[QUESTION]TypeMismatch: Expected xxx to be of type object, instead found type object

Hey guys I am pretty new to DynamoDB and dynamoose, trying to migrate my mongoose code/db to dynamoose/dynamodb. I am having this exception while trying to save custom object- “TypeMismatch: Expected name to be of type object, instead found type object”. Here is my sample code on nodejs/typescript-

  export = {
    run: async() => {
        dynamoose.aws.sdk.config.update({ 
            "accessKeyId": "AKID", 
            "secretAccessKey": "SECRET", 
            "region": "us-east-1" 
        }); 
        dynamoose.aws.ddb.local();
        const Man = dynamoose.model('Man', {
            id: String,
            name: {
                type: Object,
                schema: {
                    firstname: String,
                    lastname: String
                }
            }});
        Man.create({
            id:"random",
            name: new Name("John", "Martin")
        });
    }
}.run();
class Name {
    firstname: string;
    lastname: string;
    constructor(firstname: string, lastname: string){
        this.firstname = firstname;
        this.lastname = lastname;
    }
}

Can you help me with this?

[fishcharlie]

@albertoantunes This is the expected behavior. You can’t store instances of classes in Dynamoose. You have to convert it to a plain JSON object.

[yashutanna]

Hey @fishcharlie I actually have the same issue but under a different schema type:

const Shop = new dynamoose.Schema({
    operatingHours: {
        type: Array,
        schema: [{
          type: Object,
          schema: {
            open: Boolean,
            timeFrom: Number,
            timeTo: Number,
            dayOfWeek: String
          }
        }]
      },
    })

with documentation example from here

this is the error I get for reference:

{
      "message": "Expected operatingHours.0 to be of type object, instead found type object.",
      "locations": [
        {
          "line": 2,
          "column": 3
        }
      ],
      "path": [
        "addBusiness"
      ],
      "extensions": {
        "code": "INTERNAL_SERVER_ERROR",
        "exception": {
          "name": "TypeMismatch",
          "message": "Expected operatingHours.0 to be of type object, instead found type object.",
          "stacktrace": [
            "TypeMismatch: Expected operatingHours.0 to be of type object, instead found type object.",
            "    at checkTypeFunction (/Users/yashutanna/projects/restaurant-server/node_modules/dynamoose/lib/Document.ts:302:11)",
            "    at /Users/yashutanna/projects/restaurant-server/node_modules/dynamoose/lib/Document.ts:309:7",
            "    at Array.forEach (<anonymous>)",
            "    at checkTypeFunction (/Users/yashutanna/projects/restaurant-server/node_modules/dynamoose/lib/Document.ts:307:11)",
            "    at Array.map (<anonymous>)",
            "    at Function.<anonymous> (/Users/yashutanna/projects/restaurant-server/node_modules/dynamoose/lib/Document.ts:321:111)",
            "    at Generator.next (<anonymous>)",
            "    at fulfilled (/Users/yashutanna/projects/restaurant-server/node_modules/dynamoose/dist/Document.js:5:58)",
            "    at processTicksAndRejections (internal/process/task_queues.js:94:5)"
          ]
        }
      }

I suspect the issue is at this path dynamoose/dist/utils/dynamoose/getValueTypeCheckResult.js but i am struggling to figure out the logic in that file.

I would love a workaround if this is a bigger issue?

Thanks for the awesome library!