accounted/CONTRIBUTING.md

Contributing to Accounted

Thank you for your interest in contributing to Accounted. This guide covers the development workflow, coding standards, and submission process.

Everyone interacting in the project is expected to follow the Code of Conduct.

Getting Started

1. Fork the repository and clone your fork
2. Install dependencies: npm install
3. Start the dev server: npm run dev
4. Run tests: npm test

Supabase Setup

You need a Supabase project for local development:

1. Create a free project at supabase.com
2. Run all migrations from supabase/migrations/ against your project
3. Copy .env.example to .env and fill in your Supabase credentials:
   • NEXT_PUBLIC_SUPABASE_URL
   • NEXT_PUBLIC_SUPABASE_ANON_KEY
   • SUPABASE_SERVICE_ROLE_KEY

Development Workflow

1. Create a branch from main with a descriptive name
2. Make your changes following the code style below
3. Run the full check suite before submitting:

npm run lint
npm test
npm run build

4. Commit using Conventional Commits:
   • feat: new feature
   • fix: bug fix
   • refactor: code restructuring
   • test: adding or updating tests
   • docs: documentation changes

DCO Sign-Off

All commits must include a Signed-off-by line certifying that you have the right to submit the contribution under the project's license. This is the Developer Certificate of Origin (DCO).

Add the sign-off automatically with git commit -s:

feat: add VAT report export

Signed-off-by: Your Name <your.email@example.com>

If you forget, you can amend: git commit --amend -s.

Pull Requests

• Keep PRs focused on a single change
• Include a clear description of what and why
• Ensure CI passes (the core build resets extensions to empty, so core code must compile standalone)
• Link related issues if applicable

Extension Development

See ARCHITECTURE.md and docs/EXTENSIONS.md for the full extension architecture. Quick start:

npx tsx scripts/create-extension.ts --name my-ext --sector general --category operations --description "..."

Then add "my-ext" to extensions.config.json and run npm run setup:extensions.

Constraints:

• Extensions cannot use dynamic imports (Next.js bundling requirement)
• Core must build and run with zero extensions enabled
• Never import from @/extensions/ in core code

What Not to Do

• Don't modify enforcement triggers in migration 017 (legally required for Swedish accounting law)
• Don't insert directly into journal tables -- use the engine functions in lib/bookkeeping/engine.ts
• Don't break the core/extension boundary -- core must compile standalone without extensions
• Don't delete posted journal entries -- use storno reversal via reverseEntry()

Code Style

• TypeScript strict mode, no any unless unavoidable
• English for all code, comments, and commit messages
• Math.round(x * 100) / 100 for monetary calculations, never toFixed()
• Account numbers are strings ('1930', not 1930)
• All shared types go in types/index.ts

Questions?

Open a discussion or issue on GitHub. For security vulnerabilities, see SECURITY.md.