MCPInstall

rule-writing

Implement React Doctor rules from a validated contract. Use when writing oxlint rules, planning syntax or control-flow detection, designing adversarial tests, reusing syntax tree utilities, or updating rule registration.

Installs
440
Last 24h
—
Trending rank
—
Security
Not audited

Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/millionco/react-doctor --skill rule-writing
  1. 01

    Install

    Run the command in your project. The CLI asks which agents to install for.

  2. 02

    Describe the task

    Ask your agent for something this skill covers. It loads rule-writing automatically when relevant.

  3. 03

    Review the result

    The agent follows the SKILL.md steps, scripts and references bundled with the skill.

SKILL.md

The instructions your agent reads when the skill is triggered.

Write a rule

Implement the rule-research contract. If none exists, define a compact contract before editing.

Plan the detector

State the diagnostic condition, required syntax and bindings, unsupported cases, and adversarial tests. Keep this plan short when the user already requested implementation.

Before adding a helper, search for one to reuse:

bunx @rayhanadev/truffler "<symbol-or-behavior>" \
  packages/oxlint-plugin-react-doctor/src/plugin \
  --kind function,interface,type,constant --limit 20

Read docs/HOW_TO_WRITE_A_RULE.md, nearby rules, utilities, and tests.

Implement and test

  1. Write detector pseudocode.
  2. Add adversarial valid and invalid tests.
  3. Implement only the contract's supported behavior.
  4. Reuse utilities before creating new ones.
  5. Update generated registration with repository commands.
  6. Run focused tests and package checks.
  7. Use rde-eval when real-code feedback could expose noise.
  8. Hand the finished change to rule-validate.

Account for:

  • import aliases and shadowed bindings
  • nested functions that do not execute immediately
  • transparent JavaScript and TypeScript wrappers
  • dynamic computed properties
  • imported or unresolved values
  • framework escape hatches
  • control-flow paths required by the diagnostic claim
  • regressions found by reviews or evals

Keep uncertain cases quiet. Match the message to the condition the detector proves.

Run repository checks

Use @antfu/ni commands:

nr test
nr lint
nr typecheck
nr format
nr smoke:json-report

Use focused commands while iterating. Record each command that ran.

Report the implementation

Report changed rules, tests, registration, reused or added utilities, reported behavior, intentional non-goals, and validation results. End with the rule-validate handoff.

FAQ

What does the rule-writing skill do?

Implement React Doctor rules from a validated contract. Use when writing oxlint rules, planning syntax or control-flow detection, designing adversarial tests, reusing syntax tree utilities, or updating rule registration.

How do I install rule-writing?

Run npx skills add https://github.com/millionco/react-doctor --skill rule-writing in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/rule-writing/ (personal) or .claude/skills/rule-writing/ (project).

Which AI agents can use rule-writing?

Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.

Is rule-writing safe to install?

No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.

Who maintains rule-writing?

It is published by millionco in millionco/react-doctor. It has 440 recorded installs.

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