Micro-Frontends are a modern architectural approach where a single web application is composed of independent, smaller applications (a.k.a. micro-apps), each managed by different teams and deployed independently. With Micro-Frontends in Angular, this concept becomes especially powerful, leveraging Angular’s strong module system and ecosystem.
Webpack 5’s module federation functionality enables remote module loading at runtime.
This allows Micro-Frontends in Angular to be integrated seamlessly into a larger host application. Angular CLI 13+ supports Module Federation natively, simplifying the setup process.
We’ll build:
Shell (Host): The primary application that loads micro frontends.
Remote (Micro App): A feature app like a dashboard or analytics module.
Project Structure
micro-frontends/
│
├── shell/ # Main host app
└── mfe-dashboard/ # Remote micro-frontend app
Related read: Micro Frontends: Unlocking the Future of Web Development
ng new shell --routing --style=scss cd shell ng add @angular-architects/module-federation
Choose:
▪️Host Application
▪️Use default port (4200)
2. Create Remote App (Dashboard)
In the root directory:
ng new mfe-dashboard --routing --style=scss cd mfe-dashboard ng add @angular-architects/module-federation
Choose:
▪️Remote Application
▪️Name it dashboard
▪️Port: 4201
▪️Expose Module: ./Module
▪️Path: src/app/dashboard/dashboard.module.ts
In mfe-dashboard/webpack.config.js:
const { withModuleFederationPlugin } = require('@angular-architects/module-federation/webpack');
module.exports = withModuleFederationPlugin({
name: 'dashboard',
exposes: {
'./Module': './src/app/dashboard/dashboard.module.ts',
},
shared: {
"@angular/core": { singleton: true, strictVersion: true },
"@angular/common": { singleton: true, strictVersion: true },
"@angular/router": { singleton: true, strictVersion: true },
},
});mfe-dashboard/src/app/dashboard/dashboard.module.ts:
import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { DashboardComponent } from './dashboard.component';
import { RouterModule } from '@angular/router';
@NgModule({
declarations: [DashboardComponent],
imports: [
CommonModule,
RouterModule.forChild([{ path: '', component: DashboardComponent }])
],
})
export class DashboardModule {}import { Component } from '@angular/core';
@Component({
selector: 'app-dashboard',
template: `<h2>Micro Frontend Dashboard</h2>`,
})
export class DashboardComponent {}Modify shell/webpack.config.js:
const { withModuleFederationPlugin } = require('@angular-architects/module-federation/webpack');
module.exports = withModuleFederationPlugin({
remotes: {
'dashboard': 'dashboard@http://localhost:4201/remoteEntry.js',
},
shared: {
"@angular/core": { singleton: true, strictVersion: true },
"@angular/common": { singleton: true, strictVersion: true },
"@angular/router": { singleton: true, strictVersion: true },
},
});shell/src/app/app-routing.module.ts:
import { NgModule } from '@angular/core';
import { RouterModule, Routes } from '@angular/router';
const routes: Routes = [
{
path: 'dashboard',
loadChildren: () =>
import('dashboard/Module').then((m) => m.DashboardModule),
},
{ path: '**', redirectTo: 'dashboard' },
];
@NgModule({
imports: [RouterModule.forRoot(routes)],
exports: [RouterModule],
})
export class AppRoutingModule {}Note: dashboard/Module is the remote entry.
Run Dashboard (Remote App)
cd mfe-dashboard
npm start
Serves at: http://localhost:4201cd shell
npm start
Navigate to http://localhost:4200/dashboard — you’ll see the remote component from the dashboard app loadedRelated read: What Are Micro-Frontends And Steps To Implement Micro-Frontends In Angular
Implementing Micro-Frontends in Angular using Module Federation offers a scalable and flexible architecture for large applications. By splitting a monolithic frontend into independently developed and deployed micro-apps, teams can work autonomously, reduce interdependencies, and accelerate delivery cycles.
Angular’s native support for Module Federation through the Angular CLI makes this approach even more accessible. Whether you’re building dashboards, admin panels, or feature-rich modules, embracing Micro-Frontends in Angular can significantly improve maintainability and collaboration across development teams.
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