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micro-frontend example

This repository serves to demonstrate an example of micro-frontend implementation. It consists of the following apps in the respective directories:

  • restaurant (container app)
  • pizza-app (micro-frontend app)

The example is of a restaurant menu, where the pizza and sandwich are two sections. The pizza section is served as a micro-frontend while the sandwich section is not.

Getting Started

For the impatient: docker-compose

You can use docker-compose to start the setup quickly. Run the following command:

$ docker-compose up

Starting the container app: restaurant

Navigate to the restaurant directory and run the following:

$ npm install
$ npm start

The app will be available at http://localhost:8080.

Starting the micro-frontend: pizza-app

You can similarly navigate to the pizza-app directory and run the following commands to start the micro-frontend. It will serve up the micro-frontend JavaScript bundle at http://localhost:8081/app.bundle.js.

$ npm install
$ npm start

Rendering outside the micro-frontend frame

In this example, you can see how the pizza-app micro-frontend needs to control breadcrumbs that lie outside the micro-frontend frame:

micro-frontend-breadcrumbs

It does this by using React Portal APIs. When rendering the micro-frontend, the container app relinquishes control of the breadcrumbs to the micro-frontend. It passes the div ID of the breadcrumbs section to the micro-frontend, and the micro-frontend in turn uses React Portal APIs to render it's own breadcrumbs within that section.