inversify 强大&&轻量级的基于typescript 的ioc 框架

{

    "compilerOptions": {

        "target": "es5",

        "lib": ["es6"],

        "types": ["reflect-metadata"],

        "module": "commonjs",

        "moduleResolution": "node",

        "experimentalDecorators": true,

        "emitDecoratorMetadata": true

    }

}

// file interfaces.ts

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export interface Warrior {

    fight(): string;

    sneak(): string;

}

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export interface Weapon {

    hit(): string;

}

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export interface ThrowableWeapon {

    throw(): string;

}

// file types.ts

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const TYPES = {

    Warrior: Symbol.for("Warrior"),

    Weapon: Symbol.for("Weapon"),

    ThrowableWeapon: Symbol.for("ThrowableWeapon")

};

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export { TYPES };

// file entities.ts

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import { injectable, inject } from "inversify";

import "reflect-metadata";

import { Weapon, ThrowableWeapon, Warrior } from "./interfaces";

import { TYPES } from "./types";

?

@injectable()

class Katana implements Weapon {

    public hit() {

        return "cut!";

    }

}

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@injectable()

class Shuriken implements ThrowableWeapon {

    public throw() {

        return "hit!";

    }

}

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@injectable()

class Ninja implements Warrior {

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    private _katana: Weapon;

    private _shuriken: ThrowableWeapon;

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    public constructor(

      @inject(TYPES.Weapon) katana: Weapon,

      @inject(TYPES.ThrowableWeapon) shuriken: ThrowableWeapon

    ) {

        this._katana = katana;

        this._shuriken = shuriken;

    }

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    public fight() { return this._katana.hit(); }

    public sneak() { return this._shuriken.throw(); }

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}

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export { Ninja, Katana, Shuriken };

// file inversify.config.ts

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import { Container } from "inversify";

import { TYPES } from "./types";

import { Warrior, Weapon, ThrowableWeapon } from "./interfaces";

import { Ninja, Katana, Shuriken } from "./entities";

?

const myContainer = new Container();

myContainer.bind<Warrior>(TYPES.Warrior).to(Ninja);

myContainer.bind<Weapon>(TYPES.Weapon).to(Katana);

myContainer.bind<ThrowableWeapon>(TYPES.ThrowableWeapon).to(Shuriken);

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export { myContainer };

import { myContainer } from "./inversify.config";

import { TYPES } from "./types";

import { Warrior } from "./interfaces";

const ninja = myContainer.get<Warrior>(TYPES.Warrior);

console.log(ninja.fight()); 

console.log(ninja.sneak())