Code Review Checklist
shareAI-lab/learn-claude-code
Reviews code against a five-part checklist covering security, correctness, performance, maintainability and testing, and reports findings in a fixed format.
A skill your agent uses when reviewing scripts, client components, bundles, or runtime behavior related to Prevent common memory leak patterns.
Install Memory Leaks
$ npx skills add thedaviddias/Front-End-Checklist --skill memory-leaks -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install thedaviddias/Front-End-Checklist memory-leaks --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/memory-leaks .claude/skills/memory-leaks && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "memory-leaks" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/memory-leaks into .claude/skills/memory-leaks/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "memory-leaks", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/memory-leaksType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add thedaviddias/Front-End-Checklist --skill memory-leaks -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install thedaviddias/Front-End-Checklist memory-leaks --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/memory-leaks .agents/skills/memory-leaks && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "memory-leaks" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/memory-leaks into .agents/skills/memory-leaks/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "memory-leaks", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add thedaviddias/Front-End-Checklist --skill memory-leaks -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install thedaviddias/Front-End-Checklist memory-leaks --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/memory-leaks .cursor/skills/memory-leaks && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "memory-leaks" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/memory-leaks into .cursor/skills/memory-leaks/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "memory-leaks", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/thedaviddias/Front-End-Checklist.git --path skills/memory-leaks--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add thedaviddias/Front-End-Checklist --skill memory-leaks -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install thedaviddias/Front-End-Checklist memory-leaks --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/memory-leaks .gemini/skills/memory-leaks && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "memory-leaks" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/memory-leaks into .gemini/skills/memory-leaks/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "memory-leaks", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install thedaviddias/Front-End-Checklist memory-leaksInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add thedaviddias/Front-End-Checklist --skill memory-leaks -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/memory-leaks .github/skills/memory-leaks && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "memory-leaks" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/memory-leaks into .github/skills/memory-leaks/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "memory-leaks", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add thedaviddias/Front-End-Checklist --skill memory-leaks -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install thedaviddias/Front-End-Checklist memory-leaks --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/memory-leaks .opencode/skills/memory-leaks && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "memory-leaks" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/memory-leaks into .opencode/skills/memory-leaks/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "memory-leaks", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
memory-leaks- GitHub stars
- 74k
- Token cost
- ~561 tokens
- SKILL.md length
- 250 words
- Files
- 2 (incl. references)
- Skills in repo
- 390
- Repo updated
- First seen
- Licence
- MIT
At a glance
A skill your agent uses when reviewing scripts, client components, bundles, or runtime behavior related to Prevent common memory leak patterns.
- Reviewing scripts
- SKILL.md covers Quick Reference, Check, Fix and Explain, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Client components
What it does
Memory Leaks is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing scripts, client components, bundles, or runtime behavior related to Prevent common memory leak patterns. Inspect both source code and the browser execution path so fixes target the real bottleneck or bug.
Its SKILL.md is about 560 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/rule.md`).
It sits in Development, covering Performance optimization. The repository describes itself as: 🗂 The essential checklist for modern web development, for humans and AI agents. The licence is MIT.
When your agent uses it
- Reviewing scripts
- Client components
- Runtime behavior related to Prevent common memory leak patterns
Example prompts
- “/memory-leaks”
What it can do on your machine
Read from SKILL.md and the folder at commit e8d14d0. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
frontendchecklist.io
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Memory Leaks loads about 561 tokens when it runs, and up to ~2.1k if it reads all its reference files. Until then it costs about 59 tokens; SKILL.md has 250 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from thedaviddias/Front-End-Checklist at commit e8d14d0, republished under its MIT licence (© thedaviddias). 250 words, ~561 tokens.
Download SKILL.mdSave it as
.claude/skills/memory-leaks/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- memory-leaks
- description
- Use when reviewing scripts, client components, bundles, or runtime behavior related to Prevent common memory leak patterns. Inspect both source code and the browser execution path so fixes target the real bottleneck or bug.
- metadata.category
- javascript
- metadata.priority
- high
- metadata.difficulty
- intermediate
- metadata.estimatedTime
- 25
- metadata.source
- frontendchecklist.io
- metadata.url
- https://frontendchecklist.io/rules/javascript/memory-leaks
Prevent common memory leak patterns
Memory leaks cause applications to consume increasing amounts of memory over time, eventually slowing the browser tab or crashing it. In single-page applications, where users don't reload the page, small leaks in components accumulate with each navigation and can make an app unusable after 30 minutes of use.
Quick Reference
- Remove event listeners when the element or component is destroyed
- Clear setInterval and setTimeout when they're no longer needed
- Avoid storing DOM references in long-lived objects after elements are removed
- Use WeakMap and WeakSet when storing metadata about objects you don't own
- Use AbortController to cancel stale async requests when UI state changes
Check
Analyze this code for memory leak patterns: uncleaned event listeners, retained DOM references after removal, closures holding large objects, and uncleared timers. Also flag fetches and async tasks that continue after the owning component or view is gone.
Fix
Fix the memory leaks in this code by cleaning up event listeners, clearing timers, canceling stale async requests, and releasing DOM references when they're no longer needed.
Explain
Explain the four most common JavaScript memory leak patterns and how to detect them with Chrome DevTools.
Code Review
Review scripts, client components, and browser execution paths related to Prevent common memory leak patterns. Flag exact imports, event handlers, runtime side effects, or blocking operations that violate the rule, and state how the change should be verified in the browser.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
Rule page: https://frontendchecklist.io/rules/javascript/memory-leaks
© thedaviddias, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file (references) in skills/memory-leaks of thedaviddias/Front-End-Checklist.
- SKILL.md
- references/rule.md
Open the folder on GitHubat commit e8d14d0
Compare with similar skills
Memory Leaks next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Memory Leaks this skillthedaviddias/Front-End-Checklist | 74k | — | ~561 | Automated safety check: Pass | MIT | |
| Code Review ChecklistshareAI-lab/learn-claude-code | 78k | 4 repos | ~1.1k | Automated safety check: Pass | MIT | |
| LLM Torch Profiler Analysissgl-project/sglang | 37k | 2 repos | ~6.4k | Automated safety check: Pass | Apache-2.0 | |
| Pycrazyguitar/pysheeet | 8.2k | — | ~886 | Automated safety check: Pass | MIT | |
| Cmux Debugging Guidemanaflow-ai/cmux | 28k | 1 repos | ~1.1k | Automated safety check: Pass | Custom licence | |
| Analyzing .NET Performancedotnet/skills | 5.6k | 3 repos | ~3.1k | Automated safety check: Pass | MIT |
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Related
Categories
Questions about Memory Leaks
What does Memory Leaks do?
A skill your agent uses when reviewing scripts, client components, bundles, or runtime behavior related to Prevent common memory leak patterns. Memory Leaks is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing scripts, client components, bundles, or runtime behavior related to Prevent common memory leak patterns.
When should I use Memory Leaks?
Memory Leaks fits situations like: reviewing scripts; client components; runtime behavior related to Prevent common memory leak patterns.
How do I install Memory Leaks in Claude Code?
Run `npx skills add thedaviddias/Front-End-Checklist --skill memory-leaks -a claude-code`. Or copy the skill folder (skills/memory-leaks in thedaviddias/Front-End-Checklist) into .claude/skills/memory-leaks in your project. Claude Code loads it when a task matches its description.
How do I install Memory Leaks in Codex?
Run `npx skills add thedaviddias/Front-End-Checklist --skill memory-leaks -a codex`. Or copy the skill folder (skills/memory-leaks in thedaviddias/Front-End-Checklist) into .agents/skills/memory-leaks in your project. Codex loads it when a task matches its description.
Can I use Memory Leaks in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add thedaviddias/Front-End-Checklist --skill memory-leaks -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/memory-leaks, .gemini/skills/memory-leaks, .github/skills/memory-leaks and .opencode/skills/memory-leaks in your project.
What does Memory Leaks need to run?
SKILL.md names no scripts, command-line tools or credentials: Memory Leaks is instructions for the agent only.
Does Memory Leaks access the network?
SKILL.md names 1 domain. As links in the text: frontendchecklist.io. This is read from the text; nothing was executed.
Is Memory Leaks safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Memory Leaks use?
Memory Leaks is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Memory Leaks use?
About 561 tokens (SKILL.md is roughly 2.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1.5k tokens, read only when the agent opens those files.
What are the alternatives to Memory Leaks?
Skills that share tags, products or a category with Memory Leaks: Code Review Checklist (shareAI-lab/learn-claude-code, 78k stars), LLM Torch Profiler Analysis (sgl-project/sglang, 37k stars), Py (crazyguitar/pysheeet, 8.2k stars) and Cmux Debugging Guide (manaflow-ai/cmux, 28k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Memory Leaks?
thedaviddias (a GitHub user) maintains it in thedaviddias/Front-End-Checklist, which has 74,421 GitHub stars. The repository holds 390 skills in this directory. The repository was last updated on October 6, 2026.
Source: thedaviddias/Front-End-Checklist on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.