# ESLint Rule Composer

> Creates custom ESLint rules using the ESLint RuleTester API and AST Explorer patterns, generating rule implementations with auto-fix suggestions based on estree node types and scope analysis.

- Skill: `agentskillexchange/eslint-rule-composer` (Agent Skill)
- Install (CLI): `npx skillmds add agentskillexchange/eslint-rule-composer`
- Raw SKILL.md: https://api.skillmd.com/api/skills/agentskillexchange/eslint-rule-composer/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools, DevOps & Infra, Dev Tooling, Testing & QA
- Tags: Ast Explorer, Auto Fix, Eslint, Estree, Nodejs, Rule Composer, Rule Tester, Scope Analysis
- Author: agentskillexchange (https://skillmd.com/u/agentskillexchange)
- Updated: 2026-08-22
- Page: https://skillmd.com/skills/agentskillexchange/eslint-rule-composer

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# ESLint Rule Composer

Creates custom ESLint rules using the ESLint RuleTester API and AST Explorer patterns. Generates rule implementations with auto-fix suggestions based on estree node types and scope analysis.

## Installation

Use the upstream install or setup path that matches your environment:
- npm init @eslint/config@latest
- npx eslint yourfile.js

Requirements and caveats from upstream:
- To use ESLint, you must have [Node.js](https://nodejs.org/) (^20.19.0, ^22.13.0, or >=24) installed and built with SSL support. (If you are using an official Node.js distribution, SSL is always built in.)
- node-linker=hoisted
- ### Which Node.js versions does ESLint support?

Basic usage or getting-started notes:
- [Installation and Usage](#installation-and-usage)
- If you use ESLint's TypeScript type definitions, TypeScript 5.3 or later is required.
- ### npm Installation

- Source: https://github.com/eslint/eslint
- Extracted from upstream docs: https://raw.githubusercontent.com/eslint/eslint/HEAD/README.md

## Source

- [Agent Skill Exchange](https://agentskillexchange.com/skills/eslint-rule-composer/)