detecting-memory-leaks

This skill enables Claude to detect potential memory leaks and analyze memory usage patterns in code. It is triggered when the user requests "detect memory leaks", "analyze memory usage", or similar phrases related to memory leak detection and performance analysis. The skill identifies potential issues such as unremoved event listeners, closures preventing garbage collection, uncancelled timers, unbounded cache growth, circular references, detached DOM nodes, and unnecessary global state accumulation. It then provides detailed fix recommendations. Use this skill to proactively identify and resolve memory leaks, improving application performance and stability.

Install with Tessl CLI

npx tessl i github:jeremylongshore/claude-code-plugins-plus-skills --skill detecting-memory-leaks

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Review — 53%

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Evaluation — 96%

Agent success when using this skill

Validation — 11 / 11 Passed

Validation for skill structure

SKILL.md

Review

Evals

Evaluation results

100%

Memory Investigation: Dashboard Widget Component

Event listener and DOM leaks

Criteria

Without context

With context

Detects resize/scroll listeners

100%

Detects widget click/hover listeners

100%

Detects keydown listener leak

100%

Detects detached DOM nodes

100%

Fix for window listeners

100%

Fix for anonymous listeners

100%

Fix for document keydown

100%

Fix for detached DOM accumulation

100%

Report produced

100%

Code location references

100%

No false positives

100%

Without context: $0.3112 · 2m 3s · 13 turns · 14 in / 5,125 out tokens

With context: $0.3430 · 2m 45s · 16 turns · 15 in / 5,630 out tokens

100%

Memory Leak Investigation: Product Search Service

Cache and closure leaks

Criteria

Without context

With context

Detects queryCache growth

100%

Detects queryStats growth

100%

Detects pipelineCache growth

100%

Detects closure retaining userProfile

100%

Fix for queryCache eviction

100%

Fix for pipelineCache eviction

100%

Fix for closure retention

100%

Report produced

100%

Code location references

100%

No false positives

100%

Mechanism explained

100%

Without context: $0.1658 · 1m 22s · 8 turns · 9 in / 3,494 out tokens

With context: $0.5189 · 3m 45s · 26 turns · 23 in / 8,481 out tokens

90%

-2%

Memory Investigation: Background Job Processor

Timer and global state leaks

Criteria

Without context

With context

Detects uncancelled intervals

100%

Detects uncancelled timeouts

100%

Detects activeShipments accumulation

20%

10%

Detects auditLog accumulation

100%

Detects eventHistory accumulation

100%

Detects circular reference

100%

Fix for timers

100%

Fix for global accumulation

100%

Fix for circular reference

100%

Report produced

100%

Code location references

100%

No false positives

100%

50%

Without context: $0.2159 · 1m 54s · 9 turns · 10 in / 3,905 out tokens

With context: $0.4108 · 2m 44s · 22 turns · 54 in / 5,766 out tokens

97%

-3%

Python Worker Memory Growth Investigation

Python circular reference and cache leaks

Criteria

Without context

With context

Detects parent-child cycle

100%

Identifies __del__ as GC blocker

100%

Explains GC mechanism

100%

70%

Detects unbounded result store

100%

Fix for circular reference

100%

Fix addresses __del__

100%

Fix for result store

100%

Report file produced

100%

Code location references

100%

No false positives

100%

Large payload callout

100%

Without context: $0.1970 · 1m 40s · 10 turns · 11 in / 4,045 out tokens

With context: $0.4139 · 2m 50s · 19 turns · 51 in / 6,029 out tokens

96%

React Dashboard Memory Growth Analysis

React hooks event listener and timer leaks

Criteria

Without context

With context

Detects missing interval cleanup

100%

Detects missing event listener cleanup

100%

Detects activePollers accumulation

100%

Explains interval leak mechanism

100%

Explains listener accumulation mechanism

100%

Fix for interval

100%

Fix for event listeners

100%

Fix for activePollers

100%

Report file produced

100%

Code location references

100%

No false positives

33%

Without context: $0.3123 · 2m 28s · 17 turns · 18 in / 4,837 out tokens

With context: $0.3653 · 2m 41s · 19 turns · 100 in / 4,978 out tokens

97%

Message Bus Memory Leak Investigation

Targeted analysis and circular reference with WeakRef fix

Criteria

Without context

With context

Focuses on message_bus.js

100%

Detects Channel-Subscriber cycle

83%

75%

Identifies unsubscribe() flaw

100%

Explains GC prevention mechanism

90%

100%

Detects messageHistory growth

100%

Fix breaks back-reference

100%

Fix uses WeakRef or WeakMap

70%

100%

Fix for messageHistory

100%

Report file produced

100%

Code location references

100%

No false positives

100%

Without context: $0.2197 · 1m 41s · 10 turns · 11 in / 3,846 out tokens

With context: $0.2922 · 2m 21s · 16 turns · 49 in / 4,769 out tokens

Evaluated: about 4 hours ago
Agent: Claude Code

Table of Contents

Memory Investigation: Dashboard Widget Component Memory Leak Investigation: Product Search Service Memory Investigation: Background Job Processor Python Worker Memory Growth Investigation React Dashboard Memory Growth Analysis Message Bus Memory Leak Investigation

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