/setup-code-quality

You are setting up a project for automated code quality checks. Follow these steps carefully:

Step 1: Detect Project Type

Check for these files in the current directory to determine the project type:

• package.json → JavaScript/TypeScript (Node.js)
• pyproject.toml or requirements.txt or setup.py → Python
• go.mod → Go
• Cargo.toml → Rust
• composer.json → PHP
• build.gradle or pom.xml → Java

Read the relevant config file to understand the project structure.

Step 2: Check Existing Tools

Based on the project type, check if these tools are already configured:

JavaScript/TypeScript:

• Check package.json for: eslint, prettier, typescript, @typescript-eslint/*
• Check for config files: .eslintrc.*, .prettierrc.*, tsconfig.json
• Check package.json scripts for: lint, typecheck, type-check, or tsc

Python:

• Check for: mypy, pylint, black, ruff, flake8 in dependencies
• Check for config files: mypy.ini, .pylintrc, pyproject.toml
• Look for linting/type checking configurations

Go:

• Check for: golint, gofmt, staticcheck
• Go has built-in tools, check if project uses them

Rust:

• Check for: clippy, rustfmt (built-in to Rust toolchain)
• Check Cargo.toml for workspace configuration

Step 3: Install Missing Tools (if needed)

If tools are missing, install them based on the project type:

JavaScript/TypeScript:

# Detect package manager (npm, yarn, pnpm, bun)
# Install missing tools, e.g.:
npm install --save-dev eslint prettier typescript @typescript-eslint/parser @typescript-eslint/eslint-plugin

# Add scripts to package.json if missing:
# "lint": "eslint ."
# "typecheck": "tsc --noEmit"

Python:

pip install mypy pylint black ruff
# or add to requirements-dev.txt / pyproject.toml

Go:

go install golang.org/x/lint/golint@latest
go install honnef.co/go/tools/cmd/staticcheck@latest

Rust:

rustup component add clippy rustfmt

IMPORTANT: Always check if tools exist first. Only install if missing.

Step 4: Generate /fix Command

Create a file at .claude/commands/fix.md with the following structure:

---
name: fix
description: Run typechecking and linting, then spawn parallel agents to fix all issues
---

# Project Code Quality Check

This command runs all linting and typechecking tools for this project, collects errors, groups them by domain, and spawns parallel agents to fix them.

## Step 1: Run Linting and Typechecking

Run the appropriate commands for this project:

[INSERT PROJECT-SPECIFIC COMMANDS HERE]

## Step 2: Collect and Parse Errors

Parse the output from the linting and typechecking commands. Group errors by domain:
- **Type errors**: Issues from TypeScript, mypy, etc.
- **Lint errors**: Issues from eslint, pylint, ruff, clippy, etc.
- **Format errors**: Issues from prettier, black, rustfmt, gofmt

Create a list of all files with issues and the specific problems in each file.

## Step 3: Spawn Parallel Agents

For each domain that has issues, spawn an agent in parallel using the Task tool:

**IMPORTANT**: Use a SINGLE response with MULTIPLE Task tool calls to run agents in parallel.

Example:
- Spawn a "type-fixer" agent for type errors
- Spawn a "lint-fixer" agent for lint errors
- Spawn a "format-fixer" agent for formatting errors

Each agent should:
1. Receive the list of files and specific errors in their domain
2. Fix all errors in their domain
3. Run the relevant check command to verify fixes
4. Report completion

## Step 4: Verify All Fixes

After all agents complete, run the full check again to ensure all issues are resolved.

Replace [INSERT PROJECT-SPECIFIC COMMANDS HERE] with the actual commands for the detected project type.

JavaScript/TypeScript Example:

npm run lint
npm run typecheck

Python Example:

mypy .
pylint src/
black --check .

Go Example:

go vet ./...
staticcheck ./...
gofmt -l .

Rust Example:

cargo clippy -- -D warnings
cargo fmt -- --check

Step 5: Confirm Completion

After generating the /fix command, inform the user:

1. What project type was detected
2. Which tools were already present
3. Which tools were installed (if any)
4. That the /fix command has been created at .claude/commands/fix.md
5. How to use it: "Run /fix to lint, typecheck, and auto-fix all issues"

Important Notes:

• Always create the .claude/commands/ directory if it doesn't exist
• Ensure the YAML frontmatter includes both name and description
• The generated /fix command must spawn agents in parallel (single response, multiple Task tool calls)
• Tailor the commands to what's actually available in the project