facebook/react

Sample Report

A declarative, efficient, and flexible JavaScript library for building user interfaces.

227k stars46.4k forks1600+ contributors

Health Score

Overall code quality assessment

Grade A

Structure91%

Quality84%

Architecture86%

critical

high

medium

low

info

Top Issues

Most critical findings requiring attention

Potential ReDoS vulnerability in regex pattern

packages/react-dom/src/shared/sanitizeURL.js

Security

Unhandled promise rejection in async handler

packages/react-reconciler/src/ReactFiberWorkLoop.js

Error Handling

Cyclomatic complexity of 42 exceeds threshold (15)

packages/react-dom/src/client/ReactDOMComponent.js

Complexity

Function has 12 parameters (max: 5)

packages/react-reconciler/src/ReactChildFiber.js

Code Style

Duplicate code block detected (85% similarity)

packages/react-dom/src/events/...

Duplication

File Hotspots

Files with the most issues

ReactDOMComponent.js

packages/react-dom/src/client/

18 issues

ReactFiberWorkLoop.js

packages/react-reconciler/src/

15 issues

ReactChildFiber.js

packages/react-reconciler/src/

12 issues

DOMPropertyOperations.js

packages/react-dom/src/client/

9 issues

ReactFiberCommitWork.js

packages/react-reconciler/src/

8 issues

Detector Breakdown

Issues by category

Complexity34

Code Style28

Duplication25

Security12

Error Handling18

Dead Code15

Type Safety10

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