Codemod
AI-powered platform for large-scale automated code migrations with 1,000+ ready-made codemods for popular framework upgrades.
Codemod is a platform for building and running large-scale code transformations across entire codebases. It provides a registry of 1,000+ community-built codemods for common framework upgrades - React 18, Next.js 14, TypeScript migrations, ESLint rule changes, and API deprecations - so teams can run major changes without writing AST transformations from scratch. Codemod Studio is the web-based visual editor for building and testing custom codemods. Migrations run locally via the Codemod CLI or in CI, producing pull requests for human review before changes land. The platform supports JavaScript, TypeScript, Python, and Java, and is used by platform engineering teams and open-source maintainers to ship breaking changes at scale.
Key Features
- Codemod Registry - 1,000+ ready-to-run codemods for React, Next.js, TypeScript, and more
- AI-assisted codemod generation for automatically writing AST transformations from a description
- Codemod Studio - visual web editor for building and testing custom codemods interactively
- GitHub integration for running migrations as reviewable pull requests
- Multi-language support including JavaScript, TypeScript, Python, and Java
- Codemod CLI for running transformations locally or in CI pipelines
Use Cases
- Engineering teams upgrading React, Next.js, or other frameworks across large codebases
- Platform teams enforcing API deprecation changes across hundreds of internal repositories
- Open-source maintainers providing automated migration paths for breaking version releases
- Enterprises modernizing legacy codebases to current framework versions at scale
Pros
- Registry of 1,000+ pre-built codemods covers the most common framework upgrade scenarios
- AST-based transformations are significantly safer than regex find-and-replace for code changes
- GitHub PR integration gives teams full visibility to review changes before they merge
Cons
- Building custom codemods requires understanding AST concepts and the Codemod API
- Accuracy drops for unusual code patterns or heavily customized framework configurations
- Enterprise plan pricing is not publicly listed and requires contacting sales
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