@jbpionnier/ddd v1.2.4

ts-ddd

Utilities types for Domain-Driven Design in TypeScript

!WARNING Work in progress.

Installation

npm install @jbpionnier/ddd

Usage

• ICommandBus / Command / CommandHandler
• IQueryBus / Query / QueryHandler
• IEventBus / Event / EventHandler
• AggregateRoot
• DomainEvent / DomainEventStream
• Entity / ValueObject
• Repository
• EventStream / Saga
• EventStore

ICommandBus / Command / CommandHandler

import { ICommandBus, ICommandHandler, Command } from '@jbpionnier/ddd'

class MyCommand implements Command {
  constructor(public readonly id: string) {}
}

@CommandHandler(MyCommand)
class MyCommandHandler implements ICommandHandler<ImportMediaCommand> {
  handle(command: MyCommand): void {
    console.log('Handling command', command)
  }
}
// Create the command bus
const commandBus: ICommandBus = new CommandBus()
commandBus.register(new MyCommandHandler())

// Execute the command
commandBus.execute(new MyCommand('123'))