craco-module-federation

Note

THIS IS NOT PRODUCTION READY Webpack 5 support of CRA is still in its alpha phase and there might be breaking changes in either CRA5 or this plugin in the future.

Add module-federation support to your CRA5 project without ejecting and losing update support of react-scripts

Install

npm install craco-module-federation --save-dev

Usage

Add the plugin into your craco.config.js;

cracoModuleFederation = require('craco-module-federation');

module.exports = {
    plugins: [{
        plugin: cracoModuleFederation,
        options: { useNamedChunkIds:true } //THIS LINE IS OPTIONAL
      },
    ]
}

create a file named modulefederation.config.js in the project root. You should export ModuleFederationPlugin constructor options as json from this module. For example;

const deps = require("./package.json").dependencies;

console.log(process.env.ROOT_PATH_MODE);
module.exports = {
  name: "app1",
  exposes: {
    "./Button": "./src/Button",
  },
  remotes: {
    app2: "app2@http://localhost:3002/remoteEntry.js",
  },
  filename: "remoteEntry.js",
  shared: {
    ...deps,
    react: {
      singleton: true,
      requiredVersion: deps["react"],
    },
    "react-dom": {
      singleton: true,
      requiredVersion: deps["react-dom"],
    },
  },
};

Update the scripts section of your package.json as follows:

  ...
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "craco:build": "craco build",
    "craco:start": "craco start",
    ...

Testing the plugin locally

There are two test apps in this repository inside test folder (app1 and app2). Install their dependencies on them using yarn (yarn install) and hit yarn start on both of them. When you navigate to app1 it should render the exported button from app2 that says hello from app2