Package Exports

ecmascript-ioc
ecmascript-ioc/dist/index.js

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (ecmascript-ioc) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

ecmascript-ioc

An IoC library mirroring Java Spring Framework's implementation.

Features

Annotations: Use decorators like @component, @repository, @service, @controller, and @autowired.
Dependency Injection: Automatic dependency resolution and injection with circular dependencies handling and lazy initializations.
TypeScript 5.0 Decorators: Uses the new ECMAScript decorators without reflect-metadata.

Installation

npm install ecmascript-ioc

Usage guide

import { autowired, component, service, repository, postConstruct } from 'ecmascript-ioc';

@component("ReportGenerator", { lazy: true })
class ReportGenerator {
  public generateTaxReport(username: string): void {
    console.log(`Prepare tax report for user: ${username}.`);
  }
}

@repository("UsersRepository")
class UsersRepository {
  public get(): string {
    return "username";
  }

  public save(username: string): void {
    console.log(`Persist user: ${username}.`);
  }

  @postConstruct
  private warmUpCache(): void {
    console.log('Fetching data from DataBase...');
  }
}

@service("UsersService")
class UsersService {
  @autowired("UsersRepository")
  private repository!: UsersRepository;

  @autowired("ReportGenerator")
  private reportGenerator!: ReportGenerator;

  public getUser(): string {
    return this.repository.get();
  }

  public createUser(username: string): void {
    this.repository.save(username);
  }

  private generateTaxReport(username: string): void {
    this.reportGenerator.generateTaxReport(username);
  }
}