ZOMBIE CODE DETECTION

The dead code your scanner swears is alive.

Zombie code compiles, imports cleanly and calls itself in a tidy little loop — and no entry point in your app ever reaches it. Mapnostics builds the call graph, walks it from every real entry point, and hands you the whole orphaned cluster to delete.

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mapnostics.com/repo/acme-platform/zombie-code

Zombie Code

Functions that exist in a call chain but are never triggered by any entry point

Last scanned 31 Aug, 09:22Re-run Detection

Zombie Detection Pipeline100%

Clearing previous zombie data…

Building call graph…

✓ 312 files walked · 4,180 call edges

Detecting unreachable functions…

✓ Detection complete — 8 zombie functions in 5 files

Zombie Code Overview

8 zombie functions detected

5 high-confidence zombies (≥90%) — verify, then remove

3 medium-confidence zombies — review recommended

5 files affected

Fix firstlib/reports/export.ts3 zombies · start here →

All (8)High (5)Medium (3)

export.ts

lib/reports/export.ts

3 zombiesHigh⌄

handleLegacyExport

L44–91ZOMBIE

Reachable from two other functions, but no route, page, job or CLI entry point reaches any of them.

Nobody callshandleLegacyExport→buildCsvRows→escapeCell— all zombie

Feature flags

Flags stuck permanently on or off are the most common form of zombie code

Re-scan

Decided in code — safe to act on

ENABLE_NEW_BILLINGalways onlib/flags.ts

LEGACY_CSV_EXPORTalways offlib/reports/export.ts

Set at runtime — needs production data

Mapnostics can find these flags but not their live values. A flag stuck on for months reads identically to one toggled yesterday.

✓

Reachability, not reference counts

A dead-code scan stops when every function has a caller. Zombie detection keeps going — it asks whether anything outside the cluster ever calls in.

✓

The whole chain, named

Every finding shows the call chain behind it, so you delete the orphaned group in one commit instead of breaking the next function along.

✓

Feature flags included

A flag hard-off for a year is the most common zombie. Mapnostics splits flags into decided-in-code and set-at-runtime, so you know which are safe to act on.

Find your zombie code in under 2 minutes.

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