Typescript 简单应用程序在 sequelize.addModels 后停止且没有错误答案

【问题标题】：Typescript simple application stops with no error after sequelize.addModelsTypescript 简单应用程序在 sequelize.addModels 后停止且没有错误
【发布时间】：2022-08-17 07:27:09
【问题描述】：

我是 Typescript 的新人，而 Sequelize 是 100% 的新人。我只在 .config/config 文件中做了与 postgres 配置相关的更改，只是为了添加 dev db 配置，如下所示：

export const config = {
  \"dev\": {
    \"username\": \"postgres\",
    \"password\": \"postgres\",
    \"database\": \"baseDB\",
    \"host\": \"localhost\",
    \"dialect\": \"postgres\"
  },
  ...
}

数据库在我的本地 PC 上的 docker 容器上运行，我已连接到容器，并且可以使用连接到容器的 DataGrip 导航数据库，这意味着数据库配置是正确的。

查看我的配置：

包.json 文件

{
  \"name\": \"sample-restapi\",
  \"version\": \"1.0.0\",
  \"description\": \"\",
  \"main\": \"server.js\",
  \"scripts\": {
    \"start\": \"node server.js\",
    \"tsc\": \"tsc\",
    \"dev\": \"ts-node-dev ./src/server.ts\",
    \"prod\": \"tsc && node ./www/server.js\",
    \"clean\": \"rimraf www/ || true\",
    \"build\": \"npm run clean && tsc && cp -rf src/config www/config && cp .npmrc www/.npmrc && cp package.json www/package.json && cd www && zip -r Archive.zip . && cd ..\",
    \"test\": \"echo \\\"Error: no test specified\\\" && exit 1\"
  },
  \"keywords\": [],
  \"author\": \"Name here\",
  \"license\": \"\",
  \"dependencies\": {
    \"@types/bcrypt\": \"^3.0.0\",
    \"@types/jsonwebtoken\": \"^8.3.2\",
    \"aws-sdk\": \"^2.492.0\",
    \"bcrypt\": \"^5.0.0\",
    \"body-parser\": \"^1.19.0\",
    \"email-validator\": \"^2.0.4\",
    \"express\": \"^4.17.1\",
    \"jsonwebtoken\": \"^8.5.1\",
    \"pg\": \"^7.11.0\",
    \"pg-hstore\": \"^2.3.4\",
    \"reflect-metadata\": \"^0.1.13\",
    \"sequelize\": \"^5.10.0\",
    \"sequelize-typescript\": \"^0.6.11\"
  },
  \"devDependencies\": {
    \"@types/bluebird\": \"^3.5.33\",
    \"@types/express\": \"^4.17.9\",
    \"@types/node\": \"^11.15.42\",
    \"@types/sequelize\": \"^4.28.9\",
    \"@types/validator\": \"^10.11.3\",
    \"chai\": \"^4.2.0\",
    \"chai-http\": \"^4.3.0\",
    \"mocha\": \"^6.2.3\",
    \"rimraf\": \"^3.0.2\",
    \"ts-node-dev\": \"^1.1.1\",
    \"tslint\": \"^5.20.1\",
    \"typescript\": \"^3.9.7\"
  }
}

配置文件

export const config = {
  \"dev\": {
    \"username\": \"postgres\",
    \"password\": \"postgres\",
    \"database\": \"baseDB\",
    \"host\": \"localhost\",
    \"dialect\": \"postgres\",
    \"aws_region\": \"us-east-2\",
    \"aws_profile\": \"default\",
    \"aws_media_bucket\": \"udagram-ruttner-dev\"
  },
  \"jwt\": {
    \"secret\": \" \"
  },
  \"prod\": {
    \"username\": \"\",
    \"password\": \"\",
    \"database\": \"udagram_prod\",
    \"host\": \"\",
    \"dialect\": \"postgres\"
  }
}

续集配置

import {Sequelize} from \'sequelize-typescript\';
import { config } from \'./config/config\';


const c = config.dev;

// Instantiate new Sequelize instance!
export const sequelize = new Sequelize({
  \"username\": c.username,
  \"password\": c.password,
  \"database\": c.database,
  \"host\":     c.host,

  dialect: \'postgres\',
  storage: \':memory:\',
});

服务器.ts

import express from \'express\';
import { sequelize } from \'./sequelize\';

import { IndexRouter } from \'./controllers/v0/index.router\';

import bodyParser from \'body-parser\';

import { V0MODELS } from \'./controllers/v0/model.index\';

(async () => {
 
  await sequelize.addModels(V0MODELS);
  
 /*THE APPLICATION STOP IN THIS LINE*/
  await sequelize.sync();
  /*NOTHING BELOW IS EXECUTED AND NO ERROR LOGGED EVEN ADDING A TRY CATCH 
    THERE ARE NO ERRORS*/

  const app = express();
  const port = process.env.PORT || 8080; // default port to listen
  
  app.use(bodyParser.json());
  app.use(\'/api/v0/\', IndexRouter)

  // Root URI call
  app.get( \"/\", async ( req, res ) => {
    res.send( \"/api/v0/\" );
  } );
  

  // Start the Server
  app.listen( port, () => {
      console.log( `server running http://localhost:${ port }` );
      console.log( `press CTRL+C to stop server` );
  } );
})();

V0模型定义

import { FeedItem } from \'./feed/models/FeedItem\';
import { User } from \'./users/models/User\';

export const V0MODELS = [ FeedItem, User ];

每次我尝试运行npm run dev 我没有错误，什么都没有，应用程序在此行之后停止，没有执行任何其他操作

await sequelize.sync();
我正在使用节点版本：v16.14.0，npm 版本：8.3.1

我究竟做错了什么？注意：您可以假设 npm i 是我运行的第一件事。

控制台输出：

PS path\\simple-restapi> npm run dev

> udacity-c2-restapi@1.0.0 dev
> ts-node-dev ./src/server.ts

[INFO] 12:56:52 ts-node-dev ver. 1.1.1 (using ts-node ver. 9.1.1, typescript ver. 3.9.7)
sequelize config:  {
  dialect: \'postgres\',
  dialectModule: null,
  dialectModulePath: null,
  host: \'localhost\',
  protocol: \'tcp\',
  define: { timestamps: false, freezeTableName: true },
  query: {},
  sync: {},
  timezone: \'+00:00\',
  clientMinMessages: \'warning\',
  standardConformingStrings: true,
  logging: [Function: log],
  omitNull: false,
  native: false,
  replication: false,
  ssl: undefined,
  pool: {},
  quoteIdentifiers: true,
  hooks: {},
  retry: { max: 5, match: [ \'SQLITE_BUSY: database is locked\' ] },
  transactionType: \'DEFERRED\',
  isolationLevel: null,
  databaseVersion: 0,
  typeValidation: false,
  benchmark: false,
  minifyAliases: false,
  logQueryParameters: false,
  username: \'postgres\',
  password: \'postgres\',
  database: \'baseDB\',
  storage: \':memory:\'
}
sequelize: Attempting to add models to sequelize...
sequelize: Models added to sequelize!!!
sequelize: Attempting to sync...
PS path\\simple-restapi>

不知何故正在加载 postgres 配置，但它看起来指向 SQLite，我该如何避免这种情况？

标签： node.js typescript sequelize.js sequelize-typescript

【解决方案1】：

从您的问题来看，您似乎在 Udacity ALX-cloud 开发人员计划中。所以这里的快速解决方案是将你的节点版本降级到 12.0，这个问题并不少见。您可以使用 NVM 安装节点版本 12.0，然后您可以运行您的 npm run dev 命令，它现在应该可以按预期工作。您可以使用此link 来指导您安装 NVM 并使用 NVM 安装新版本的 Node。祝你的节目好运。

【讨论】：