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webpack - How to bundle an Angular app for production

What is the best method to bundle Angular (version 2, 4, 6, ...) for production on a live web server.

Please include the Angular version within answers so we can track better when it moves to later releases.

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2 to 11 (TypeScript) with Angular CLI

OneTime Setup

  • npm install -g @angular/cli
  • ng new projectFolder creates a new application

Bundling Step

  • ng build --prod (run in command line when directory is projectFolder)

    flag prod bundle for production (see the Angular documentation for the list of option included with the production flag).

  • Compress using Brotli compression the resources using the following command

    for i in dist/*/*; do brotli $i; done

bundles are generated by default to projectFolder/dist(/$projectFolder for v6+)**

Output

Sizes with Angular 11.2.12 with CLI 11.2.12and option CSS without Angular routing

  • dist/main-[es-version].[hash].js Your application bundled [ ES5 size: 135 KB for new Angular CLI application empty, 38 KB compressed].
  • dist/polyfill-[es-version].[hash].bundle.js the polyfill dependencies (@angular, RxJS...) bundled [ ES5 size: 36 KB for new Angular CLI application empty, 12 KB compressed].
  • dist/index.html entry point of your application.
  • dist/runtime-[es-version].[hash].bundle.js webpack loader
  • dist/style.[hash].bundle.css the style definitions
  • dist/assets resources copied from the Angular CLI assets configuration

Deployment

You can get a preview of your application using the ng serve --prod command that starts a local HTTP server such that the application with production files is accessible using http://localhost:4200. This is not safe to use for production usage.

For a production usage, you have to deploy all the files from the dist folder in the HTTP server of your choice.


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