Lerna
UnclaimedA fast, modern build system for managing and publishing multiple JavaScript/TypeScript packages.
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TL;DR - Lerna
- Manages and publishes multiple JavaScript/TypeScript packages in monorepos.
- Offers fast, efficient task execution with advanced caching and parallelization.
- Simplifies versioning and publishing packages to npm with flexible strategies.
Pricing: Free forever
Best for: Individuals & startups
Pros & Cons
Pros
- Significantly speeds up monorepo build and test times
- Reduces CI times through caching and distributed execution
- Simplifies the complex process of publishing multiple packages
- Provides clear structure and management for large codebases
- Widely adopted and battle-tested in the JavaScript ecosystem
Cons
- Requires understanding of monorepo concepts
- Initial setup might have a learning curve for new users
- Dependency on Nx for modern task runner features
Key Features
Efficient task runner for npm scripts across multiple projectsAdvanced computation caching to avoid rebuilding same codeDistributed cache for sharing between developers and CI/CDTarget dependencies configuration for task execution orderInfinite scaling with distributed execution across multiple machinesPowerful interactive workspace visualizerDynamic CLI for relevant command outputMinimal configuration requirements
Pricing
Free
Lerna is completely free to use with no hidden costs.
About Lerna
By Toolradar Team·
Lerna is a powerful build system designed for JavaScript and TypeScript monorepos. It helps developers manage and publish multiple packages from a single repository efficiently. By leveraging advanced caching, parallel execution, and distributed task running, Lerna significantly speeds up development workflows and CI/CD processes for monorepo projects.
This tool is ideal for teams and developers working with monorepos, enabling them to share code, establish clear ownership, and maintain fast, unified continuous integration. Lerna simplifies the complexities of monorepo management by providing a unified solution for running tasks, linking packages, and publishing them to npm, reducing configuration overhead and improving overall productivity.
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Lerna FAQ
What is Lerna?
Lerna is a fast, modern build system for managing and publishing multiple JavaScript/TypeScript packages from the same repository (monorepo). It optimizes task execution, versioning, and publishing workflows.
How much does Lerna cost?
Lerna is an open-source tool and is completely free to use.
Is Lerna free?
Yes, Lerna is a free and open-source tool.
Who is Lerna for?
Lerna is for developers and teams working with JavaScript/TypeScript monorepos who need an efficient way to manage, build, test, and publish multiple packages from a single repository.
Source: lerna.js.org