@nedvisol/hexagon-adapter-express v0.1.1

Overview

This package provides an adapter that maps

See full documentation

The motivation behind this library is to help make your Node microservice code more portable, between web frameworks (such as Express or Koa) or Serverless model with cloud functions. We believe in the Hexagonal architecture where your core business logic should be loosely-coupled with the presentation interface and the underlying services.

Example

Install Hexagon via NPM

$ npm install @nedvisol/hexagon-core @nedvisol/hexagon-adapter-express

Write your first controller by creating a plain-old Typescript class and annotate

// index.ts
import { RestController, RestGetMapping, RestPathParam } from '@nedvisol/hexagon-core';
@RestController()
export class UserController {  
 
  @RestGetMapping('/users/:id')
  getUser (@RestPathParam('id') id: string): IUser {
    return { id, name: 'test' };
  }
}

Then apply to your favorite web/API server

// index.ts (cont..)
import { initializeExpressApp } from '@nedvisol/hexagon-adapter-express';

const app = express();
app.use(bodyParser.text());
initializeExpressApp(app);

app.listen(3000, () => {
  console.log('listening on port 3000!');
});

Start the server

$ ts-node index.ts

In a different terminal

$ curl -v http://localhost:3000/users/id-001

You should see a response:

{"id": "id-001", "name": "test"}