运行OpenAI GPT的nodemon服务器遇ERR_MODULE_NOT_FOUND错误求助

执行npm run server启动基于OpenAI GPT的nodemon服务器时，终端返回ERR_MODULE_NOT_FOUND错误，同时显示[nodemon] app crashed - waiting for file changes before starting...。项目相关文件如下：

package.json文件 #

{
  "name": "server",
  "version": "1.0.0",
  "description": "",
  "main": "server.js",
  "type": "module",
  "scripts": {
    "server": "nodemon server"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "cors": "^2.8.5",
    "dotenv": "^16.0.3",
    "nodemon": "^2.0.20",
    "openai": "^3.1.0"
  }
}

server.js文件 #

import express from 'express';
import * as dotenv from 'dotenv';
import cors from 'cors';
import { Configuration, OpenAIApi } from 'openai';

dotenv.config();
const configuration = new Configuration({
    apiKey: process.env.OPENAI_API_KEY,
});

const openai = new OpenAIApi(configuration);
const app = express();
app.use((cors()));
app.use(express.json());

app.get('/', async (req, res) => {
    res.status(200).send({
        message: 'Hello form Codex',
    })
});

app.post('/', async (req, res) => {
    try {
        const prompt = req.body.prompt; //front end

        const response = await openai.createCompletion({
            model: "text-davinci-003",
            prompt: `${prompt}`,
            temperature: 0,
            max_tokens: 3000,
            top_p: 1,
            frequency_penalty: 0.5,
            presence_penalty: 0,
        });
        res.status(200).send({
            bot: response.data.choices[0].text
        })
    } catch (error) {
        console.log(error);
        res.status(500).send({ error })
    }
})

app.listen(5000, ()=> console.log('Server is running on port http://localhost:5000'));

终端错误信息 #

code: 'ERR_MODULE_NOT_FOUND'
}

Node.js v18.12.1
[nodemon] app crashed - waiting for file changes before starting...

解决步骤 #

• 安装缺失的依赖包：server.js中导入了express，但package.json的依赖列表里没有该包，这是模块找不到的核心原因。执行命令安装：

  npm install express
  

• 修复语法错误：server.js第10行app.use((cors()));多了一对冗余括号，修改为：

  app.use(cors());
  

• 验证启动命令（可选）：若nodemon无法识别server指向server.js，可将package.json的scripts字段修改为：

  "scripts": {
    "server": "nodemon server.js"
  }
  

• 配置环境变量（后续运行必备）：在项目根目录创建.env文件，添加OpenAI密钥：

  OPENAI_API_KEY=你的OpenAI API密钥
  

完成以上操作后，重新执行npm run server即可正常启动服务器。

内容的提问来源于stack exchange，提问作者Anand Srivastava