Fix your React code

A review bot that catches bad React code before it hits production

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Pull requests

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-40

react review

bot

reviewed 1 minute ago

I detected 3 errors and 5 warnings in your PR. Fix with:

react review

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void addTag;
void setTags;

⚠️ useEffect subscribes via but never returns a cleanup

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Features

React Review posts inline comments when a new diagnostic lands on a changed line, then leaves a PR report with a 0-100 health score, score delta, framework, React version, TypeScript status, and issue summary.

Get a React score

+22

-40

⚠️

useEffect error

Catch regressions

Accessibility

State & Effects

Bundle Size

Global audit

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React Review requests read-only access to repository contents and pull request metadata.

void addTag;
void setTags;

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const hasCompilerPackage = (packageJson: PackageJson): boolean => {
const allDependencies = {
...packageJson.peerDependencies,
...packageJson.dependencies,
...packageJson.devDependencies,
};
return Object.keys(allDependencies).some((packageName) =>
REACT_COMPILER_PACKAGES.has(packageName),
);
};

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Who are we?

We're Million, the team behind React Doctor, React Scan, and Million.js. Backed by Y Combinator (W24). Based in San Francisco.