Webpack 4 Demo · Legato 🎶

Demo project to start using and experiment with Webpack 4

Start

Restore dependencies and start development server:

yarn && yarn dev

Check your browser console at localhost:8080

Features

• entry / output custom config.
• chunk splitting (app | vendors)
• html creation: html-webpack-plugin
• copying files: copy-webpack-plugin
• webpack-dev-server
• Sass support
• Hot Module Replacement

Webpack

Install webpack

yarn add webpack webpack-cli --dev

# add webpack 4 (currently on 4.0.0-beta.2)
yarn add [email protected] webpack-cli --dev

Zero Config (#0CJS)

Entry / Output

No need for explicit specify entry and output properties in the webpack configuration.

In Webpack 4 those fields are defaulted to:

{
    "entry": "./src",
    "output": "./dist"
}

Mode

Webpack mode reduce the required configuration for an useful build:

• development: this mode provide useful error messages and is optimized for speed (unminified bundle)
• production: enables optimizations out of the box (scope hoisting, tree shaking, minification, etc.)

webpack --mode production

There is also another hidden none mode which disables everything (available only inside the configuration object).

Changes

• Dropped Node.js 4 support. Therefore, more benefits from ES6 features (optimizations from V8).
• Sets of defaults with production and development modes.
• Changes on plugins (Some actives depending on mode. CommonsChunkPlugin was removed)
• Optimizations, performance boost and many more...
• Read changeset of Webpack v4.0.0

Articles

• 🚀 webpack 4 beta — try it today! 🚀
• webpack 4: mode and optimization
• webpack 4: import() and CommonJs
• webpack 4: Code Splitting, chunk graph and the splitChunks optimization
• webpack 4: released today!! ✨
• release notes & changelog

License

MIT © Carloluis