使用Npx mikro-orm迁移的Ben Awad vid教程问题：创建

问题描述

我正在逐步按照本教程进行操作，当我进入运行npx mikro-orm migration:create部分时，会出现此错误

TypeError [ERR_INVALID_ARG_TYPE]: The "key" argument must be of type string or an instance of Buffer,TypedArray,DataView,or KeyObject. Received null

    at prepareSecretKey (internal/crypto/keys.js:322:11)
    at new Hmac (internal/crypto/hash.js:113:9)
    at Object.createHmac (crypto.js:147:10)
    at createHMAC (C:\lireddit-server\node_modules\pg\lib\sasl.js:133:17)
    at Hi (C:\lireddit-server\node_modules\pg\lib\sasl.js:137:13)
    at Object.continueSession (C:\lireddit-server\node_modules\pg\lib\sasl.js:32:24)
    at Client._handleAuthSASLContinue (C:\lireddit-server\node_modules\pg\lib\client.js:248:10)
    at Connection.emit (events.js:314:20)
    at Connection.EventEmitter.emit (domain.js:483:12)
    at C:\lireddit-server\node_modules\pg\lib\connection.js:109:12
    at Parser.parse (C:\lireddit-server\node_modules\pg-protocol\src\parser.ts:102:9)
    at Socket.<anonymous> (C:\lireddit-server\node_modules\pg-protocol\src\index.ts:7:48)
    at Socket.emit (events.js:314:20)
    at Socket.EventEmitter.emit (domain.js:483:12)
    at addChunk (_stream_readable.js:298:12)
    at readableAddChunk (_stream_readable.js:273:9)```

I can't find any solution on google,and the tut doesn't point out how to login to postgresql on the app

解决方法

您缺少某些配置，很可能是user或password字段。这是相关问题：

https://github.com/mikro-orm/mikro-orm/issues/866

如果您不提供它们，则MikroORM将选择给定驱动程序的默认值，即postgres用户和空密码-您的postgres安装显然没有该用户的空密码。

如果您使用docker创建postgres服务器，则可以通过这种方式使其接受空的pws：

  postgre:
    image: postgres:12.4
    ports:
      - 5432:5432
    environment:
      POSTGRES_HOST_AUTH_METHOD: trust   <-- here

javascript mikro-orm postgresql