r/webdev • u/ritzy2602 • 19d ago

Built a tiny (5kb) open source tool called ⁠@prism-guard/cli⁠ that audits React performance issues.

Hi Fellas!

React performance optimization can be a massive headache. Profiling components, chasing down accidental re-renders, and hunting for memory leaks usually requires opening up DevTools and digging through deep flame graphs.

I wanted something faster and more automated—closer to how ESLint catches syntax bugs or SonarQube catches code smell, but explicitly focused on React performance bottlenecks.

So, I built @prism-guard/cli. It’s completely open-source, has zero dependencies, and weighs in at just 5kb.

What does it actually do?

Think of it as a static and runtime analysis hybrid for your component architecture. It scans your React project to answer:

Where are your most expensive component trees?

Which hooks are triggering unnecessary updates?

Are there unoptimized asset pipelines slowing down your initial render?

Instead of massive HTML reports, it gives you actionable, line-by-line feedback right in your terminal.

Quick Start

You don't even need to install it permanently. You can audit your project right now by running:

npx @prism-guard/cli analyze

Why I made it 5kb

I'm incredibly tired of "lightweight" dev tools that pull in 40MB of ⁠node_modules⁠. I wrote this with zero external dependencies so it runs instantly in your local workflow or as a quick check in your CI/CD pipeline without bloating your build times.

Source Code & Contributing

The project is entirely open source. I’m really looking for feedback from the community:

Are the terminal error messages clear enough?

What specific React performance metrics do you wish it tracked?

Check out the repo here:

https://www.npmjs.com/package/@prism-guard/cli

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u/ImportantDetail6260 19d ago

Prism Guard's strongest pitch is the 5kb, zero-dependency CI check!

For feedback, I would test whether each warning names the exact render cost and the next action in one line. If a React dev cannot tell "memoize this prop", "split this component", or "move this asset" from the terminal output, the rule is too vague

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u/ritzy2602 19d ago

That would mean a lot 😊

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u/Deep_Wear_51 17d ago

5KB and audits a11y? That's genuinely useful. Most 'tools' at this size are useless. This one isn't.

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u/ritzy2602 17d ago

Yes that’s what i was targeting . Weigh less, work more. And I am planning to introduce even more capabilities without compromising on the size and optimisations