Dynamodb Streams 中不兼容的 AttributeValue 类型

Question

我正在尝试在@aws-sdk/util-dynamodb中提供的官方unmarshall组 function 的帮助下解组 dynamodb stream 记录。

我在 typescript 中执行此操作，定义如下所示

unmarshall: (data: Record<string, AttributeValue>, options?: unmarshallOptions | undefined)

这里AttributValue派生自@aws-sdk/client-dynamodb 。

dynamodb 记录的传入类型如下所示

export interface DynamoDBRecord {
    awsRegion?: string | undefined;
    dynamodb?: StreamRecord | undefined;
    eventID?: string | undefined;
    eventName?: 'INSERT' | 'MODIFY' | 'REMOVE' | undefined;
    eventSource?: string | undefined;
    eventSourceARN?: string | undefined;
    eventVersion?: string | undefined;
    userIdentity?: any;
}

export interface StreamRecord {
    ApproximateCreationDateTime?: number | undefined;
    Keys?: { [key: string]: AttributeValue } | undefined;
    NewImage?: { [key: string]: AttributeValue } | undefined;
    OldImage?: { [key: string]: AttributeValue } | undefined;
    SequenceNumber?: string | undefined;
    SizeBytes?: number | undefined;
    StreamViewType?: 'KEYS_ONLY' | 'NEW_IMAGE' | 'OLD_IMAGE' | 'NEW_AND_OLD_IMAGES' | undefined;
}

export interface AttributeValue {
    B?: string | undefined;
    BS?: string[] | undefined;
    BOOL?: boolean | undefined;
    L?: AttributeValue[] | undefined;
    M?: { [id: string]: AttributeValue } | undefined;
    N?: string | undefined;
    NS?: string[] | undefined;
    NULL?: boolean | undefined;
    S?: string | undefined;
    SS?: string[] | undefined;
}

这里的Attribute值来自@types/aws-lambda/trigger/dynamodb-stream.d.ts

当我做unmarshall(dynamodbRecord.dynamodb.NewImage)我收到错误

'{ [key: string] 类型的参数：AttributeValue; }' 不可分配给“Record<string, AttributeValue>”类型的参数。 索引签名不兼容。 类型 'AWSLambda.AttributeValue' 不可分配给类型 'import("/Users/hitesh/learnapp/la-aws/node_modules/@aws-sdk/client-dynamodb/dist-types/models/models_0").AttributeValue'。 “AttributeValue”类型中缺少属性“$unknown”，但在“$UnknownMember”类型中是必需的。

为什么我们在@aws-sdk/client-dynamodb和@types/aws-lambda/trigger/dynamodb-stream.d.ts中有不同的AttributeValue定义？