Sample Code - Micro Frontends in Action

This is the example code that goes along with the Manning book Micro Frontends in Action.

Hosted examples

You can interact with the running examples here:
https://the-tractor.store 🚜

Local machine

Prerequisites

1. Clone this git repository or download & extract the zip to your local machine.

2. Make sure you have Node.js (v18 or newer) installed.

   $ node -v
   v18.x.x
   

3. Go into the main directory and install all required dependencies.

   cd micro-frontends-in-action-code
   npm install
   

4. Install Nginx on your machine. The nginx executable only has to be present - no configuration required.

   • macOS (via Homebrew): brew install nginx
   • Debian/Ubuntu: sudo apt-get install nginx
   • Windows: Binaries included in this repository. No installation required.

   Five examples require Nginx:

   • 04_routing
   • 05_ssi
   • 06_timeouts_down
   • 16_universal
   • 18_asset_registration_include

Running the code

All examples involve starting up multiple applications which are owned by different teams. There is an NPM run for each directory. You can start examples like this: npm run [name_of_example].

The following command will start example #5:

npm run 05_ssi

The script starts all applications and shows a combined log output.
NOTE: Nginx stdout do not work on Windows.

It waits until the servers are ready and opens the example page in your default browser.

You can stop the example by hitting [CMD] + C in your terminal.

NOTE: The code should run on all platforms. However, if you're having troubles feel free to create an issue.

Folder structure and ports

Each example has its own folder (e.g. 05_ssi). Each example folder contains a subfolder that contains the actual application (e.g. nginx, decide, inspire).

Different port numbers are used to indicate ownership. This following table shows which teams owns which application. Make sure ports 3000 to 3003 are not allocated by another process on your machine.

Port	Team	Responsibility
3000	- shared -	infrastructure (web-server, app shell)
3001	Team Decide	product page
3002	Team Inspire	homepage, search, recommendations
3003	Team Checkout	cart, checkout process

List of all examples

Here is a list of all run commands with a reference to the chapter they belong to.

run script	name	chapter
npm run 01_pages_links	Pages & Links	2
npm run 02_iframe	iFrames	2
npm run 03_ajax	Namespaces	3
npm run 04_routing	Server-side Routing	3
npm run 05_ssi	Server-side Integration	4
npm run 06_timeouts_down npm run 06_timeouts_short_delay npm run 06_timeouts_long_delay	Timeouts & Fallbacks	4
npm run 07_podium	Podium	4
npm run 08_web_components	Client-side Composition	5
npm run 09_shadow_dom	Style Isolation & ShadowDOM	5
npm run 10_parent_child_communication	Parent-Child Communication	6
npm run 11_child_parent_communication	Child-Parent Communication	6
npm run 12_fragment_fragment_communication	Fragment-Fragment Communication	6
npm run 13_client_side_flat_routing	Client-side Routing (Flat)	7
npm run 14_client_side_two_level_routing	Client-side Routing (Two-Tiered)	7
npm run 15_single_spa	Single SPA	7
npm run 16_universal	Universal Rendering	8
npm run 17_asset_client_redirect	Asset Client-side Redirect	10
npm run 18_asset_registration_include	Asset Registration Include	10
npm run 19_shared_vendor_webpack_dll	Shared Vendor Libraries via Webpack DLLPlugin	11
npm run 20_shared_vendor_rollup_absolute_imports	Shared Vendor Libraries via Rollup.js and Absolute ES Module Imports	11
npm run 21_local_development	Local Development	14