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Javascript Mastery

Checked
poletron·vlatest·backend·CC0-1.0

Generates robust, production-ready JavaScript code for backend systems, optimizing performance and adhering to best practices.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add odjaramillo/custom-rules --skill javascript-mastery -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

poletron

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned poletron/custom-rules at aba6668777.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
aba6668777
Manifest
registry/skills/javascript-mastery/SKILL.md
Scanned
2 files, 1,199 lines
Copies in repo
2 — all of them scanned
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

What it does

This skill, poletron-javascript-mastery, provides advanced JavaScript coding capabilities to AI agents. It allows agents to generate complex code snippets, debug existing JavaScript, and understand intricate JavaScript concepts. The skill is designed to significantly enhance an agent's ability to handle backend development tasks involving JavaScript.

When to use it

  • Automated Code Generation: Generate boilerplate code for Node.js applications or React components based on specifications.
  • Debugging Assistance: Receive help identifying and fixing errors in existing JavaScript codebases.
  • JavaScript Concept Explanation: Get clear explanations of advanced JavaScript features like closures, prototypes, or asynchronous programming.
  • Code Refactoring: Request assistance in improving the efficiency and readability of existing JavaScript functions.

Key capabilities

  • Advanced JavaScript coding
  • Debugging support
  • Explanation of complex concepts
  • Code refactoring suggestions

Example prompts

  • "Generate a Node.js script to fetch data from an API and save it to a file."
  • "Explain how closures work in JavaScript with a simple example."
  • "Refactor this JavaScript function to be more efficient: [paste code here]"

Tips & gotchas

The skill requires a basic understanding of JavaScript syntax. Providing clear and specific instructions will yield the best results when generating or debugging code.