facebook/react

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74 of your 142 findings came from Repobility's proprietary detections. ✓ Repobility tags below mark them.

Scan timing: clone 13.3s · analysis 27.67s · 36.1 MB · GitHub API rate-limit (preflight)

https://github.com/facebook/react · scanned 2026-06-05 04:28 UTC (11 hours, 50 minutes ago) · 10 languages

2383 findings (123 legacy + 2260 scanner) 11/13 scanners ran 88th percentile · Javascript · large (100-500K LoC) Scanner says 41 (higher by 50)

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UNIFIED Repobility · multi-layer engine · AI coders

Complete repo analysis

Last scanned 11 hours, 50 minutes ago · v2 · 1253 findings from 2 sources. Findings combine the legacy security pipeline AND the multi-layer engine (atlas, wiring, flows, ranked) AND verified AI agent contributions.

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77.8% cov · 1130 gaps

Score breakdown â 2026-05-18-v5

Component	Sub-score	Weight	Contribution
`structure_score`	60.0	0.15	9.00
`security_score`	100.0	0.25	25.00
`testing_score`	95.0	0.20	19.00
`documentation_score`	99.0	0.15	14.85
`practices_score`	100.0	0.15	15.00
`code_quality`	80.0	0.10	8.00
Overall		1.00	90.8

security_score may be inflated — optional security scanners were skipped on this fast scan

Severity distribution — click a segment to filter

Active filters: excluding tests × Reset all

Severity: Critical 4 High 97 Medium 94 Low 462 9-Layer: Software Security Quality Integrity Frontend Hardware Data Network Cicd Source: Legacy 123 9-layer 1130 Crowd 0 Layer: Quality 382 Security 66 Software 87 Frontend 631 Network 1 Cicd 67 Api 19

Exclude dismissed / FP Exclude test files

Bug-class explainers. Each card groups findings of the same shape — these are the patterns most likely to ship to prod and reappear in future scans unless you systematically fix the cause, not just the instance.

Fragile runtime 101 findings

What it is: Code that runs but breaks under predictable input — division by zero, missing keys, unbounded loops, off-by-one slicing.

Why it matters: Reaches production undetected because happy-path tests pass. First user with a weird input crashes the request.

How AI causes it: AI loves writing the happy path; doesn't probe edge cases unless explicitly asked.

Fix approach: Add property-based tests. Wrap external inputs with explicit validators. Use the framework's typed deserializer (Pydantic, attrs).

12 matching findings on this repo

medium [SEC136] AI-typical over-broad exception handler swallowing all errors: Catch-a… packages/react-dom-bindings/src/client/ReactDOMSe…:38
medium [SEC136] AI-typical over-broad exception handler swallowing all errors: Catch-a… packages/react-devtools-shared/src/symbolicateSou…:89
medium [SEC136] AI-typical over-broad exception handler swallowing all errors: Catch-a… packages/react-devtools-shared/src/storage.js:13
medium [ERR002] Empty Catch Block: Empty catch blocks hide errors. packages/react-devtools-shared/src/devtools/views…:194
medium [ERR002] Empty Catch Block: Empty catch blocks hide errors. packages/react-devtools-shared/src/backend/shared…:176
medium [ERR002] Empty Catch Block: Empty catch blocks hide errors. packages/internal-test-utils/internalAct.js:273
low Duplicated implementation block across source files packages/react-devtools-shared/src/devtools/views…:45
low Duplicated implementation block across source files packages/react-devtools-shared/src/devtools/views…:45
low Duplicated implementation block across source files packages/react-devtools-inline/webpack.config.js:77
low Duplicated implementation block across source files packages/react-devtools-inline/webpack.config.js:13
low Duplicated implementation block across source files packages/react-devtools-inline/webpack.config.js:1
low Duplicated implementation block across source files packages/react-devtools-fusebox/webpack.config.fr…:85

View all fragile runtime findings →

Legacy markers 56 findings

What it is: TODO, FIXME, XXX, HACK comments. Often indicate a known-broken path the author meant to fix.

Why it matters: Each marker is an unfinished thought. Production code shouldn't ship with debt that's documented but not tracked.

How AI causes it: AI mirrors the style of the codebase, so existing TODOs propagate into new code.

Fix approach: Convert each into a ticket. Delete the comment when the ticket lands. Use a pre-commit hook to block new TODOs without an issue link.

12 matching findings on this repo

low Stray `console.log` in TS/JS — fixtures/legacy-jsx-runtimes/lint-runtimes.js:32
info TODO/FIXME marker in shipping code — fixtures/legacy-jsx-runtimes/setupTests.js…
info TODO/FIXME marker in shipping code — fixtures/legacy-jsx-runtimes/react-15/cjs/…
info TODO/FIXME marker in shipping code — fixtures/legacy-jsx-runtimes/react-15/cjs/…
info TODO/FIXME marker in shipping code — fixtures/legacy-jsx-runtimes/react-17/cjs/…
info TODO/FIXME marker in shipping code — fixtures/legacy-jsx-runtimes/react-17/cjs/…
info TODO/FIXME marker in shipping code — fixtures/legacy-jsx-runtimes/react-16/cjs/…
info TODO/FIXME marker in shipping code — fixtures/legacy-jsx-runtimes/react-16/cjs/…
info TODO/FIXME marker in shipping code — fixtures/legacy-jsx-runtimes/react-14/cjs/…
info TODO/FIXME marker in shipping code — fixtures/legacy-jsx-runtimes/react-14/cjs/…
low Stray `console.log` in TS/JS — fixtures/nesting/src/legacy/Greeting.js:12
info TODO/FIXME marker in shipping code — packages/react-native-renderer/src/legacy-…

View all legacy markers findings →

Commented-out code 180 findings

What it is: Lines of source that were intentionally disabled but never deleted.

Why it matters: Git already remembers history — commented code rots, becomes wrong, and adds noise to diffs.

How AI causes it: AI sometimes comments out broken code instead of fixing it. Reviewers approve out of inertia.

Fix approach: Delete. Trust `git log`. If you really need to remember, save it in a notes file under `docs/`.

12 matching findings on this repo

info Commented-code block (5 lines) in compiler/apps/playground/playwright.config.js…
info Commented-code block (6 lines) in compiler/packages/babel-plugin-react-compiler…
info Commented-code block (11 lines) in compiler/packages/babel-plugin-react-compile…
info Commented-code block (7 lines) in compiler/packages/babel-plugin-react-compiler…
info Commented-code block (5 lines) in compiler/packages/babel-plugin-react-compiler…
info Commented-code block (5 lines) in compiler/packages/babel-plugin-react-compiler…
info Commented-code block (9 lines) in compiler/packages/babel-plugin-react-compiler…
info Commented-code block (7 lines) in compiler/packages/babel-plugin-react-compiler…
info Commented-code block (5 lines) in compiler/packages/babel-plugin-react-compiler…
info Commented-code block (5 lines) in compiler/packages/babel-plugin-react-compiler…
info Commented-code block (8 lines) in compiler/packages/babel-plugin-react-compiler…
info Commented-code block (5 lines) in compiler/packages/babel-plugin-react-compiler…

View all commented-out code findings →

Config drift 53 findings

What it is: Settings duplicated across env files, Docker compose, K8s, and code defaults, all with slightly different values.

Why it matters: Production behaviour depends on whichever copy your loader reads first. Subtle bugs in staging that don't reproduce in dev.

How AI causes it: AI writes new config from memory rather than reading the existing source.

Fix approach: Pick one source of truth (env vars + a settings module). Have every other place import from there. Lint for duplicates in CI.

12 matching findings on this repo

low File has no detected symbols: babel.config.js
low File has no detected symbols: babel.config-ts.js
low File has no detected symbols: babel.config-react-compiler.js
low File has no detected symbols: compiler/apps/playground/playwright.config.js
low File has no detected symbols: compiler/apps/playground/tailwind.config.js
low File has no detected symbols: compiler/apps/playground/next.config.js
low File has no detected symbols: compiler/apps/playground/postcss.config.js
low File has no detected symbols: compiler/packages/react-compiler-healthcheck/tsup…
low File has no detected symbols: compiler/packages/react-compiler-healthcheck/src/…
low File has no detected symbols: compiler/packages/react-compiler-runtime/tsup.con…
low File has no detected symbols: compiler/packages/babel-plugin-react-compiler/jes…
low File has no detected symbols: compiler/packages/babel-plugin-react-compiler/tsu…

View all config drift findings →

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