Contributing

Thank you for your interest in contributing to the gnomAD Carrier Frequency Calculator. This guide covers development setup, code standards, and the pull request process.

Prerequisites

• Node.js 18 or later
• Bun package manager
• Git

Development Setup

Clone the Repository

git clone https://github.com/berntpopp/gnomad-carrier-frequency.git
cd gnomad-carrier-frequency

Install Dependencies

bun install

Start Development Server

bun run dev

The app runs at http://localhost:5173.

Run the Documentation Site

bun run docs:dev

The docs site runs at http://localhost:5174 (or the next available port).

Available Commands

Command	Description
bun run dev	Start development server
bun run build	TypeScript check + production build
bun run lint	Run ESLint with Vue 3 + TypeScript rules
bun run typecheck	Run vue-tsc type checking
bun run preview	Preview production build
bun run docs:dev	Start VitePress documentation dev server
bun run docs:build	Build documentation site

Code Style

• Framework: Vue 3 with Composition API and <script setup> syntax
• Language: TypeScript with strict mode
• UI Library: Vuetify 3 (Material Design components)
• State: Pinia stores with persisted state
• Naming: Composables use use* prefix (e.g., useGeneSearch), utilities are pure functions
• Config-driven: Magic numbers and strings go in src/config/ JSON files, not in component code

Before submitting a pull request, ensure all checks pass:

bun run lint      # No lint errors
bun run typecheck # No type errors
bun run build     # Builds successfully

Project Structure

src/
  api/           # gnomAD GraphQL client and queries
  components/    # Vue components (wizard/ subdirectory for wizard steps)
  composables/   # Reactive composables (useGeneSearch, useCarrierFrequency, etc.)
  config/        # JSON configuration files with typed loaders
  stores/        # Pinia stores (template store, history store)
  types/         # TypeScript type definitions
  utils/         # Pure utility functions (variant filters, template renderer)
docs/            # VitePress documentation site

Pull Request Process

1. Fork the repository and create a feature branch from main
2. Make your changes with clear, focused commits
3. Ensure all checks pass: lint, typecheck, build
4. Open a pull request with a description of what changed and why
5. Wait for review - the maintainer will review and merge or request changes

Reporting Issues

Use the GitHub issue tracker to report bugs or suggest features. Include:

• Steps to reproduce (for bugs)
• Expected vs. actual behavior
• Browser and OS information
• Screenshots if applicable

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See the Getting Started guide for a user-oriented walkthrough of the calculator, or the Reference section for technical details about methodology and filters.