Microfrontend vs Monofrontend vs Submodules: A Practical Guide with npm and pnpm

 

Microfrontend vs Monofrontend vs Submodules:

A Practical Guide with npm and pnpm

By Jyothsna Dannana

Introduction

As frontend applications grow, managing a single codebase becomes increasingly difficult. Build times become longer, deployments feel risky, and teams start depending on each other for even small changes. Choosing the right frontend architecture is critical for building scalable, maintainable, and high-performance applications.

In this blog, we will explore three important frontend architecture approaches:

• Monofrontend

• Microfrontend

• Submodules (Shared Libraries)

• npm vs pnpm setup

We will also understand how npm and pnpm help manage these architectures effectively.

What Is Monofrontend Architecture?

A Monofrontend is a traditional frontend architecture where the entire application is built as a single unit. All features, pages, components, and business logic live in one repository and are deployed together.

In this approach, the frontend behaves as one large application, even if it contains multiple modules internally.

Key Characteristics of a Monofrontend

• Single codebase

• One package manager configuration

• Shared dependencies across the app

• One build and deployment pipeline

• Tight coupling between features
  
  Here is the example how it looks in codebase:

Advantages of Monofrontend

• Easy to start and understand

• Simple project setup

• Centralized code management

• Easier debugging in early stages

Limitations of Monofrontend

• Application becomes large over time

• Slower build and deployment cycles

• Difficult to scale with multiple teams

• One small change requires full redeployment

How it works

• Single package.json

• All dependencies installed together

• One build command

• One deployment

When Should You Use Monofrontend?

Monofrontend is best suited when:

• The team size is small

• The application is simple or medium-sized

• You are building an MVP or early-stage product

• Independent deployments are not required

What Is Microfrontend Architecture?

Microfrontend architecture breaks a frontend application into multiple smaller, independent applications. Each microfrontend is responsible for a specific feature or domain and can be developed, built, and deployed independently.

These independent applications are composed together to form a complete user experience.

How Microfrontends Work

In a microfrontend setup:

• Each feature has its own codebase

• Teams work independently

• Applications are integrated at runtime or build time

• Different frameworks can coexist if needed
  
  Here is the example of how it looks like in codebase:
  
  
  

  
  
  

Microfrontends communicate using shared state, events, or APIs while maintaining clear boundaries.

Advantages of Microfrontend Architecture

• Scales well for large teams

• Independent development and deployment

• Faster feature delivery

• Clear ownership of features

• Better long-term maintainability

Challenges of Microfrontend Architecture

• Higher initial setup complexity

• Requires strong architectural discipline

• Shared state management can be tricky

• Performance overhead if not optimized properly

Common Tools

• Webpack Module Federation

• Single-SPA

• Vite Federation

• Nx / Turborepo

When Should You Use Microfrontends?

Microfrontend architecture is ideal when:

• Multiple teams work on the same product

• Independent deployments are needed

• The application is large and complex

• Long-term scalability is a priority
  

What Are Submodules (Shared Libraries)?

Submodules, often referred to as shared libraries, are reusable packages that contain common code shared across multiple frontend applications.

These libraries usually include:

• UI components

• Utility functions

• Authentication logic

• Common services

Submodules help maintain consistency and reduce duplication.

How They Are Used

• Imported like normal npm packages

• Versioned

• Shared across multiple apps

Benefits of Using Submodules

• Code reuse across applications

• Consistent UI and behavior

• Easier maintenance of shared logic

• Reduced duplication

Challenges with Submodules

• Version management becomes important

• Breaking changes can affect multiple applications

• Requires proper release strategy
  
  

Managing Frontend Architectures Using npm

• npm provides workspace support that allows multiple applications and packages to live in a single repository.

  Using npm workspaces:

  • Dependencies can be shared

  • Projects can be managed together

  • Builds remain centralized

  However, npm may lead to:

• Slower installations

• Higher disk usage

• Less strict dependency isolation

Managing Frontend Architectures Using pnpm

pnpm is a modern package manager designed for performance and scalability. It is especially well-suited for monorepos and microfrontend architectures.

Key benefits of pnpm:

• Faster installation times

• Efficient disk usage

• Strict dependency isolation

• Excellent workspace support

pnpm enforces better project structure, which helps avoid hidden dependency issues.

pnpm Workspace Structure

 pnpn-workspace.yaml

Commands

npm vs pnpm: A Comparative Overview

Feature	npm	pnpm
Installation Speed	Moderate	Fast
Disk Usage	High	Low
Workspace Support	Basic	Advanced
Dependency Isolation	Weak	Strong
Microfrontend Support	Limited	Excellent

When to Use What?

Use Monofrontend When:

• Team size is small

• App is simple

• Fast delivery is required

Use Microfrontend When:

• Multiple teams

• Independent deployments

• Enterprise-scale apps

Use Submodules When:

• Shared UI or logic is needed

• Multiple apps reuse code

Choosing the Right Frontend Architecture

There is no one-size-fits-all solution. The right choice depends on your team size, project complexity, and long-term goals.

• Choose Monofrontend for simplicity and speed

• Choose Microfrontend for scalability and independence

• Use Submodules for shared logic and consistency

• Prefer pnpm for modern, scalable frontend development

Conclusion

Frontend architecture plays a vital role in the success of modern web applications. Understanding the differences between monofrontend, microfrontend, and submodules helps teams make informed decisions.

By combining the right architecture with efficient tools like pnpm, teams can build frontend applications that are scalable, maintainable, and future-ready.

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About the Author

Jyothsna Dannana

Frontend Developer passionate about building scalable, high-performance, and modern web applications. Interested in frontend architecture, microfrontends, and developer tooling like npm and pnpm.