Question

我正在尝试将Nest-class v7包与NestJS v7一起使用。 class-transformer软件包与npm i class-transformer --save一起安装。我已按照readme.md

的指示进行操作

该软件包确实有一个打字稿定义，我可以在我的文件系统上（在node_modules内的正确目录中）看到它，VS Code可以很好地导航到该定义，所以我完全困惑为什么它不起作用。我试图删除我的node_modules目录，清除我的NPM缓存，然后再次使用npm install重新安装所有内容。

当我尝试编译时，我只会得到Cannot find module 'class-transformer' or its corresponding type declarations.

我的实体代码：

import {
    Column,
    Entity,
    Index,
    OneToMany,
    PrimaryGeneratedColumn,
} from "typeorm";
import { Expose } from 'class-transformer';

@Entity("country", { schema: "my_schema" })
export class Country {
    @PrimaryGeneratedColumn({ type: "int", name: "id" })
    id: number;

    // Some properties here

    @Expose()
    get name(): string {
        return this.someProperty.content;
    }
    ...
}

我的tsconfig.json：

{
  "compilerOptions": {
    "target": "es2017",
    "module": "commonjs",
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "sourceMap": false,
    "outDir": "./dist",
  }
}

我的package.js：

{
  "name": "project-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 0.0.0.0:9229 --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": "^7.4.2",
    "@nestjs/config": "^0.5.0",
    "@nestjs/core": "^7.0.0",
    "@nestjs/platform-express": "^7.0.0",
    "@nestjs/typeorm": "^7.1.0",
    "class-transformer": "^0.3.1",
    "mysql": "^2.18.1",
    "rimraf": "^3.0.2",
    "rxjs": "^6.5.4",
    "typeorm": "^0.2.25"
  },
  "devDependencies": {
    "@nestjs/cli": "^7.0.0",
    "@nestjs/schematics": "^7.0.0",
    "@nestjs/testing": "^7.0.0",
    "@types/express": "^4.17.3",
    "@types/jest": "25.2.3",
    "@types/node": "^13.9.1",
    "@types/supertest": "^2.0.8",
    "@typescript-eslint/eslint-plugin": "3.0.2",
    "@typescript-eslint/parser": "3.0.2",
    "eslint": "7.2.0",
    "eslint-config-prettier": "^6.10.0",
    "eslint-plugin-import": "^2.20.1",
    "jest": "26.0.1",
    "prettier": "^1.19.1",
    "supertest": "^4.0.2",
    "ts-jest": "26.1.0",
    "ts-loader": "^6.2.1",
    "ts-node": "^8.6.2",
    "tsconfig-paths": "^3.9.0",
    "typescript": "^3.7.4"
  },
  "jest": {
    "moduleFileExtensions": [
      "js",
      "json",
      "ts"
    ],
    "rootDir": "src",
    "testRegex": ".spec.ts$",
    "transform": {
      "^.+\\.(t|j)s$": "ts-jest"
    },
    "coverageDirectory": "../coverage",
    "testEnvironment": "node"
  }
}

我花了两个令人沮丧的时间试图弄清为什么会这样。这是我遇到过此类问题的唯一软件包，并且查看我的配置，软件包本身以及其他所有内容，对我来说毫无意义。

找不到模块“ class-transformer”或其相应的类型声明

0 个答案: