Injection

Injection is a powerful inversion of control container that is widely used in the midway framework and brings good user experience.

Installation

$ npm install injection reflect-metadata --save

Node.js >= 10.0.0 required.

Injection requires TypeScript >= 2.0 and the experimentalDecorators, emitDecoratorMetadata, types and lib compilation options in your tsconfig.json file.

{
  "compilerOptions": {
    "target": "ES2018",
    "module": "commonjs",
    "moduleResolution": "node",
    "experimentalDecorators": true,
    "emitDecoratorMetadata": true,
    "inlineSourceMap":true,
    "noImplicitThis": true,
    "noUnusedLocals": true,
    "stripInternal": true,
    "pretty": true,
    "declaration": true,
    "outDir": "dist",
    "lib": ["ES2018", "dom"]
  }
}

Getting Started

import {Container, provide, inject} from 'injection';

@provide('userModel')
class UserModel {

}

@provide('userService')
class UserService {
  
  @inject()
  private userModel;
  
  async getUser(uid) {
    // TODO
    return 'Alex';
  }
}


const container = new Container();
container.bind(UserService);
container.bind(UserModel);

async function getData() {
  const userService = await container.getAsync<UserService>('userService'); 
  const data = await userService.getUser(123);
  return data;
}

getData().then(console.log);
// Alex

Document: https://midwayjs.org/injection/guide.html

License

MIT

Current Tags

1.8.4 ... beta (5 years ago)
1.8.6 ... latest (5 years ago)
1.7.6 ... next (5 years ago)

Injection

Installation

Getting Started

License

Current Tags

73 Versions