Installation

Install the kernel package in an application:

yarn add @haskou/ddd-kernel

That is enough for the core kernel, contracts, domain primitives, dependency injection and in-memory adapters.

Install extra packages only for the adapters your application imports.

Pub/Sub Adapters

The in-memory pub/sub adapter has no extra runtime dependencies.

The AMQP adapter uses amqplib:

yarn add amqplib

DB Adapters

The in-memory repository adapter has no extra runtime dependencies.

The MongoDB repository adapter uses mongodb:

yarn add mongodb

UI Adapters

The Express adapter uses express, routing-controllers and decorator metadata packages:

yarn add express routing-controllers reflect-metadata class-transformer class-validator

Install cors only when enabling routingControllersOptions.cors:

yarn add cors

Other Adapters

Schedulers use node-cron:

yarn add node-cron

The Winston logger uses winston:

yarn add winston

WebSocket helpers use ws:

yarn add ws

TypeScript Resolution

The package publishes ESM, CommonJS and declaration files for every public subpath. Modern projects should prefer moduleResolution: "NodeNext" or "Bundler", but declaration mappings are also provided for projects still using classic moduleResolution: "node".