Ontologic

A TypeScript toolkit for building software that speaks your domain's language. Model your business rules, protect your invariants, and make failures explicit.

Documentation

Full documentation, guides, and examples are available at:

ontologic.site

Quick start

npm install ontologic

What's inside

• Domain Entity — Entities that own their state and enforce their own rules
• Invariants — Business rules checked on every state read, not just after specific operations
• Domain Events — Immutable, versioned facts about what happened in your domain
• Result Pattern — Typed domain failures as return values, not hidden exceptions
• Repository — Persistence interface that saves entity state and events atomically
• Event Bus — Types event bus that allows to publish and listen to your domain events

Examples

A complete example (entity, invariants, events, use cases) is in the examples/ directory — a credit balance aggregate with creation, credit, debit, and error handling.

License

MIT