Cheeket Injector


a decorator-based injector plugin for cheeket

``typescript
interface Weapon {
hit(): string;
}

@injectable()
class Katana implements Weapon {
hit(): string {
return "cut!";
}
}

interface ThrowableWeapon {
throw(): string;
}

@injectable()
class Shuriken implements ThrowableWeapon {
throw(): string {
return "hit!";
}
}

interface Warrior {
fight(): string;
sneak(): string;
}

@injectable()
class Ninja implements Warrior {
public constructor(
@inject(Types.Weapon) private katana: Weapon,
@inject(Types.ThrowableWeapon) private shuriken: ThrowableWeapon
) {}

fight(): string {
return this.katana.hit();
}

sneak(): string {
return this.shuriken.throw();
}
}

const container = new Container();

container.bind(Types.Weapon, autoInjected(Katana));
container.bind(Types.ThrowableWeapon, autoInjected(Shuriken));
container.bind(Types.Warrior, autoInjected(Ninja));

const warrior = await container.resolve(Types.Warrior);
const throwableWeapon = await container.resolve(
Types.ThrowableWeapon
);
const weapon = await container.resolve(Types.Weapon);

expect(warrior.fight()).toEqual(weapon.hit());
expect(warrior.sneak()).toEqual(throwableWeapon.throw());
``