God File Check — Are Your Source Files Overgrown Past 800 Lines?
DevMeth checks the 48 known AI-code failure patterns — not a penetration test or a security guarantee.
What the issue is
A source file over 800 lines, or a UI component over 400 lines, has outgrown being read, tested, and changed safely. Every new feature lands in the same heap, and every edit risks a collision with code a reader cannot see.
Why AI tools generate it
Agents grow files by appending edits to the cheapest target — the file they are already working in. Nobody ever tells them to split, so handlers, hooks, and helpers accumulate until the file is unreadable.
How DevMeth detects it
The scan counts physical lines in every source file and flags any file over 800 lines, plus .tsx/.jsx components over 400 lines. Generated code, declaration files, and tests are excluded so only maintainable source is judged.
Single source files have ballooned past 800 lines (UI components past 400) — the agent appended instead of structuring
WHAT WE FOUND
components/Dashboard.tsx — 612 lines — past the 400-line component cap
The fix, in three steps
List the file's top-level symbols, move each cohesive group to its own file, and re-export from the original so nothing breaks. Keep every new file under the caps.
Run a free scan and each finding carries a paste-ready fix prompt you can act on.
Maintainability findings ship in the Rescue Report — bundled with the Launch Pack or available on its own.
Try a free scanFAQ
Are the 800/400 numbers arbitrary?
They are conservative thresholds chosen so the check only fires on files that are unarguably hard to hold in one head — the finding is about the append pattern, not about style nitpicks.
Do I have to change how the app is wired to split a file?
No. Re-exporting the moved symbols from the original file keeps every existing import working, and you can update call sites at your own pace.
Why are tests and generated files excluded?
Tests and generated code have their own conventions and do not grow by agent appending in the same way. The check targets the source files a person and an agent both edit by hand.
DevMeth checks the 48 known AI-code failure patterns — not a penetration test or a security guarantee. A clear result means each known pattern was checked and found clear or not applicable for your app; it is not a guarantee of security.