Dependency Conflicts

Dependency Conflicts Overview

Dependency Conflicts lets you structure single-spa work so it stays readable, testable, and easy to scale. Instead of ad-hoc code, you follow a clear pattern that other developers can recognise immediately.

The key is to keep dependency conflicts focused and predictable. Start from the minimal example here, then layer in only the complexity your feature actually needs.

import { registerApplication, start } from 'single-spa';

registerApplication({
  name: '@org/app',
  app: () => System.import('@org/app'),
  activeWhen: ['/app'],
});

start();

single-spa orchestrates multiple framework apps on one page through a root config.

Dependency Conflicts Example

registerApplication({
  name: '@org/app',
  app: () => System.import('@org/app'),
  activeWhen: ['/app'],
});
start();

• Start from a minimal Dependency Conflicts example and grow it only as needed.
• Keep configuration explicit so Dependency Conflicts behaves the same in every environment.
• Name things clearly so teammates understand your Dependency Conflicts at a glance.
• Add tests around Dependency Conflicts early to lock in expected behaviour.

Single-SPA Cheatsheet

Core single-spa APIs related to dependency conflicts.

How Dependency Conflicts Works in Single-SPA

Dependency Conflicts is part of how single-spa lets multiple applications — even in different frameworks — coexist on one page. A root config registers each app and controls when it is active.

single-spa orchestrates multiple framework apps on one page through a root config.

• A root config registers apps and calls start().
• Each app exports bootstrap, mount, and unmount lifecycles.
• activeWhen decides which routes each app owns.
• Import maps resolve each app's bundle at runtime.

Practical Guidance for Dependency Conflicts

For reliable micro frontends, dependency conflicts should isolate failures and keep shared state minimal. Let each team own its app end to end while agreeing on a few shared contracts.

Common Mistakes

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

Key Takeaways

• Dependency Conflicts is a core part of working effectively with single-spa.
• Start small and keep dependency conflicts focused on a single responsibility.
• Apply consistent patterns so dependency conflicts scales across your project.
• Test and document dependency conflicts to keep it maintainable over time.