Chapter 05

Prerequisites

The following software is required to run the sample:

• Git
• Node.js
• NPM

Running

Clone the repository:

git clone https://github.com/ArtOfMicrofrontends/05-server-discover.git

Go to the repository's directory and run NPM install:

npm install

Now start the application:

npm start

Steps

Follow these steps to implement the same from scratch.

1. Initialize the repository:

npm init -y

2. Make it a Lerna monorepo:

npx lerna init

3. Add an application gateway and two microfrontends:

npx lerna create @aom/app --yes
npx lerna create @aom/mife-1 --yes
npx lerna create @aom/mife-2 --yes

4. Register the dependencies:

npx lerna add express pug

5. Add http-proxy to the gateway:

npx lerna add http-proxy --scope @aom/app

6. Add Express to each app (PORT should be actually different per app):

"use strict";
const express = require("express");
const app = express();
const port = process.env.PORT || 1234;

app.listen(port, () => {
  console.log(`Running at ${port}.`);
});

7. Add an index route for the app:

app.get("/", (_, res) => {
  res.send("index page.");
});

8. Integrate the view engine per app.

app.set('view engine', 'pug')

9. Add views such as views/index.pug:

html
  head
    title= title
  body
    h1= message
    p In microfrontend 1.

10. Call the views from the microfrontends. Here, we can keep the path relative:

res.render('index', { title: "Sample", message: "MF1" });

11. To add assets we need to configure static file hosting:

app.use("/mf2", express.static(path.join(__dirname, "..", "public")));

12. Run the application:

npx lerna run serve --stream