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Angular Routing

In this lesson you will learn angular routing in Module Federation, why it matters within angular integration, and how to use it correctly with clear, copy-ready examples.

Angular Routing Overview

Angular Routing is a building block you will reach for often in Module Federation. It keeps related logic together and makes your intent obvious to reviewers and future maintainers.

When you learn angular routing properly, you avoid the guesswork that leads to bugs and rework. The example below shows the shape you will use in most real Module Federation projects.

// bootstrap a federated Angular remote
import { loadRemoteModule } from '@angular-architects/module-federation';

const routes = [{
  path: 'catalog',
  loadChildren: () => loadRemoteModule({
    remoteEntry: 'http://localhost:3001/remoteEntry.js',
    remoteName: 'catalog',
    exposedModule: './Module',
  }).then((m) => m.CatalogModule),
}];

@angular-architects/module-federation wires federated remotes into Angular's router.

Angular Routing Example

new ModuleFederationPlugin({
  name: 'app',
  filename: 'remoteEntry.js',
  exposes: { './Widget': './src/Widget' },
  remotes: { other: 'other@http://host/remoteEntry.js' },
  shared: { react: { singleton: true } },
});
  • Start from a minimal Angular Routing example and grow it only as needed.
  • Keep configuration explicit so Angular Routing behaves the same in every environment.
  • Name things clearly so teammates understand your Angular Routing at a glance.
  • Add tests around Angular Routing early to lock in expected behaviour.

Module Federation Cheatsheet

Key Module Federation settings related to angular routing.

Option Example Purpose
name name: 'shell' Unique container name
filename filename: 'remoteEntry.js' Remote entry manifest
exposes exposes: { './X': './src/X' } Modules a remote shares
remotes remotes: { app: 'app@url' } Remotes a host consumes
shared shared: { react: { singleton: true } } Deduplicate libraries
lazy load import('remote/Module') Load remotes on demand
Suspense <Suspense fallback={...}> Handle async loading

How Angular Routing Works in Module Federation

Angular Routing builds on Module Federation's ability to load code from another independently built and deployed application at runtime. Each app can be a host, a remote, or both.

@angular-architects/module-federation wires federated remotes into Angular's router.

  • Remotes expose modules through a remoteEntry.js manifest.
  • Hosts declare remotes and import exposed modules dynamically.
  • Shared dependencies are deduplicated, ideally as singletons.
  • Each micro frontend builds and deploys on its own schedule.

Practical Guidance for Angular Routing

In production, angular routing needs careful version management and graceful failure handling. Align shared dependency versions and always render a fallback when a remote cannot load.

Concern Recommendation
Shared versions Use singletons with requiredVersion
Runtime errors Wrap remotes in error boundaries and fallbacks
Deployment Resolve remotes from a runtime manifest
Performance Lazy-load remotes and cache remoteEntry.js

Common Mistakes

  • Copying angular routing snippets without understanding what each line does.
  • Skipping error handling and edge cases when wiring up angular routing.
  • Leaving angular routing untested, so regressions slip into production.
  • Over-engineering angular routing before you actually need the extra flexibility.

Key Takeaways

  • Angular Routing is a core part of working effectively with Module Federation.
  • Start small and keep angular routing focused on a single responsibility.
  • Apply consistent patterns so angular routing scales across your project.
  • Test and document angular routing to keep it maintainable over time.

Pro Tip

Pair angular routing with automated tests from day one. It is far cheaper to catch Module Federation regressions in CI than in production.