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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.
I built JSCodeCraft because I was tired of switching between 10 different tabs to review, analyze, and understand JavaScript code.
Every developer tools site does one thing well. I wanted one place that does everything — analysis, visualization, refactoring, and learning.
The static analyzer catches real issues. The visualizer makes async code finally click. The refactoring engine shows you better patterns. And the interview prep actually prepares you for real conversations.
It started as a side project and turned into something I use daily. I'd love to hear what you think — what tools would you add next?
love that the clickable event loop visualizer actually makes async flow click instead of just looking pretty. most JS tools stop at linter output, so the interactive angle feels genuinely useful for someone trying to finally internalize closures and the microtask queue.
@JSCodeCraft If anyone's wondering how I built this it started as a personal project to help me review my own code faster. I kept finding the same issues in code review that a tool could catch automatically.
The refactoring engine alone has saved me hours each week. It spots patterns like nested callbacks, unused variables, and complex functions that need breaking down.
Happy to answer any technical questions about the implementation. Built it with Next.js 16 and TypeScript the whole thing is open source if you want to see how it works under the hood.
One thing that would make this even better is a side-by-side diff view when using the refactoring engine, so you can see exactly what changes the tool is about to apply before it touches your code. Would save a lot of back-and-forth when working on bigger files.
JSCodeCraft was submitted on Product Hunt and earned 0 upvotes and 6 comments, placing #124 on the daily leaderboard. 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.
JSCodeCraft was featured in Open Source (68.6k followers), Developer Tools (515.9k followers), Artificial Intelligence (473.8k followers), GitHub (41.3k followers) and Vercel Day (26 followers) on Product Hunt. Together, these topics include over 223.4k products, making this a competitive space to launch in.
Who hunted JSCodeCraft?
JSCodeCraft was hunted by Raja Abbas Affandi. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Raja Abbas Affandi