ddd-es-node

ddd-es-node

DDD and Event Sourcing primitives for nodejs

Install

npm install ddd-es-node --save

Usage

import { Entity } from 'ddd-es-node';
import { OrderCancelledEvent } from './events';

class Order extends Entity {
  constructor(id) {
    super(id, Entity.CONFIG((self, event) => {
      if(event instanceof OrderCancelledEvent) {
        this.cancelled = true;
      }
    }));
  }
  cancel() {
    if(this.cancelled) {
      throw new Error('Order already cancelled');
    } else {
      this.dispatch(this.id, new OrderCancelledEvent());
    }
  }
}