“找不到从 /var/task/handlers/getAuction.js 导入的模块‘/var/task/lib/commonMiddleware’”，“code”：“ERR_MODULE_NOT_FOUND” - 无服务器节点

Question

当我调用端点时，出现以下错误：

 Streaming new logs for function: "placeBid"

 INIT_START Runtime - Version: nodejs:20.v42     Runtime Version ARN: arn:aws:lambda:sa-east-1::runtime:af2737389420ddcdbcdc4db3585842c334ad2482127c15295905f54a62feefc6

 2024-10-20 17:41:33.920 - undefined -

 ERROR   Uncaught Exception      {"errorType":"Error","errorMessage":"Cannot find module '/var/task/lib/commonMiddleware' imported from /var/task/handlers/getAuction.js","code":"ERR_MODULE_NOT_FOUND","url":"file:///var/task/lib/commonMiddleware","stack":\["Error \[ERR_MODULE_NOT_FOUND\]: Cannot find module '/var/task/lib/commonMiddleware' imported from /var/task/handlers/getAuction.js","    at finalizeResolution (node:internal/modules/esm/resolve:269:11)","    at moduleResolve (node:internal/modules/esm/resolve:937:10)","    at moduleResolveWithNodePath (node:internal/modules/esm/resolve:1173:14)","    at defaultResolve (node:internal/modules/esm/resolve:1216:79)","    at ModuleLoader.defaultResolve (node:internal/modules/esm/loader:540:12)","    at ModuleLoader.resolve (node:internal/modules/esm/loader:509:25)","    at ModuleLoader.getModuleJob (node:internal/modules/esm/loader:239:38)","    at ModuleWrap.\<anonymous\> (node:internal/modules/esm/module_job:96:40)","    at link (node:internal/modules/esm/module_job:95:36)"\]}

 INIT_REPORT Init Duration: 194.75 ms    Phase: init     Status: error  Error Type: Runtime.Unknown

 2024-10-20 17:41:34.689 - undefined -

 ERROR   Uncaught Exception      {"errorType":"Error","errorMessage":"Cannot find module '/var/task/lib/commonMiddleware' imported from /var/task/handlers/getAuction.js","code":"ERR_MODULE_NOT_FOUND","url":"file:///var/task/lib/commonMiddleware","stack":\["Error \[ERR_MODULE_NOT_FOUND\]: Cannot find module '/var/task/lib/commonMiddleware' imported from /var/task/handlers/getAuction.js","    at finalizeResolution (node:internal/modules/esm/resolve:269:11)","    at moduleResolve (node:internal/modules/esm/resolve:937:10)","    at moduleResolveWithNodePath (node:internal/modules/esm/resolve:1173:14)","    at defaultResolve (node:internal/modules/esm/resolve:1216:79)","    at ModuleLoader.defaultResolve (node:internal/modules/esm/loader:540:12)","    at ModuleLoader.resolve (node:internal/modules/esm/loader:509:25)","    at ModuleLoader.getModuleJob (node:internal/modules/esm/loader:239:38)","    at ModuleWrap.\<anonymous\> (node:internal/modules/esm/module_job:96:40)","    at link (node:internal/modules/esm/module_job:95:36)"\]}

 INIT_REPORT Init Duration: 949.46 ms    Phase: invoke   Status: error  Error Type: Runtime.Unknown

 START - b268505b-edc7-49c1-a4cb-27cc869d550f - Version: $LATEST

 END - b268505b-edc7-49c1-a4cb-27cc869d550f

 REPORT - b268505b-edc7-49c1-a4cb-27cc869d550f

 Duration: 960.51 ms     Billed Duration: 961 ms Memory Size: 256 MB    Max Memory Used: 73 MB  Status: error   Error Type: Runtime.Unknown

这是我的端点运行它的功能：

import AWS from 'aws-sdk';
import createError from 'http-errors';
import middy from '@middy/core';
import httpJsonBodyParser from '@middy/http-json-body-parser';
import httpEventNormalizer from '@middy/http-event-normalizer';
import httpErrorHandler from '@middy/http-error-handler';
import { getAuctionById } from './getAuction';

const dynamoDB = new AWS.DynamoDB.DocumentClient();

async function placeBid(event, context) {
  const { id } = event.pathParameters;
  const { amount } = event.body;

  const auction = await getAuctionById(id);

  console.log('AUCTIONS', auction);

  if (amount <= auction.highestBid.amount) {
    throw new createError.Forbidden(
      `Your bid must be higher than ${auction.highestBid.amount}!`,
    );
  }

  const params = {
    TableName: process.env.AUCTIONS_TABLE_NAME,
    Key: { id },
    UpdateExpression: 'set highestBid.amount = :amount',
    ExpressionAttributeValues: {
      ':amount': amount,
    },
    ReturnValues: 'ALL_NEW',
  };

  let updatedAuction;

  try {
    const result = await dynamoDB.update(params).promise();
    updatedAuction = result.Attributes;
  } catch (error) {
    console.error(error);
    throw new createError.InternalServerError(error);
  }

  return {
    statusCode: 200,
    body: JSON.stringify(updatedAuction),
  };
}

export const handler = middy(placeBid)
  .use(httpJsonBodyParser())
  .use(httpEventNormalizer())
  .use(httpErrorHandler());

我尝试更改导入 getAuctionById 函数的方式以及导出此函数的方式，下面是我导出此函数的代码：

import AWS from 'aws-sdk';
import createError from 'http-errors';
import commonMiddleware from '../lib/commonMiddleware';

const dynamoDB = new AWS.DynamoDB.DocumentClient();

const getAuctionById = async id => {
  let auction;

  try {
    const result = await dynamoDB
      .get({
        TableName: process.env.AUCTIONS_TABLE_NAME,
        Key: { id },
      })
      .promise();

    auction = result.Item;
  } catch (error) {
    console.error(error);
    throw new createError.InternalServerError(error);
  }

  return auction;
};

async function getAuction(event, context) {
  const { id } = event.pathParameters;
  const auction = await getAuctionById(id);

  if (!auction) {
    throw new createError.NotFound(`Auction with ID "${id}" not found!`);
  }

  return {
    statusCode: 200,
    body: JSON.stringify(auction),
  };
}

export const handler = commonMiddleware(getAuction);

export { getAuctionById };

我仍然尝试直接在函数声明中进行导出，如下所示：

module.exports = getAuctionById

但是我没有成功！

Answer 1

未捕获的异常错误是由一组额外的 '} 或 {' 引起的。 查找不必要的括号并将其从代码中删除。 我为你指出并评论了它。在您的出口代码内。确保再次检查所有代码，尤其是代码中括号周围的代码。

import AWS from 'aws-sdk';
import createError from 'http-errors';
import commonMiddleware from '../lib/commonMiddleware';

const dynamoDB = new AWS.DynamoDB.DocumentClient();

const getAuctionById = async id => {
  let auction;
  try {
    const result = await dynamoDB
      .get({
        TableName: process.env.AUCTIONS_TABLE_NAME,
        Key: { id },
      })
      .promise();

    auction = result.Item;
  } catch (error) {
    console.error(error);
    throw new createError.InternalServerError(error);

//}  <--- Remove this here:

  return auction;
};

async function getAuction(event, context) {
  const { id } = event.pathParameters;
  const auction = await getAuctionById(id);

  if (!auction) {
    throw new createError.NotFound(`Auction with ID "${id}" not found!`);
  }

  return {
    statusCode: 200,
    body: JSON.stringify(auction),
  };
//} <--- Remove this

export const handler = commonMiddleware(getAuction);

export { getAuctionById };