neos-container

Service Container README

Overview

The Service Container is a comprehensive TypeScript/JavaScript module designed to manage and maintain services in a structured and efficient manner. It provides functionalities such as service registration, resolution, disposal, and automatic loading of services from a specified directory. The module is built to be versatile, handling both class-based and functional services, with support for lazy loading, custom initialization, and disposal.

Features

• Service Registration: Dynamically register services with unique names.
• Service Resolution: Resolve and retrieve registered services as needed.
• Service Disposal: Dispose of services individually or collectively.
• Automatic Service Loading: Automatically load services from a specified directory.
• Lazy Loading: Option to lazily load services to optimize performance.
• Custom Initializers and Disposers: Execute custom logic during service initialization or disposal.
• Logging and Error Handling: Built-in logging capabilities and robust error handling.
• Typed Services: Specify what each of your services will resolve as.

Installation

npm/bun/yarn install @neos/container

Usage

Importing Container

import { Container } from "@neos/container";

Creating a Container Instance

const container = new Container(options);

Registering Services

While the register method takes an array and registers each item... its not recommended to register to many things in a row. Instead use the auto-load feature.

await container.register([
  {
    name: "ServiceName",
    service: ServiceClass,
    options: {
      /* ... */
    },
  },
]);

Resolving Services

await container.resolve("ServiceName").then((serviceInstance) => {
  // Use serviceInstance
});

Disposing Services

await container.dispose("ServiceName");

Auto-Loading Services

// index.ts
container.autoLoad("/path/to/services");

// someServiceFile.ts
export {
  name: "someName",
  service: someService,
  options: {
    logging: (container, options) => {
      console.log(`Loaded: ${options.name}`);
    },
  },
} as AutoLoadServiceOptions;

Typing Services

// services.d.ts
import '@neos/container';

declare module "@neos/container" {
  interface ServiceMap {
    // Services here:
    ServiceName: ServiceType;
  }
}