SyntaxError:意外的令牌导入typeORM实体

Question

所以,我正在使用typeORM,当我将TypeScript转换为JavaScript时,我遇到了一个奇怪的错误.我收到以下错误:

(function (exports, require, module, __filename, __dirname) { import { Entity, PrimaryGeneratedColumn, ManyToOne, OneToMany, TreeChildren, TreeParent, JoinColumn, Column, Tree, TreeLevelColumn } from "typeorm";
                                                              ^^^^^^

SyntaxError: Unexpected token import
at createScript (vm.js:80:10)
at Object.runInThisContext (vm.js:139:10)
at Module._compile (module.js:616:28)
at Object.Module._extensions..js (module.js:663:10)
at Module.load (module.js:565:32)
at tryModuleLoad (module.js:505:12)
at Function.Module._load (module.js:497:3)
at Module.require (module.js:596:17)
at require (internal/module.js:11:18)
at Function.PlatformTools.load (C:\Users\*redacted*\Workspace\experimental\*redacted*\node_modules\typeorm\platform\PlatformTools.js:126:28)

我的tsconfig.json:

{
    "compilerOptions": {
        "lib": [
           "es5",
           "es6"
        ],
        "target": "es5",
        "module": "commonjs",
        "moduleResolution": "node",
        "outDir": "./build",
        "emitDecoratorMetadata": true,
        "experimentalDecorators": true,
        "sourceMap": true
     },
    "exclude": [
        "client"
    ]
}

我的package.json:

{
   "name": "*redacted*",
   "version": "1.0.0",
   "description": "",
   "main": "index.js",
   "scripts": {
      "test": "echo \"Error: no test specified\" && exit 1",
      "dev": "nodemon --watch 'src/**/*.ts' --ignore 'src/**/*.spec.ts' --exec ts-node src/index.ts",
      "start": "tsc && node ./build/index.js",
      "migrate": "ts-node ./node_modules/typeorm/cli.js migration:generate"
   },
   "author": "*redacted*",
   "license": "ISC",
   "dependencies": {
      "bcryptjs": "^2.4.3",
      "body-parser": "^1.18.3",
      "class-validator": "^0.8.5",
      "express": "^4.16.3",
      "jwt-simple": "^0.5.1",
      "morgan": "^1.9.0",
      "pg": "^7.4.3",
      "reflect-metadata": "^0.1.10",
      "typeorm": "0.2.5"
   },
   "devDependencies": {
      "@types/bcryptjs": "^2.4.1",
      "@types/body-parser": "^1.17.0",
      "@types/express": "^4.11.1",
      "@types/jwt-simple": "^0.5.33",
      "@types/node": "^8.10.15",
      "ts-node": "3.3.0",
      "typescript": "2.5.2"
   }
}

抛出错误的文件:

import { Entity, PrimaryGeneratedColumn, ManyToOne, OneToMany, TreeChildren, TreeParent, JoinColumn, Column, Tree, TreeLevelColumn } from "typeorm";
import { User } from "./User";
import { Debate } from "./Debate";


@Entity()
@Tree("closure-table")
export class Comment {

    @PrimaryGeneratedColumn("uuid")
    id: string;

    @Column()
    text: string;

    @ManyToOne(type => User)
    user: User;

    @ManyToOne(type => Debate, debate => debate.comments)
    debate: Debate;

    @TreeChildren()
    children: Comment[];

    @TreeParent()
    parent: Comment;
}

我尝试过的:

• 我尝试将node.js更新到最新版本(版本8.11.2)
• 我尝试在"es5","es6"和"es7"的各种组合中更改tsconfig.json中的"lib"设置
• 我已经尝试将tsconfig.json的"target"更改为上面项目符号点中列出的目标.
• 我尝试将实体文件中的import语句从"import(lib)from(module)"更改为"const(lib)require(module)"; 但是,这会导致更多问题并且无法正常工作.

我一直在谷歌搜索这个问题,这让我摸不着头脑.任何和所有的帮助将不胜感激.

Answer 1

好吧,我只是愚蠢.

因此,ormconfig.json将您的实体指向/ src文件夹中的ts文件.在构建项目时,它应指向您的实体所在的位置.我确实认为在构建之后尝试引用TS文件是奇怪的.

ormconfig.json

{
   "type": "postgres",
   "host": "**********************",
   "port": 5432,
   "username": "**************",
   "password": "*************",
   "database": "*************",
   "synchronize": true,
   "logging": false,
   "entities": [
      // changed this

      "dist/entity/*.js"
   ],
   "migrations": [
      "src/migration/**/*.ts"
   ],
   "subscribers": [
      "src/subscriber/**/*.ts"
   ],
   "cli": {
      "entitiesDir": "src/entity",
      "migrationsDir": "src/migration",
      "subscribersDir": "src/subscriber"
   }
}

Answer 2

您还可以使用ts-node运行 typeorm，这将允许您运行ts文件，并允许您避免编译和运行单独的js文件。

根据此 github 评论，您可以执行以下操作：

1.- 全局安装 ts-node 和 typescript：

$ npm install -g ts-node typescript

2.- 使用 ts-node 执行 typeorm 命令：

$ ts-node ./node_modules/.bin/typeorm migrations:generate -n

如果你在windows上，你会遇到问题。根据此评论，您需要直接引用cli.js：

ts-node node_modules\typeorm\cli.js