkPlugin({
name: 'vendor-admin',
chunks: ['admin'],
filename: 'vendor-admin.js',
minChunks: Infinity
}),](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-77-320.jpg)
![Common Chunks
var CommonsChunkPlugin = require(“webpack/lib/optimize/CommonsChunkPlugin”);
module.exports = {
entry: {
page1: "./page1",
page2: "./page2",
},
output: {
filename: "[name].chunk.js"
},
plugins: [
new CommonsChunkPlugin("commons.chunk.js")
]
}
Produces page1.chunk.js, page2.chunk.js and commons.chunk.js](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-78-320.jpg)
![On demand loading
class Greeter {
constructor(salutation = 'Hello') {
this.salutation = salutation;
}
greet(name = 'Nacho', goodbye = true) {
const greeting = `${this.salutation}, ${name}!`;
console.log(greeting);
if (goodbye) {
require.ensure(['./goodbyer'], function(require) {
var goodbyer = require('./goodbyer');
goodbyer(name);
});
}
}
}
export default Greeter;
module.exports = function(name) {
console.log('Goodbye '+name);
}
greeter.js
goodbyer.js](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-79-320.jpg)
![On demand loading
class Greeter {
constructor(salutation = 'Hello') {
this.salutation = salutation;
}
greet(name = 'Nacho', goodbye = true) {
const greeting = `${this.salutation}, ${name}!`;
console.log(greeting);
if (goodbye) {
require.ensure(['./goodbyer'], function(require) {
var goodbyer = require('./goodbyer');
goodbyer(name);
});
}
}
}
export default Greeter;
module.exports = function(name) {
console.log('Goodbye '+name);
}
greeter.js
goodbyer.js](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-80-320.jpg)
![Hashes
output: {
publicPath: '/assets/build/',
path: './web/assets/build',
filename: '[name].js',
chunkFilename: "[id].[hash].bundle.js"
},](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-81-320.jpg)
![Provide plugin
plugins: [
new webpack.ProvidePlugin({
_: 'lodash',
$: 'jquery',
}),
]
$("#item")
_.find(users, { 'age': 1, 'active': true });
These just work without requiring them:](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-84-320.jpg)
![CopyWebpackPlugin for messes
new CopyWebpackPlugin([
{ from: './client/messyvendors', to: './../mess' }
]),
For vendors that are broken,
can’t make work with Webpack but I still need them
(during the transition)](https://image.slidesharecdn.com/webpacksf-161012205636/85/Keeping-the-frontend-under-control-with-Symfony-and-Webpack-87-320.jpg)
Keeping the frontend under control with Symfony and Webpack
- 1. Keeping the frontend under control with Symfony and Webpack Nacho Martín @nacmartin nacho@limenius.com Munich Symfony Meetup October’16
- 2. I write code at Limenius We build tailor made projects using mainly Symfony and React.js So we have been figuring out how to organize better the frontend Nacho Martín nacho@limenius.com @nacmartin
- 3. Why do we need this?
- 4. Assetic? No module loading No bundle orientation Not a standard solution for frontenders Other tools simply have more manpower behind Written before the Great Frontend Revolution
- 5. Building the Pyramids: 130K man years
- 6. Writing JavaScript: 10 man days JavaScript
- 7. Making JavaScript great: NaN man years JavaScript
- 8. Tendencies
- 11. Tendency Task runners Bundlers Task runners + understanding of require(ments)
- 12. Tendency Task runners Bundlers Task runners + understanding of require(ments)
- 13. Package management in JS Server Side (node.js) Bower Client side (browser) Used to be
- 14. Package management in JS Server Side (node.js) Bower Client side (browser) Used to be Now Everywhere
- 15. Module loaders Server Side (node.js) Client side (browser) Used to be
- 16. Module loaders Server Side (node.js) Client side (browser) Used to be Now Everywhere &ES6 Style
- 17. Summarizing Package manager Module loader Module bundler
- 18. Setup
- 22. NPM setup $ npm init $ cat package.json { "name": "webpacksf", "version": "1.0.0", "description": "Webpack & Symfony example", "main": "client/js/index.js", "directories": { "test": "client/js/tests" }, "scripts": { "test": "echo "Error: no test specified" && exit 1" }, "author": "Nacho Martín", "license": "MIT" }
- 23. Install Webpack $ npm install -g webpack $ npm install --save-dev webpack Or, to install it globally
- 24. First example var greeter = require('./greeter.js') greeter('Nacho'); client/js/index.js
- 25. First example var greeter = require('./greeter.js') greeter('Nacho'); client/js/index.js var greeter = function(name) { console.log('Hi '+name+'!'); } module.exports = greeter; client/js/greeter.js
- 26. First example var greeter = require('./greeter.js') greeter('Nacho'); client/js/index.js var greeter = function(name) { console.log('Hi '+name+'!'); } module.exports = greeter; client/js/greeter.js
- 27. Webpack without configuration $ webpack client/js/index.js web/assets/build/hello.js Hash: 4f4f05e78036f9dc67f3 Version: webpack 1.13.2 Time: 100ms Asset Size Chunks Chunk Names hi.js 1.59 kB 0 [emitted] main [0] ./client/js/index.js 57 bytes {0} [built] [1] ./client/js/greeter.js 66 bytes {0} [built]
- 28. Webpack without configuration <!DOCTYPE html> <html> <head> <meta charset="UTF-8" /> <title>{% block title %}Webpack & Symfony!{% endblock %}</title> {% block stylesheets %}{% endblock %} <link rel="icon" type="image/x-icon" href="{{ asset('favicon.ico') }}" /> </head> <body> {% block body %}{% endblock %} {% block javascripts %} <script src="{{ asset('assets/build/hello.js') }}"></script> {% endblock %} </body> </html> app/Resources/base.html.twig
- 29. Webpack config module.exports = { entry: { hello: './client/js/index.js' }, output: { publicPath: '/assets/build/', path: './web/assets/build', filename: '[name].js' } }; webpack.config.js
- 30. Webpack config module.exports = { entry: { hello: './client/js/index.js' }, output: { publicPath: '/assets/build/', path: './web/assets/build', filename: '[name].js' } }; webpack.config.js
- 31. Loaders
- 32. Now that we have modules, What about using modern JavaScript? (without caring about IE support)
- 33. Now that we have modules, What about using modern JavaScript? (without caring about IE support)
- 34. JavaScript ES2015 •Default Parameters •Template Literals •Arrow Functions •Promises •Block-Scoped Constructs Let and Const •Classes •Modules •…
- 35. Why Babel matters import Greeter from './greeter.js'; let greeter = new Greeter('Hi'); greeter.greet('gentlemen'); class Greeter { constructor(salutation = 'Hello') { this.salutation = salutation; } greet(name = 'Nacho') { const greeting = `${this.salutation}, ${name}!`; console.log(greeting); } } export default Greeter; client/js/index.js client/js/greeter.js
- 36. Install babel $ npm install --save-dev babel-core babel-loader babel-preset-es2015
- 37. Install babel $ npm install --save-dev babel-core babel-loader babel-preset-es2015 module.exports = { entry: { hello: './client/js/index.js' }, output: { publicPath: '/assets/build/', path: './web/assets/build', filename: '[name].js' }, module: { loaders: [ { test: /.js$/, loader: 'babel-loader', exclude: /node_modules/ }, ] } }; webpack.config.js
- 38. Install babel $ npm install --save-dev babel-core babel-loader babel-preset-es2015 module.exports = { entry: { hello: './client/js/index.js' }, output: { publicPath: '/assets/build/', path: './web/assets/build', filename: '[name].js' }, module: { loaders: [ { test: /.js$/, loader: 'babel-loader', exclude: /node_modules/ }, ] } }; webpack.config.js
- 39. Install babel $ npm install --save-dev babel-core babel-loader babel-preset-es2015 module.exports = { entry: { hello: './client/js/index.js' }, output: { publicPath: '/assets/build/', path: './web/assets/build', filename: '[name].js' }, module: { loaders: [ { test: /.js$/, loader: 'babel-loader', exclude: /node_modules/ }, ] } }; webpack.config.js .babelrc { "presets": ["es2015"] }
- 40. Install babel $ npm install --save-dev babel-core babel-loader babel-preset-es2015 module.exports = { entry: { hello: './client/js/index.js' }, output: { publicPath: '/assets/build/', path: './web/assets/build', filename: '[name].js' }, module: { loaders: [ { test: /.js$/, loader: 'babel-loader', exclude: /node_modules/ }, ] } }; webpack.config.js .babelrc { "presets": ["es2015"] }
- 44. Loading styles: raw* loaders: [ //… { test: /.css$/i, loader: 'raw'}, ] exports.push([module.id, "body {n line-height: 1.5;n padding: 4em 1em;n}nnh2 {n margin-top: 1em;n padding-top: 1em;n}nnh1,nh2,nstrong {n color: #333;n}nna {n color: #e81c4f;n}nn", ""]); Embeds it into JavaScript, but… *(note: if you are reading the slides, don’t use this loader for css. Use css loader, that will be explained later)
- 45. Chaining styles: style loaders: [ //… { test: /.css$/i, loader: ’style!raw'}, ]
- 46. CSS loader header { background-image: url("../img/header.jpg"); } Problem
- 47. CSS loader header { background-image: url("../img/header.jpg"); } url(image.png) => require("./image.png") url(~module/image.png) => require("module/image.png") We want Problem
- 48. CSS loader header { background-image: url("../img/header.jpg"); } url(image.png) => require("./image.png") url(~module/image.png) => require("module/image.png") We want Problem loaders: [ //… { test: /.css$/i, loader: ’style!css'}, ] Solution
- 49. File loaders { test: /.jpg$/, loader: 'file-loader' }, { test: /.png$/, loader: 'url-loader?limit=10000' }, Copies file as [hash].jpg, and returns the public url If file < 10Kb: embed it in data URL. If > 10Kb: use file-loader
- 50. Using loaders When requiring a file In webpack.config.js, verbose { test: /.png$/, loader: "url-loader", query: { limit: "10000" } } require("url-loader?limit=10000!./file.png"); { test: /.png$/, loader: 'url-loader?limit=10000' }, In webpack.config.js, compact
- 51. SASS { test: /.scss$/i, loader: 'style!css!sass'}, In webpack.config.js, compact $ npm install --save-dev sass-loader node-sass Also { test: /.scss$/i, loaders: [ 'style', 'css', 'sass' ] },
- 52. Embedding CSS in JS is good in Single Page Apps What if I am not writing a Single Page App?
- 53. ExtractTextPlugin var ExtractTextPlugin = require("extract-text-webpack-plugin"); const extractCSS = new ExtractTextPlugin('stylesheets/[name].css'); const config = { //… module: { loaders: [ { test: /.css$/i, loader: extractCSS.extract(['css'])}, //… ] }, plugins: [ extractCSS, //… ] }; {% block stylesheets %} <link href="{{asset('assets/build/stylesheets/hello.css')}}" rel="stylesheet"> {% endblock %} app/Resources/base.html.twig webpack.config.js
- 54. ExtractTextPlugin var ExtractTextPlugin = require("extract-text-webpack-plugin"); const extractCSS = new ExtractTextPlugin('stylesheets/[name].css'); const config = { //… module: { loaders: [ { test: /.css$/i, loader: extractCSS.extract(['css'])}, //… ] }, plugins: [ extractCSS, //… ] }; {% block stylesheets %} <link href="{{asset('assets/build/stylesheets/hello.css')}}" rel="stylesheet"> {% endblock %} app/Resources/base.html.twig webpack.config.js { test: /.scss$/i, loader: extractCSS.extract(['css','sass'])}, Also
- 55. Dev tools
- 56. Webpack-watch $ webpack --watch Simply watches for changes and recompiles the bundle
- 57. Webpack-dev-server $ webpack-dev-server —inline http://localhost:8080/webpack-dev-server/ Starts a server. The browser opens a WebSocket connection with it and reloads automatically when something changes.
- 58. Webpack-dev-server config Sf {% block javascripts %} <script src="{{ asset('assets/build/hello.js', 'webpack') }}"></script> {% endblock %} app/Resources/base.html.twig framework: assets: packages: webpack: base_urls: - "%assets_base_url%" app/config/config_dev.yml parameters: #… assets_base_url: 'http://localhost:8080' app/config/parameters.yml
- 59. Webpack-dev-server config Sf {% block javascripts %} <script src="{{ asset('assets/build/hello.js', 'webpack') }}"></script> {% endblock %} app/Resources/base.html.twig framework: assets: packages: webpack: base_urls: - "%assets_base_url%" app/config/config_dev.yml framework: assets: packages: webpack: ~ app/config/config.yml parameters: #… assets_base_url: 'http://localhost:8080' app/config/parameters.yml
- 60. Optional web-dev-server Kudos Ryan Weaver class AppKernel extends Kernel { public function registerContainerConfiguration(LoaderInterface $loader) { //… $loader->load(function($container) { if ($container->getParameter('use_webpack_dev_server')) { $container->loadFromExtension('framework', [ 'assets' => [ 'base_url' => 'http://localhost:8080' ] ]); } }); } }
- 61. Hot module replacement output: { publicPath: 'http://localhost:8080/assets/build/', path: './web/assets/build', filename: '[name].js' }, Will try to replace the code without even page reload $ webpack-dev-server --hot --inline
- 62. Hot module replacement output: { publicPath: 'http://localhost:8080/assets/build/', path: './web/assets/build', filename: '[name].js' }, Will try to replace the code without even page reload Needs full URL (so only in dev), or… $ webpack-dev-server --hot --inline
- 63. Hot module replacement output: { publicPath: 'http://localhost:8080/assets/build/', path: './web/assets/build', filename: '[name].js' }, $ webpack-dev-server --hot --inline --output-public-path http://localhost:8080/assets/build/ Will try to replace the code without even page reload Needs full URL (so only in dev), or… $ webpack-dev-server --hot --inline
- 64. SourceMaps const devBuild = process.env.NODE_ENV !== ‘production'; /… if (devBuild) { console.log('Webpack dev build'); config.devtool = 'eval-source-map'; } else {
- 65. SourceMaps const devBuild = process.env.NODE_ENV !== ‘production'; /… if (devBuild) { console.log('Webpack dev build'); config.devtool = 'eval-source-map'; } else { eval source-map hidden-source-map inline-source-map eval-source-map cheap-source-map cheap-module-source-map Several options:
- 66. Notifier $ npm install --save-dev webpack-notifier module.exports = { //… plugins: [ new WebpackNotifierPlugin(), ] }; webpack.config.js
- 67. Notifier $ npm install --save-dev webpack-notifier module.exports = { //… plugins: [ new WebpackNotifierPlugin(), ] }; webpack.config.js
- 68. Notifier $ npm install --save-dev webpack-notifier module.exports = { //… plugins: [ new WebpackNotifierPlugin(), ] }; webpack.config.js
- 70. Optimization options var WebpackNotifierPlugin = require('webpack-notifier'); var webpack = require(‘webpack'); const devBuild = process.env.NODE_ENV !== 'production'; const config = { entry: { hello: './client/js/index.js' }, //… }; if (devBuild) { console.log('Webpack dev build'); config.devtool = 'eval-source-map'; } else { console.log('Webpack production build'); config.plugins.push( new webpack.optimize.DedupePlugin() ); config.plugins.push( new webpack.optimize.UglifyJsPlugin({ compress: { warnings: false } }) ); } module.exports = config;
- 71. Optimization options var WebpackNotifierPlugin = require('webpack-notifier'); var webpack = require(‘webpack'); const devBuild = process.env.NODE_ENV !== 'production'; const config = { entry: { hello: './client/js/index.js' }, //… }; if (devBuild) { console.log('Webpack dev build'); config.devtool = 'eval-source-map'; } else { console.log('Webpack production build'); config.plugins.push( new webpack.optimize.DedupePlugin() ); config.plugins.push( new webpack.optimize.UglifyJsPlugin({ compress: { warnings: false } }) ); } module.exports = config; $ export NODE_ENV=production; webpack
- 72. Optimization options var WebpackNotifierPlugin = require('webpack-notifier'); var webpack = require(‘webpack'); const devBuild = process.env.NODE_ENV !== 'production'; const config = { entry: { hello: './client/js/index.js' }, //… }; if (devBuild) { console.log('Webpack dev build'); config.devtool = 'eval-source-map'; } else { console.log('Webpack production build'); config.plugins.push( new webpack.optimize.DedupePlugin() ); config.plugins.push( new webpack.optimize.UglifyJsPlugin({ compress: { warnings: false } }) ); } module.exports = config; $ export NODE_ENV=production; webpack
- 73. Bundle visualizer $ webpack --json > stats.json https://chrisbateman.github.io/webpack-visualizer/
- 74. Bundle visualizer $ webpack --json > stats.json https://chrisbateman.github.io/webpack-visualizer/
- 75. More than one bundle
- 76. Separate entry points var config = { entry: { front: './assets/js/front.js', admin: './assets/js/admin.js', }, output: { publicPath: '/assets/build/', path: './web/assets/build/', filename: '[name].js' },
- 77. Vendor bundles var config = { entry: { front: './assets/js/front.js', admin: './assets/js/admin.js', 'vendor-admin': [ 'lodash', 'moment', 'classnames', 'react', 'redux', ] }, plugins: [ extractCSS, new webpack.optimize.CommonsChunkPlugin({ name: 'vendor-admin', chunks: ['admin'], filename: 'vendor-admin.js', minChunks: Infinity }),
- 78. Common Chunks var CommonsChunkPlugin = require(“webpack/lib/optimize/CommonsChunkPlugin”); module.exports = { entry: { page1: "./page1", page2: "./page2", }, output: { filename: "[name].chunk.js" }, plugins: [ new CommonsChunkPlugin("commons.chunk.js") ] } Produces page1.chunk.js, page2.chunk.js and commons.chunk.js
- 79. On demand loading class Greeter { constructor(salutation = 'Hello') { this.salutation = salutation; } greet(name = 'Nacho', goodbye = true) { const greeting = `${this.salutation}, ${name}!`; console.log(greeting); if (goodbye) { require.ensure(['./goodbyer'], function(require) { var goodbyer = require('./goodbyer'); goodbyer(name); }); } } } export default Greeter; module.exports = function(name) { console.log('Goodbye '+name); } greeter.js goodbyer.js
- 80. On demand loading class Greeter { constructor(salutation = 'Hello') { this.salutation = salutation; } greet(name = 'Nacho', goodbye = true) { const greeting = `${this.salutation}, ${name}!`; console.log(greeting); if (goodbye) { require.ensure(['./goodbyer'], function(require) { var goodbyer = require('./goodbyer'); goodbyer(name); }); } } } export default Greeter; module.exports = function(name) { console.log('Goodbye '+name); } greeter.js goodbyer.js
- 81. Hashes output: { publicPath: '/assets/build/', path: './web/assets/build', filename: '[name].js', chunkFilename: "[id].[hash].bundle.js" },
- 82. Chunks are very configurable https://webpack.github.io/docs/optimization.html
- 83. Practical cases
- 84. Provide plugin plugins: [ new webpack.ProvidePlugin({ _: 'lodash', $: 'jquery', }), ] $("#item") _.find(users, { 'age': 1, 'active': true }); These just work without requiring them:
- 85. Exposing jQuery { test: require.resolve('jquery'), loader: 'expose?$!expose?jQuery' }, Exposes $ and jQuery globally in the browser
- 86. Dealing with a mess require('imports?define=>false&exports=>false!blueimp-file-upload/js/vendor/jquery.ui.widget.js'); require('imports?define=>false&exports=>false!blueimp-load-image/js/load-image-meta.js'); require('imports?define=>false&exports=>false!blueimp-file-upload/js/jquery.iframe-transport.js'); require('imports?define=>false&exports=>false!blueimp-file-upload/js/jquery.fileupload.js'); require('imports?define=>false&exports=>false!blueimp-file-upload/js/jquery.fileupload-process.js'); require('imports?define=>false&exports=>false!blueimp-file-upload/js/jquery.fileupload-image.js'); require('imports?define=>false&exports=>false!blueimp-file-upload/js/jquery.fileupload.js'); require('imports?define=>false&exports=>false!blueimp-file-upload/js/jquery.fileupload-validate.js'); require('imports?define=>false&exports=>false!blueimp-file-upload/js/jquery.fileupload-ui.js'); Broken packages that are famous have people that have figured out how to work with them
- 87. CopyWebpackPlugin for messes new CopyWebpackPlugin([ { from: './client/messyvendors', to: './../mess' } ]), For vendors that are broken, can’t make work with Webpack but I still need them (during the transition)
- 88. Summary:
- 89. Summary: • What is Webpack • Basic setup • Loaders are the bricks of Webpack • Have nice tools in Dev environment • Optimize in Prod environment • Split your bundle as you need • Tips and tricks
- 90. MADRID · NOV 27-28 · 2015 Thanks! @nacmartin nacho@limenius.com http://limenius.com