AWS CDK NodejsFunction：导入导出为“export =”的模块

Question

Is there any way to use modules (eg sharp) exported as export = someModule in a Lambda function defined using NodejsFunction in the aws-cdk-lib ?
The require statement( const xxx = require('module') ) does not seem to work with the Lambda TypeScript code that CDK bundles.

Both of the following import writing methods resulted in the error.

import sharp from 'sharp'
import * as sharp from 'sharp'
import sharp = require('sharp')

Something went wrong installing the \"sharp\" module
Cannot find module '../build/Release/sharp-linux-x64.node'
Require stack:
- /var/task/index.js
- /var/runtime/index.mjs

The CDK code defines the Lambda function as follows.

import { aws_lambda_nodejs as lambda } from 'aws-cdk-lib'

const fn = new lambda.NodejsFunction(scope, 'fn-id', {
  entry: 'lib/lambda/my-fn.ts',
  functionName: 'fn-name'
})

Answer 1

If you're introducing node_modules or external modules for your NodejsFunction, you'll need to specify this in your CDK Stack.

Look at bundling options to learn more.

Here's an example that uses externalModules , nodeModules and layers to access resources.

this.lambdaFunctionExample= new NodejsFunction(this, `lambdaFunctionExample`, {
  runtime: Runtime.NODEJS_18_X,
  handler: "handler",
  bundling: { minify: false, nodeModules: ["@aws-sdk/client-sfn", "axios", "axios-retry"], externalModules: ["aws-sdk", "crypto-js"] },
  layers: [lambdaLayerStack.getSecrets, lambdaLayerStack.generateMagentoAuthorisationHeader]
});