我正在尝试学习制作一个 Web 应用程序，并尝试遵循 AWS 提供的教程，但在制作 Lambda 函数时遇到了这个问题。

{
  "errorType": "ReferenceError",
  "errorMessage": "exports is not defined in ES module scope",
  "trace": [
    "ReferenceError: exports is not defined in ES module scope",
    "    at file:///var/task/index.mjs:3:1",
    "    at ModuleJob.run (node:internal/modules/esm/module_job:193:25)",
    "    at async Promise.all (index 0)",
    "    at async ESMLoader.import (node:internal/modules/esm/loader:530:24)",
    "    at async _tryAwaitImport (file:///var/runtime/index.mjs:921:16)",
    "    at async _tryRequire (file:///var/runtime/index.mjs:970:86)",
    "    at async _loadUserApp (file:///var/runtime/index.mjs:994:16)",
    "    at async UserFunction.js.module.exports.load (file:///var/runtime/index.mjs:1035:21)",
    "    at async start (file:///var/runtime/index.mjs:1200:23)",
    "    at async file:///var/runtime/index.mjs:1206:1"
  ]
}

index.mjs

// Define handler function, the entry point to our code for the Lambda service

// We receive the object that triggers the function as a parameter
exports.handler = async (event) => {
    // Extract values from event and format as strings
    let name = JSON.stringify(`Hello from Lambda, ${event.firstName} ${event.lastName}`);
    // Create a JSON object with our response and store it in a constant
    const response = {
        statusCode: 200,
        body: name
    };
    // Return the response constant
    return response;
};

JSON { "firstName":"Tyler", "lastName":"Schnitzer"

它应该是一个简单的 hello world，但我很困惑为什么我无法让事件正常工作？

我希望有人能帮助解释这个错误以及如何解决它，我尝试查看 AWS Lambda 故障排除页面，但我仍然不明白。