App

The App class is the main entry point for any NodeArch application. It provides the foundation for configuring your app, loading components, and integrating extensions. Below is an example of how to define your own app by extending the App class and configuring its options.

Example

import { App } from '@nodearch/core';
import { ExpressApp } from '@nodearch/express';


export default class MyApp extends App {
  constructor() {
    super({
      components: {
        url: new URL('components', import.meta.url)
      },
      extensions: [
        new ExpressApp()
      ],
      logs: {
        prefix: 'MyApp'
      }
    });
  }
}

App Options

The App constructor accepts an options object to configure your application. Here are the main options:

components

• url: The directory to scan for components (controllers, services, etc.).
• scope (optional): The default component scope (e.g., ComponentScope.SINGLETON).
• classes, depth, include, exclude: Advanced options for class loading.

extensions

• An array of other App instances (extensions) to load and integrate into your app. Extensions can add features such as HTTP servers, validation, OpenAPI, Swagger UI, testing, and more.

logs

• prefix: Prefix for log messages.
• logger, logLevel, getTimestamp, disable, disableColors: Advanced logging options.

config

• Any custom configuration object to be made available to your app and its components.

Summary

• Extend the App class to define your application.
• Configure components, extensions, logging, and custom config in the constructor.
• Use extensions to add features and integrate with other NodeArch modules.
• The App class is the foundation for building modular, extensible NodeArch applications.