“不能在模块外使用导入语句"在运行 nestjs 应用程序时在 typeorm 迁移中 [英] "Cannot use import statement outside a module" in typeorm migration when run nestjs app

问题描述

我已经创建了 nestjs 应用程序.在根应用程序文件夹中，我有以下子文件夹:

I have created the nestjs app. In the root app folder I have these subfolders:

• 分布
• 迁移
• 源代码
• 测试

迁移文件夹包含 typeorm 迁移.
使用 npm run start:dev 运行应用程序时出现此错误:

The migration folder contains typeorm migrations.
When run application with npm run start:dev I have this error:

import {MigrationInterface, QueryRunner} from "typeorm";
^^^^^^

SyntaxError: Cannot use import statement outside a module
    at Module._compile (internal/modules/cjs/loader.js:891:18)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:991:10)
    at Module.load (internal/modules/cjs/loader.js:811:32)
    at Function.Module._load (internal/modules/cjs/loader.js:723:14)
    at Module.require (internal/modules/cjs/loader.js:848:19)
    at require (internal/modules/cjs/helpers.js:74:18)
    at Function.PlatformTools.load (C:\Users\dakru1\Documents\employo\employo-api\node_modules\typeorm\platform\PlatformTools.js:114:28)
    at C:\Users\dakru1\Documents\employo\employo-api\node_modules\typeorm\util\DirectoryExportedClassesLoader.js:39:69
    at Array.map (<anonymous>)
    at Object.importClassesFromDirectories (C:\Users\dakru1\Documents\employo\employo-api\node_modules\typeorm\util\DirectoryExportedClassesLoader.js:39:10)

我了解错误消息，并且知道如何解决与应用程序代码相关的问题.

I understand the error message and I know how to fix it when it relates to application's code.

但是，我的问题是这个错误来自 typeorm 迁移文件:[app-root-folder]\migration\1587067680466-Init.ts 应用程序运行时不应使用.

However, my problem is that this error come from typeorm migration file: [app-root-folder]\migration\1587067680466-Init.ts which shouldn't be used when application runs.

为什么 nestjs 使用迁移文件.运行 nestjs 应用程序时如何忽略迁移文件夹?

Why nestjs uses migration files. How can I ignore migration folder when running nestjs app?

推荐答案

要解决它，只需将以下代码放在您的脚本"中即可在 package.json:

to solve it just put the following code on your "scripts" at package.json:

"typeorm": "ts-node-dev ./node_modules/typeorm/cli.js",

之后，您就可以运行 typeorm 迁移:运行 :)

After that you'll be able to run your typeorm migration:run :)

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