Why look beyond Lerna

Lerna has historically been a foundational tool for JavaScript and TypeScript monorepos, offering essential functionalities like package linking, publishing, and command execution across multiple projects within a single repository. Its acquisition by Nx (Nrwl) in 2022 led to renewed development and integration with Nx's ecosystem. However, even with this revitalization, developers may seek alternatives for several reasons. Some alternatives offer more advanced features in areas such as remote caching, distributed task execution, and build optimization, which can be critical for very large monorepos or teams requiring high-performance CI/CD pipelines. Others provide a more opinionated framework for monorepo management, integrating with specific development stacks or offering a tighter developer experience. Project maintainers might also evaluate alternatives based on their community support, documentation quality, or alignment with specific architectural preferences, such as a preference for a build system that's a direct part of the package manager.

While Lerna remains a viable choice, particularly for existing projects or those with simpler monorepo needs, the landscape of monorepo tooling has evolved. Newer tools have emerged to address modern challenges in scaling development, reducing build times, and enhancing collaboration across large codebases. Evaluating these alternatives can help teams select a solution that best fits their current and future development requirements.

Top alternatives ranked

  1. 1. Nx — Integrated monorepo development experience

    Nx is an open-source build system that extends beyond basic monorepo management to provide an integrated developer experience for large-scale applications. Developed by Nrwl, the same company that now maintains Lerna, Nx offers advanced features like computation caching, affected commands, and distributed task execution. It includes generators for scaffolding new projects and libraries, executors for running tasks, and a dependency graph visualization tool. Nx aims to optimize development workflows by understanding the relationships between projects in a monorepo, only rebuilding or testing what is necessary. It supports a wide range of frameworks and technologies, including React, Angular, Node.js, and more, through a plugin-based architecture. For teams managing complex monorepos with diverse technologies, Nx provides a comprehensive solution for scaling development and improving build performance.

    • Best for: Large monorepos, multi-framework projects, performance optimization, and distributed build systems.

    Learn more on the Nx profile page or visit the official Nx website.

  2. 2. Turborepo — High-performance build system for JavaScript and TypeScript monorepos

    Turborepo, acquired by Vercel in 2021, is a high-performance build system designed for JavaScript and TypeScript monorepos. It focuses on optimizing build times through features like incremental builds, remote caching, and parallel execution of tasks. Turborepo achieves speed by intelligently caching the outputs of tasks and only re-running operations when inputs have changed. It integrates with existing package managers like npm, Yarn, and pnpm, allowing developers to continue using their preferred dependency management tools. Turborepo's configuration is minimal, often requiring only a turbo.json file to define tasks and their dependencies. Its primary goal is to make monorepos faster and more efficient, reducing developer wait times and improving CI/CD pipeline performance. It is particularly well-suited for projects where build speed is a critical concern.

    • Best for: Maximizing build performance, reducing CI/CD times, and large JavaScript/TypeScript monorepos focused on speed.

    Learn more on the Turborepo profile page or visit the official Turborepo website.

  3. 3. Yarn Workspaces — Built-in monorepo management for Yarn users

    Yarn Workspaces is a feature built directly into the Yarn package manager, designed to simplify monorepo management without requiring an additional dedicated tool. It allows developers to manage multiple packages within a single repository, sharing dependencies and streamlining the linking process. With Workspaces, Yarn can install all dependencies for all packages in the monorepo at once, hoisting common dependencies to the root node_modules directory to save space and reduce installation times. It also facilitates local package linking, allowing packages to refer to each other by name, as if they were published to a registry. Yarn Workspaces is a lightweight solution that is suitable for projects already using Yarn and looking for basic, integrated monorepo capabilities without the overhead of a separate build system.

    • Best for: Projects already using Yarn, simple monorepo setups, and developers seeking a lightweight, integrated solution.

    Learn more on the Yarn Workspaces profile page or visit the official Yarn Workspaces documentation.

  4. 4. npm Workspaces — Native monorepo support for npm users

    npm Workspaces is a feature introduced in npm v7, providing native support for managing multiple packages within a single repository, similar to Yarn Workspaces. It allows developers to define a set of local packages (workspaces) within a root project, enabling npm to understand the relationships between them. npm Workspaces facilitates shared dependencies, local linking, and running commands across all packages. It aims to offer a straightforward way to manage monorepos for users already familiar with npm, without needing to adopt a different package manager or an external monorepo tool. For projects that prefer npm for dependency management, Workspaces offers a low-friction entry point into monorepo structures, providing essential functionalities for package management and task execution within the monorepo context.

    • Best for: Projects using npm, developers seeking native monorepo support without external tools, and straightforward monorepo setups.

    Learn more on the npm Workspaces profile page or visit the official npm Workspaces documentation.

  5. 5. pnpm Workspaces — Efficient monorepo management with pnpm

    pnpm Workspaces is the monorepo feature of the pnpm package manager, known for its efficient disk space usage and faster installation times. pnpm achieves this by using a content-addressable store for dependencies, creating hard links to packages rather than duplicating them. Workspaces allow pnpm to manage multiple projects within a single repository, each with its own package.json, while sharing a common dependency store. This approach significantly reduces disk space consumption and accelerates installations within a monorepo. pnpm Workspaces integrates seamlessly with pnpm's unique dependency management model, providing a robust solution for monorepos where disk efficiency and speed are priorities. It supports running scripts across workspaces and manages local package linking effectively.

    • Best for: Large monorepos concerned with disk space, faster installations, and projects already using or considering pnpm.

    Learn more on the pnpm Workspaces profile page or visit the official pnpm Workspaces documentation.

  6. 6. Rush — Scalable monorepo management for large organizations

    Rush is a scalable monorepo manager for JavaScript and TypeScript developed by Microsoft. It is designed to handle very large monorepos with hundreds or thousands of projects, commonly found in enterprise environments. Rush provides features like incremental builds, shared tool versions, and robust change detection to ensure consistent and efficient development across a large organization. It integrates with various package managers (npm, Yarn, pnpm) and offers a comprehensive set of commands for building, testing, and publishing packages. Rush's design emphasizes predictability and control, making it suitable for teams that require strict governance and performance for their monorepo. Its focus on enterprise-grade features distinguishes it from simpler monorepo tools.

    • Best for: Enterprise-level monorepos, very large codebases, and organizations prioritizing strict governance and performance.

    Learn more on the Rush profile page or visit the official Rush website.

  7. 7. Bazel — Multi-language build and test tool for large projects

    Bazel is an open-source build and test tool developed by Google that supports multiple languages and platforms, including JavaScript and TypeScript. While not exclusively a monorepo manager, Bazel's features make it highly suitable for large, multi-language monorepos where hermetic and reproducible builds are critical. It uses a declarative build language (Starlark) to define build rules and dependencies, enabling fine-grained caching, remote caching, and distributed builds. Bazel's ability to analyze the exact dependencies of each build target ensures that only necessary parts are rebuilt, leading to significant performance gains in large repositories. Although it has a steeper learning curve than JavaScript-specific tools, Bazel offers unparalleled control and scalability for complex build environments.

    • Best for: Polyglot monorepos, highly complex build environments, and organizations requiring hermetic and reproducible builds.

    Learn more on the Bazel profile page or visit the official Bazel website.

Side-by-side

Feature Lerna Nx Turborepo Yarn Workspaces npm Workspaces pnpm Workspaces Rush Bazel
Core Functionality Package linking, publishing, command execution Build system, task runner, code generators High-performance build system Package management, local linking Package management, local linking Package management, local linking Monorepo orchestrator, build system Multi-language build and test system
Primary Focus JavaScript/TypeScript monorepos Integrated monorepo DX, performance Build speed & caching Simple monorepo for Yarn users Native monorepo for npm users Efficient monorepo for pnpm users Enterprise-scale monorepo management Reproducible builds, polyglot
Caching/Performance Basic caching Computation caching, affected commands Remote caching, incremental builds Dependency hoisting Dependency hoisting Content-addressable store Incremental builds, shared resources Hermetic caching, distributed builds
Developer Experience CLI for common tasks Rich CLI, generators, graph visualization Minimal config, fast feedback loops Integrated with Yarn CLI Integrated with npm CLI Integrated with pnpm CLI Strict governance, consistent tooling Declarative builds, steep learning curve
Supported Package Managers npm, Yarn, pnpm npm, Yarn, pnpm npm, Yarn, pnpm Yarn npm pnpm npm, Yarn, pnpm N/A (manages its own dependencies)
Setup Complexity Moderate Moderate to High Low to Moderate Low Low Low Moderate to High High
Strengths Simplicity for core tasks Comprehensive, scalable, feature-rich Unmatched build speed, easy config Lightweight, integrates with Yarn Native, no external tools needed Disk efficiency, speed Enterprise-grade, robust, opinionated Polyglot, hermetic, highly scalable

How to pick

Selecting the right monorepo tool depends on your project's specific needs, team size, and existing infrastructure. Consider the following factors when making your decision:

For new, small-to-medium JavaScript/TypeScript monorepos:

  • If your team is already committed to Yarn as your package manager, Yarn Workspaces provide a seamless, integrated solution for basic monorepo management without adding another tool. It's lightweight and easy to set up.
  • Similarly, if npm is your package manager of choice, npm Workspaces offer native monorepo capabilities. This is ideal for teams that prioritize simplicity and want to leverage their existing npm knowledge.
  • If disk space efficiency and faster installations are a priority, even for smaller projects, pnpm Workspaces can be a strong contender due to pnpm's unique content-addressable storage model.

For growing or medium-to-large JavaScript/TypeScript monorepos:

  • If build performance and fast feedback loops are critical, especially in CI/CD, Turborepo excels with its advanced caching and parallel execution. Its minimal configuration makes it relatively easy to adopt.
  • If you need a comprehensive solution that offers not just monorepo management but also code generation, affected commands, and an integrated development experience across multiple frameworks, Nx is a powerful choice. It provides a structured approach that scales well with project complexity.

For enterprise-level or polyglot monorepos:

  • For very large organizations with hundreds or thousands of projects and a need for strict governance and consistent tooling, Rush provides the enterprise-grade features and control necessary to manage such complex environments effectively.
  • If your monorepo contains projects in multiple languages beyond just JavaScript/TypeScript, and you require hermetic, reproducible, and highly scalable builds, Bazel offers the most robust solution. Be prepared for a steeper learning curve, but it delivers unparalleled build control.

Before making a final decision, consider prototyping with a few of your top candidates. Evaluate their documentation, community support, and how well they integrate with your existing toolchain and development practices. The ideal choice will balance performance, developer experience, and scalability for your specific organizational context.