如何解决AWS错误：“‘函数’类型的参数不能分配给‘IFunction’类型的参数”

Question

我想从https://docs.aws.amazon.com/cdk/latest/guide/serverless_example.html获得下面的示例代码，但是我得到一个“类型‘函数’的参数不能分配给‘IFunction’类型的参数”错误。

import * as cdk from '@aws-cdk/core';
import * as apigateway from '@aws-cdk/aws-apigateway';
import * as lambda from '@aws-cdk/aws-lambda';

export default class ApiGatewayFunctionStack extends cdk.Stack {
  
  constructor(scope: cdk.App, id: string, props?: cdk.StackProps) {
    
    super(scope, id, props);

    const handler = new lambda.Function(this, 'WidgetHandler', {
      runtime: lambda.Runtime.NODEJS_10_X, // So we can use async in widget.js
      code: lambda.Code.fromAsset('resources'),
      handler: 'widgets.main',
    });

    const api = new apigateway.RestApi(this, 'widgets-api', {
      restApiName: 'Widget Service',
      description: 'This service serves widgets.',
    });

    const getWidgetsIntegration = new apigateway.LambdaIntegration(handler, {
      requestTemplates: { 'application/json': '{ "statusCode": "200" }' },
    });

    api.root.addMethod('GET', getWidgetsIntegration); // GET /
  }
}

下面的全部错误似乎表明，至少部分问题是apigateway包有它自己的包是不兼容的。

我不知道该如何解决这个问题，所以任何帮助都是非常感谢的。

test-deploy/ApiGatewayFunctionStack.ts:49:68 - error TS2345: Argument of type 'Function' is not assignable to parameter of type 'IFunction'.
  Types of property 'role' are incompatible.
    Type 'import("D:/Users/andyb/Documents/github/agb-aws-functions/node_modules/@aws-cdk/aws-iam/lib/role").IRole | undefined' is not assignable to type 'import("D:/Users/andyb/Documents/github/agb-aws-functions/node_modules/@aws-cdk/aws-apigateway/node_modules/@aws-cdk/aws-iam/lib/role").IRole | undefined'.
      Type 'import("D:/Users/andyb/Documents/github/agb-aws-functions/node_modules/@aws-cdk/aws-iam/lib/role").IRole' is not assignable to type 'import("D:/Users/andyb/Documents/github/agb-aws-functions/node_modules/@aws-cdk/aws-apigateway/node_modules/@aws-cdk/aws-iam/lib/role").IRole'.
        Types of property 'grant' are incompatible.
          Type '(grantee: import("D:/Users/andyb/Documents/github/agb-aws-functions/node_modules/@aws-cdk/aws-iam/lib/principals").IPrincipal, ...actions: string[]) => import("D:/Users/andyb/Documents/github/agb-aws-functions/node_modules/@aws-cdk/aws-iam/lib/grant").Grant' is not assignable to type '(grantee: import("D:/Users/andyb/Documents/github/agb-aws-functions/node_modules/@aws-cdk/aws-apigateway/node_modules/@aws-cdk/aws-iam/lib/principals").IPrincipal, ...actions: string[]) => import("D:/Users/andyb/Documents/github/agb-aws-functions/node_modules/@aws-cdk/aws-apigateway/node_modules/@aws-cdk/aws-iam/lib...'.
            Types of parameters 'grantee' and 'grantee' are incompatible.
              Type 'import("D:/Users/andyb/Documents/github/agb-aws-functions/node_modules/@aws-cdk/aws-apigateway/node_modules/@aws-cdk/aws-iam/lib/principals").IPrincipal' is not assignable to type 'import("D:/Users/andyb/Documents/github/agb-aws-functions/node_modules/@aws-cdk/aws-iam/lib/principals").IPrincipal'.
                Types of property 'addToPolicy' are incompatible.
                  Type '(statement: import("D:/Users/andyb/Documents/github/agb-aws-functions/node_modules/@aws-cdk/aws-apigateway/node_modules/@aws-cdk/aws-iam/lib/policy-statement").PolicyStatement) => boolean' is not assignable to type '(statement: import("D:/Users/andyb/Documents/github/agb-aws-functions/node_modules/@aws-cdk/aws-iam/lib/policy-statement").PolicyStatement) => boolean'.
                    Types of parameters 'statement' and 'statement' are incompatible.
                      Type 'import("D:/Users/andyb/Documents/github/agb-aws-functions/node_modules/@aws-cdk/aws-iam/lib/policy-statement").PolicyStatement' is not assignable to type 'import("D:/Users/andyb/Documents/github/agb-aws-functions/node_modules/@aws-cdk/aws-apigateway/node_modules/@aws-cdk/aws-iam/lib/policy-statement").PolicyStatement'.
                        Types have separate declarations of a private property 'action'.

49     const getWidgetsIntegration = new apigateway.LambdaIntegration(handler, {

Answer 1

当CDK依赖项的版本处于不同版本时，通常会发生此错误Argument of type 'SomeClass' is not assignable to parameter of type 'ISomeClass'。为了解决这个问题，我们需要将所有的依赖项都放到同一个版本中。

删除package-lock.json

• Ensure

• node_modules文件夹

• 删除package.json中的所有依赖项在依赖项之前使用相同的version.

• Remove胡萝卜^符号，例如从“@aws/aws”："^1.90.0“到”@aws/aws“："1.90.0”，以避免不同的次要版本获取installed.

• npm install

。

Answer 2

另一个解决方案是像这样导入包：

const lambda = require('@aws-cdk/aws-lambda');

但是代码质量检查程序(例如ESLINT)可能不喜欢它。