AWS CDK，类型记录-类型'this‘的参数不能分配给类型'Construct’的参数

Question

我有由cdk cli(Typecript Language)生成的代码：

import { Stack, StackProps } from 'aws-cdk-lib';
import { Construct } from 'constructs';
import * as appsync from '@aws-cdk/aws-appsync';

export class BookStoreGraphqlApiStack extends Stack {
    constructor(scope: Construct, id: string, props?: StackProps) {
        super(scope, id, props);

        const api = new appsync.GraphqlApi(this, 'MyApi', {
            name: 'my-book-api',
            schema: appsync.Schema.fromAsset('graphql/schema.graphql')
        });
    }
}

我得到了一个错误：

Argument of type 'this' is not assignable to parameter of type 'Construct'.
  Type 'BookStoreGraphqlApiStack' is missing the following properties from type 'Construct': onValidate, onPrepare, onSynthesize

我的package.json：

"devDependencies": {
    "@types/jest": "^26.0.10",
    "@types/node": "10.17.27",
    "aws-cdk": "2.2.0",
    "jest": "^26.4.2",
    "ts-jest": "^26.2.0",
    "ts-node": "^9.0.0",
    "typescript": "~3.9.7"
  },
  "dependencies": {
    "@aws-cdk/aws-appsync": "^1.136.0",
    "aws-cdk-lib": "2.2.0",
    "constructs": "^10.0.12",
    "source-map-support": "^0.5.16"
  }

节点版本: v16.13.0

aws版本: 2.2.0

Answer 1

您正在混合来自CDK V1和新发布的CDK V2的依赖关系，它们是不兼容的。

若要获得有效的V2设置，请将AppSync包更改为import * as appsync from '@aws-cdk/aws-appsync-alpha'。在V2中，alpha API有独立的包，稳定的包位于公共的aws-cdk-lib中。AppSync的L2结构属于alpha类别。

以下是两个CDK版本的导入模式概述：

// V2
import { Construct } from 'constructs'; // construct is in a separate package
import { Stack, StackProps, aws_s3 as s3 } from 'aws-cdk-lib'; // common package for stable construct
import * as appsync from '@aws-cdk/aws-appsync-alpha'  // alpha constructs in separate packages

// V1 - separate packages core and for each service
import * as cdk from '@aws-cdk/core';
import * as appsync from '@aws-cdk/aws-appsync';

Answer 2

原来这是aws的一个已知问题，因为v2没有正确迁移，解决方案是：

npm un -g aws-cdk

npm i -g aws-cdk@1.136.0