如何使用类型记录中的sigleton()在构造函数中传递值？

Question

对于如何使用类型记录中的单例类在构造函数中传递值，我有疑问。

mycode .ts

import {singleton} from "tsyringe";

@singleton()
class Foo {
  constructor(data:string) 
{
this.data = data
}
}

// some other file
import "reflect-metadata";
import {container} from "tsyringe";
import {Foo} from "./foo";

const instance = container.resolve(Foo);

如何使用constainer .resolve函数.any在构造函数中传递值，给出了示例代码如何传递该值。

Answer 1

您可以执行以下操作将值注入构造函数：

import {singleton} from "tsyringe";

@singleton()
class Foo {
  private str: string;
  constructor(@inject("SomeName") value: string) {
    this.str = value;
  }
}

// some other file
import "reflect-metadata";
import {container} from "tsyringe";
import {Foo} from "./foo";

const str = "test";

container.register("SomeName", { useValue: str });
const instance = container.resolve(Foo);

Answer 2

@ answer 1762087回答您的问题，如果您想为每个实例的构造函数提供不同的参数，您可以这样做

import "reflect-metadata";
import {container} from "tsyringe";
import {Foo} from "./foo";

const str = "test";

container.registerInstance("SomeName", { useValue: str });
const instance = container.resolve(Foo);

// to clear up instances you've registered with registerInstance()
container.clearInstances();