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Javascript Pro

Seth HobsonCommunityCreated by Seth Hobson

  • Subagent
  • Role or persona
  • Software development
  • MIT
  • No issues found
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From the author

Master modern JavaScript with ES6+, async patterns, and Node.js APIs. Handles promises, event loops, and browser/Node compatibility. Use PROACTIVELY for JavaScript optimization, async debugging, or complex JS patterns.
— the description by Seth Hobson

AutoGineer summary

Written by AutoGineer from the skill’s own files, not by the author

javascript-pro acts as a specialized consultant for developers working with modern JavaScript. It provides guidance on ES6+ syntax, asynchronous patterns, and performance optimization across both Node.js and browser environments. The skill emphasizes clean, maintainable code, proper error handling, and modern architectural patterns to ensure compatibility and efficiency.

What it does

  • Provides expert advice on ES6+ features and modern syntax.
  • Refactors legacy callback-based code into clean async/await patterns.
  • Offers strategies for managing the event loop and microtask queues.
  • Assists with cross-browser compatibility and polyfill strategies.
  • Generates JSDoc-documented code and Jest test suites.
  • Analyzes code for performance bottlenecks and bundle size optimization.

When to use it

  • When you need to refactor complex promise chains into readable async/await code.
  • When debugging race conditions or event loop issues in Node.js.
  • When planning a migration to TypeScript or modernizing older JS codebases.
  • When you need to ensure your code is optimized for both browser and server-side execution.

Advantages

  • Promotes modern, functional programming patterns.
  • Reduces technical debt by eliminating callback hell.
  • Ensures consistent error handling across asynchronous operations.
  • Improves application performance through optimized async patterns.

Usage examples

“Refactor this nested callback function into a clean async/await pattern.”
The agent provides a modernized version of the function using async/await, including proper try/catch error handling and improved readability.
“How can I optimize this Node.js function to avoid blocking the event loop?”
The agent analyzes the code and suggests offloading heavy computations or using non-blocking I/O patterns to maintain event loop responsiveness.

Install

  1. Download the subagent as a ZIP:

    https://mp-staging.autogineer.com/agent-skills/wshobson/javascript-pro/download

  2. Extract the subagent file into .claude/agents in your project (use ~/.claude/agents for every project):

    mkdir -p .claude/agents && unzip -j javascript-pro.zip 'javascript-pro/javascript-pro.md' -d .claude/agents

  3. Keep the LICENSE and ATTRIBUTION.md files from the ZIP with your copy.

Documentation by Seth Hobson

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

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.

Files

LICENSE

MIT License

Copyright (c) 2024 Seth Hobson

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

Requirements and compatibility

Written for: Claude Code

Works with: Claude Code

“Works with” means the tool reads the open Agent Skills format; a skill written for one tool may use features others lack.

Security

No issues found by our static scan· No issues found

A static scan is not a guarantee. Skills are third-party content: review a skill before you let an agent use it.

Attribution and licence

Created by
Seth Hobson
Publisher
Seth Hobson (Community)
Source
wshobson/agents · plugins/javascript-typescript/agents/javascript-pro.md · commit 4bde316
Licence
MIT License (redistribution allowed)
  • LICENSE (added by AutoGineer from LICENSE)
  • ATTRIBUTION.md (written by AutoGineer)
Synced

AutoGineer is not affiliated with or endorsed by Seth Hobson.

Download ZIP

The ZIP holds the skill’s files, its licence files and an ATTRIBUTION.md. Download javascript-pro.zip