找不到模块'@nestjs/typeorm'

Question

我已经使用以下命令安装了 TypeORM：

Github repository

npm i --save @nestjs/typeorm typeorm

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found 0 vulnerabilities

但是当我想使用@nestjs/typeorm 时，它会显示“找不到模块”。

main.ts:

import 'dotenv/config';
import {Logger} from '@nestjs/common';
import {NestFactory} from '@nestjs/core';
import {AppModule} from './app.module';

import {TypeOrm} from '@nestjs/typeorm';

const port = process.env.PORT || 3000;

async function bootstrap() {
    const app = await NestFactory.create(AppModule);
    await app.listen(port);
    Logger.log(`server started on ${port}`, 'Bootstrap');

}

bootstrap();

错误：

error TS2307: Cannot find module '@nestjs/typeorm' or its corresponding type declarations.

这是我的“package.json”文件：

{
  "name": "---",
  "version": "0.0.1",
  "description": "",
  "author": "---",
  "private": true,
  "license": "UNLICENSED",
  "scripts": {
    "prebuild": "rimraf dist",
    "build": "nest build",
    "format": "prettier --write \"src/**/*.ts\" \"test/**/*.ts\"",
    "start": "nest start",
    "start:dev": "nest start --watch",
    "start:debug": "nest start --debug --watch",
    "start:prod": "node dist/main",
    "lint": "eslint \"{src,apps,libs,test}/**/*.ts\" --fix",
    "test": "jest",
    "test:watch": "jest --watch",
    "test:cov": "jest --coverage",
    "test:debug": "node --inspect-brk -r tsconfig-paths/register -r ts-node/register node_modules/.bin/jest --runInBand",
    "test:e2e": "jest --config ./test/jest-e2e.json"
  },
  "dependencies": {
    "@nestjs/common": "^8.0.0",
    "@nestjs/config": "^1.0.1",
    "@nestjs/core": "^8.0.0",
    "@nestjs/platform-express": "^8.0.0",
    "@nestjs/platform-socket.io": "^8.0.6",
    "@nestjs/typeorm": "^8.0.2",
    "dotenv": "^10.0.0",
    "g": "^2.0.1",
    "reflect-metadata": "^0.1.13",
    "rimraf": "^3.0.2",
    "rxjs": "^7.2.0",
    "typeorm": "^0.2.36"
  },
  "devDependencies": {
    "@nestjs/cli": "^8.0.0",
    "@nestjs/schematics": "^8.0.0",
    "@nestjs/testing": "^8.0.0",
    "@types/express": "^4.17.13",
    "@types/jest": "^26.0.24",
    "@types/node": "^16.0.0",
    "@types/supertest": "^2.0.11",

    ...
  },
  "jest": {
    "moduleFileExtensions": [
      "js",
      "json",
      "ts"
    ],
    "rootDir": "src",
    "testRegex": ".*\\.spec\\.ts$",
    "transform": {
      "^.+\\.(t|j)s$": "ts-jest"
    },
    "collectCoverageFrom": [
      "**/*.(t|j)s"
    ],
    "coverageDirectory": "../coverage",
    "testEnvironment": "node"
  }
}

我不确定Docker 导致发生此错误错误

Dockerfile:

FROM node:12.19.0-alpine3.9 AS development

WORKDIR /usr/src/app

COPY package*.json ./

RUN npm install glob rimraf

RUN npm install --only=development

COPY . .

RUN npm run build

FROM node:12.19.0-alpine3.9 as production

ARG NODE_ENV=production
ENV NODE_ENV=${NODE_ENV}

WORKDIR /usr/src/app

COPY package*.json ./

RUN npm install --only=production

COPY . .

COPY --from=development /usr/src/app/dist ./dist

CMD ["node", "dist/main"]

和docker-compose.yml:

version: '3.8'

services:
    dev:
        container_name: nestjs_api_dev
        image: nestjs-api-dev:1.0.0
        build:
            context: .
            target: development
            dockerfile: ./Dockerfile
        command: npm run start:debug
        ports:
            - 3000:3000
            - 9229:9229
        networks:
            - nesjs-network
        volumes:
            - .:/usr/src/app
            - /usr/src/app/node_modules
        restart: unless-stopped
    prod:
        container_name: nestjs_api_prod
        image: nestjs-api-prod:1.0.0
        build:
            context: .
            target: production
            dockerfile: ./Dockerfile
        command: npm run start:prod
        ports:
            - 3000:3000
            - 9229:9229
        networks:
            - nesjs-network
        volumes:
            - .:/usr/src/app
            - /usr/src/app/node_modules
        restart: unless-stopped

networks:
    nesjs-network:

Answer 1

在上述 Dockerfile 和 DolDurma 共享的示例中，在development 步骤中，仅安装了开发依赖项。这意味着，当 typescript 尝试查找诸如 @nestjs/typeorm、@nestjs/common 和 @nestjs/core 之类的内容以及运行构建和运行应用程序所需的任何其他包时，它不能，因此它会引发关于无法找到包或其类型声明。最简单的解决方案是在line 9 of the Dockerfile 上从RUN npm install --only=development 更改为RUN npm install。这将安装所有依赖项，并且 docker 容器将能够正确构建。然后docker compose up 将起作用（上面的实例将无法运行，因为它们都绑定到端口3000，但您可以使用docker compose up dev，应该没问题）

看起来 DolDurma 的示例仍然需要安装一些额外的依赖项，但容器确实构建并尝试从上述修改开始