Make the shape explicit
Strong types and shared definitions keep domain rules visible from the first function to the public API.
A foundation for dependable software
Build on solid ground.
Getfjell is a practical TypeScript ecosystem for modelling, validating, and serving data without turning every application into a one-off experiment.
OPEN SOURCE · Apache 2.0TYPESCRIPT-FIRST · Strict by defaultCOMPOSABLE · Use what you need
Less glue.
More clarity.
Good systems make the important things obvious: what your data means, how it moves, and where the boundaries are. Fjell gives those decisions a dependable home.
Keep behavior consistent
Libraries, registries, validation, and storage adapters work together instead of multiplying conventions.
Grow without rewrites
Start small, swap infrastructure later, and keep your application code focused on the problem it solves.
The Fjell foundation
A system,
not a snippet.
Each layer has a clear job. Together they form a path from domain model to production endpoint—without hiding the trade-offs.
HTTP & routing
@fjell/http-apiDomain operations
@fjell/libValidation & types
@fjell/validationCore definitions
@fjell/coreStorage adapters
firestore · sequelize · gcs