node.js - 无法在位置 #0 注入(inject)依赖项，因为 TypeInfo 未知

Question

我遇到了这个问题:

[ERROR] 14:07:18 Error: Cannot inject the dependency at position #0 of "ListInterviewPagesUseCase" constructor. Reason: TypeInfo not known for "InterviewPagesRepository"

容器

import { container } from "tsyringe";

import { InterviewPagesRepository } from "../../modules/interview/repositories/implementations/InterviewPagesRepository";

import "./providers";

container.registerSingleton(
  "InterviewPagesRepository",
  InterviewPagesRepository
);

Controller

import { Request, Response } from "express";
import { container } from "tsyringe";

import { ListInterviewPagesUseCase } from "./ListInterviewPagesUseCase";

class ListInterviewPagesController {
  async handle(request: Request, response: Response): Promise<Response> {
    const listInterviewPagesUseCase = container.resolve(
      ListInterviewPagesUseCase
    );

    const interviewPages = await listInterviewPagesUseCase.execute();

    return response.json(interviewPages);
  }
}

export { ListInterviewPagesController };

用例

import { inject, injectable } from "tsyringe";

import { InterviewPage } from "../../entities/InterviewPage";
import { IInterviewPagesRepository } from "../../repositories/IInterviewPagesRepository";

@injectable()
class ListInterviewPagesUseCase {
  constructor(
    @inject("InterviewPagesRepository")
    private interviewPagesRepository: IInterviewPagesRepository
  ) {}

  async execute(): Promise<InterviewPage[]> {
    const interviewPages = await this.interviewPagesRepository.all();

    return interviewPages;
  }
}

export { ListInterviewPagesUseCase };

在windows上是正常的，现在换成mac就不行了。我已经从 tsrynge 中设置了 delay 但仍然不起作用。

当我调用使用此存储库的路由时会发生这种情况，但看起来没问题，数据库已创建。

我在应用文件中导入:

import "reflect-metadata";
import "dotenv/config";
import "./database";
import "./shared/container";

import cors from "cors";
import express from "express";
import swaggerUi from "swagger-ui-express";

import { router } from "./routes";
import swaggerFile from "./swagger.json";

Answer 1

考虑用@singleton装饰InterviewPagesRepository，而不是自己调用container.registerSingleton:

import { singleton } from "tsyringe";

@singleton()
class InterviewPagesRepository {

@singleton 装饰器 does invoke registerSingleton() inside ，就像你做的那样，但它也存储它以用于其他构造函数的参数(参见 1 → 2 ，然后是 3 → 4 → 5 )。