New: 97,000+ skills indexed from GitHub repos with 100+ stars · every skill safety-checkedBrowse top skillsTop skills
Esc to closeBrowse all skills
Submit a skillBrowse skills
Submit a skillBrowse skills

Agent skill

Javascript Pro

by davila7 in davila7/claude-code-templates

Master modern JavaScript with ES6+, async patterns, and Node.js APIs.

MITAuto-check passedDevelopment

Install Javascript Pro

skills CLI
$ npx skills add davila7/claude-code-templates --skill javascript-pro -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install davila7/claude-code-templates javascript-pro --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/davila7/claude-code-templates.git skills-src && mkdir -p .claude/skills && cp -r skills-src/cli-tool/components/skills/development/javascript-pro .claude/skills/javascript-pro && rm -rf skills-src

Use ~/.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/

Facts

Skill name
javascript-pro
GitHub stars
32k
Used in
7 other repos
Token cost
~424 tokens
SKILL.md length
193 words
Files
1
Skills in repo
477
Repo updated
First seen
Licence
MIT

At a glance

Master modern JavaScript with ES6+, async patterns, and Node.js APIs.

  • Works in 4 steps: Identify runtime targets and constraints. → Choose async patterns and module system. → Implement with robust error handling. → …
  • Tasks that involve Async programming
  • SKILL.md covers Use this skill when, Do not use this skill when, Instructions and Focus Areas, plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Javascript Pro is an agent skill from davila7/claude-code-templates. Master modern JavaScript with ES6+, async patterns, and Node.js APIs. Handles promises, event loops, and browser/Node compatibility.

Its SKILL.md is about 420 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Development, covering Async programming. It works with JavaScript and Node.js. The repository describes itself as: CLI tool for configuring and monitoring Claude Code. The licence is MIT.

When your agent uses it

  • Tasks that involve Async programming

Example prompts

  • “/javascript-pro”

Requirements

  • Node.js

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

  1. Identify runtime targets and constraints.
  2. Choose async patterns and module system.
  3. Implement with robust error handling.
  4. Validate performance and compatibility.

What it can do on your machine

Read from SKILL.md and the folder at commit 4c82aba. 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

    No URLs in SKILL.md.

    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

Javascript Pro loads about 424 tokens when it runs. Until then it costs about 37 tokens; SKILL.md has 193 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~37
When it runs · the whole SKILL.md, loaded when a task matches
~424

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 davila7/claude-code-templates at commit 4c82aba, republished under its MIT licence (© davila7). 193 words, ~424 tokens.

Download SKILL.mdSave it as .claude/skills/javascript-pro/SKILL.md (or your agent's skills folder).
name
javascript-pro
description
Master modern JavaScript with ES6+, async patterns, and Node.js APIs. Handles promises, event loops, and browser/Node compatibility.
risk
safe
source
community
date_added
2026-02-27

You are a JavaScript expert specializing in modern JS and async programming.

Use this skill when

  • Building modern JavaScript for Node.js or browsers
  • Debugging async behavior, event loops, or performance
  • Migrating legacy JS to modern ES standards

Do not use this skill when

  • You need TypeScript architecture guidance
  • You are working in a non-JS runtime
  • The task requires backend architecture decisions

Instructions

  1. Identify runtime targets and constraints.
  2. Choose async patterns and module system.
  3. Implement with robust error handling.
  4. Validate performance and compatibility.

Focus Areas

  • ES6+ features (destructuring, modules, classes)
  • Async patterns (promises, async/await, generators)
  • Event loop and microtask queue understanding
  • Node.js APIs and performance optimization
  • Browser APIs and cross-browser compatibility
  • TypeScript migration and type safety

Approach

  1. Prefer async/await over promise chains
  2. Use functional patterns where appropriate
  3. Handle errors at appropriate boundaries
  4. Avoid callback hell with modern patterns
  5. Consider bundle size for browser code

Output

  • Modern JavaScript with proper error handling
  • Async code with race condition prevention
  • Module structure with clean exports
  • Jest tests with async test patterns
  • Performance profiling results
  • Polyfill strategy for browser compatibility

Support both Node.js and browser environments. Include JSDoc comments.

© davila7, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in cli-tool/components/skills/development/javascript-pro of davila7/claude-code-templates.

Open the folder on GitHubat commit 4c82aba

Used in 7 other repositories

We found 20 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 7 other GitHub owners. This page covers the copy in davila7/claude-code-templates, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Javascript Pro 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.

Javascript Pro compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Javascript Pro this skilldavila7/claude-code-templates32k7 repos~424Automated safety check: PassMIT
JavaScript ProJeffallan/claude-skills12k—~1.2kAutomated safety check: PassMIT
Neo4j Driver Javascript Skillneo4j-contrib/neo4j-skills114—~3.5kAutomated safety check: NotesMIT
Generate Release Notesteambit/bit18k—~2.2kAutomated safety check: PassCustom licence
ast-grep Codemod Referencewarp-drive-data/warp-drive3.2k—~2.6kAutomated safety check: PassMIT
Coding Standardskurealnum/dotfiles29017 repos~2.9kAutomated safety check: PassNone

Similar skills

  • JavaScript Pro

    Jeffallan/claude-skills

    Writes and reviews modern JavaScript: ES2023+ syntax, async/await, ESM modules, Node.js and browser APIs, with linting, leak checks and Jest tests.

    12k GitHub stars~1.2k tokensUpdated 4 days ago
    DevelopmentAuto-check passed

  • Neo4j Driver Javascript Skill

    neo4j-contrib/neo4j-skills

    Neo4j JavaScript/TypeScript Driver v6 — driver lifecycle, executeQuery, managed transactions (executeRead/executeWrite), session.run, Integer handling, JSON serialization, record access, async/await…

    114 GitHub stars~3.5k tokensUpdated today
    DevelopmentAuto-check: notes

  • Generate Release Notes

    teambit/bit

    Generate comprehensive release notes for Bit from git commits and pull requests.

    18k GitHub stars~2.2k tokensUpdated today
    DevelopmentAuto-check passed

  • ast-grep Codemod Reference

    warp-drive-data/warp-drive

    Reference for writing and debugging TypeScript and JavaScript codemods with @ast-grep/napi: parsing, node queries, meta-variables, rule objects and editing.

    3.2k GitHub stars~2.6k tokensUpdated today
    DevelopmentAuto-check passed

  • Coding Standards

    kurealnum/dotfiles

    Universal coding standards, best practices, and patterns for TypeScript, JavaScript, React, and Node.js development.

    290 GitHub starsUsed in 17 repos~2.9k tokens
    DevelopmentAuto-check passed

  • Review Userscript Change

    cyfung1031/userscript-supports

    Review browser userscript changes in JavaScript userscript files, focusing on scripting content and its HTML/CSS behavior, with metadata as a binding gate plus DOM/CSS, userscript-manager APIs…

    121 GitHub stars~1.8k tokensUpdated today
    DevelopmentAuto-check passed

More from davila7/claude-code-templates

All 477 skills in this repo

  • Perplexity Web Search

    davila7/claude-code-templates

    Runs web-grounded searches through Perplexity's Sonar models over OpenRouter for current events, recent literature and cited facts beyond the model's training cutoff.

    32k GitHub starsUsed in 12 repos~3.5k tokens
    Auto-check: notes

  • Neuropixels Data Analysis

    davila7/claude-code-templates

    Analyzes Neuropixels recordings from SpikeGLX or Open Ephys through preprocessing, drift correction, Kilosort4 spike sorting, quality metrics and curation.

    32k GitHub starsUsed in 10 repos~2.8k tokens
    Auto-check passed

  • Scientific Venue Templates

    davila7/claude-code-templates

    Supplies LaTeX templates and formatting rules for journals, conferences, posters, and grant proposals, then can check a draft against them.

    32k GitHub starsUsed in 9 repos~5.1k tokens
    Auto-check: notes

  • Brand Voice Content Creator

    davila7/claude-code-templates

    Analyzes a brand's existing writing to lock in a consistent voice, then builds SEO blog posts and platform-specific social content around it.

    32k GitHub starsUsed in 2 repos~1.9k tokens
    Auto-check passed

  • CAPA Officer

    davila7/claude-code-templates

    Guides corrective and preventive action (CAPA) work in a quality management system, from initiation and root cause analysis through effectiveness verification.

    32k GitHub starsUsed in 1 repo~2k tokens
    Auto-check passed

  • Fda Consultant Specialist

    davila7/claude-code-templates

    Senior FDA consultant and specialist for medical device companies including HIPAA compliance and requirement management.

    32k GitHub starsUsed in 1 repo~2.7k tokens
    Auto-check passed

Works with

Categories

Questions about Javascript Pro

What does Javascript Pro do?

Master modern JavaScript with ES6+, async patterns, and Node.js APIs. Javascript Pro is an agent skill from davila7/claude-code-templates.js APIs.

When should I use Javascript Pro?

Javascript Pro fits situations like: tasks that involve Async programming.

How do I install Javascript Pro in Claude Code?

Run `npx skills add davila7/claude-code-templates --skill javascript-pro -a claude-code`. Or copy the skill folder (cli-tool/components/skills/development/javascript-pro in davila7/claude-code-templates) into .claude/skills/javascript-pro in your project. Claude Code loads it when a task matches its description.

How do I install Javascript Pro in Codex?

Run `npx skills add davila7/claude-code-templates --skill javascript-pro -a codex`. Or copy the skill folder (cli-tool/components/skills/development/javascript-pro in davila7/claude-code-templates) into .agents/skills/javascript-pro in your project. Codex loads it when a task matches its description.

Can I use Javascript Pro 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 davila7/claude-code-templates --skill javascript-pro -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/javascript-pro, .gemini/skills/javascript-pro, .github/skills/javascript-pro and .opencode/skills/javascript-pro in your project.

What does Javascript Pro need to run?

SKILL.md names no scripts, command-line tools or credentials: Javascript Pro is instructions for the agent only. Our summary lists: Node.js.

Does Javascript Pro access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Javascript Pro 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 Javascript Pro use?

Javascript Pro 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 Javascript Pro use?

About 424 tokens (SKILL.md is roughly 1.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Javascript Pro?

Skills that share tags, products or a category with Javascript Pro: JavaScript Pro (Jeffallan/claude-skills, 12k stars), Neo4j Driver Javascript Skill (neo4j-contrib/neo4j-skills, 114 stars), Generate Release Notes (teambit/bit, 18k stars) and ast-grep Codemod Reference (warp-drive-data/warp-drive, 3.2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Javascript Pro?

davila7 (a GitHub user) maintains it in davila7/claude-code-templates, which has 32,432 GitHub stars. The repository holds 477 skills in this directory. The repository was last updated on October 7, 2026.

Source: davila7/claude-code-templates on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.