This tool analyzes your legacy JavaScript and outputs modern ESNext equivalents. You'd reach for it when dealing with old codebases full of var declarations, callbacks, and pre-ES6 patterns that need updating to const/let, async/await, and arrow functions. The implementation details aren't visible from the source, but the concept is straightforward: point it at legacy code and get modernized suggestions. It runs as a remote MCP server over SSE, so you can integrate it without local setup. Best suited for teams migrating older projects or developers who want to learn modern JavaScript patterns by seeing before-and-after transformations of working code.
claude mcp add --transport sse io.github.evozim-legacy-migrator https://legacy-migrator-mcp.vercel.app/api/mcp