JSCodeCraft

JSCodeCraft brings 10 JavaScript tools into one platform. Code analyzer with 20+ rules catches bugs, security issues, and anti-patterns before they hit production. Performance estimator scores complexity and suggests fixes. Interactive visualizer makes event loops, closures, and async code click. AST explorer shows code structure visually. Refactoring engine with 5 modes. Bug hunting game. Interview prep from Junior to Staff Engineer. Built for developers who learn by doing. No sign-up required.