Using CDKv2 with TypeSCript giving error ts2345

Question

I am trying to learn TypeScript and CDKV2.

test.ts
import 'source-map-support/register';
import * as cdk from 'aws-cdk-lib';
import { teststack } from '../src/teststack';
const queueName = 'input-queue';
const app = new cdk.App();
new Task2Stack(app, 'teststack', { queueName: queueName });

teststack.ts
import * as cdk from 'aws-cdk-lib';
import { Construct } from 'constructs';
import * as sqs from 'aws-cdk-lib/aws-sqs';

export interface getStackProps extends cdk.StackProps {
  readonly queueName: string;
  env: {
    account: '123456789012',
    region: 'us-east-1'
  }
}

export class teststack extends cdk.Stack {
  constructor(scope: Construct, id: string, props: getStackProps) {
    super(scope, id, props);

    // The code that defines your stack goes here

    // example resource
    const queue = new sqs.Queue(this, '.....', {
      visibilityTimeout: cdk.Duration.seconds(300),
      queueName: props.queueName,
    });
  }
}

---

Error:

Argument of type '{ queueName: string; }' is not assignable to parameter of type 'getStackProps'.
  Property 'env' is missing in type '{ queueName: string; }' but required in type 'getStackProps'.ts(2345)
teststack.ts(7, 3): 'env' is declared here.

Question: If I remove/comment env it works fine. Is it possible to convert getStackProps to a function so that I can eliminate this error ? What is causing this error ? Can anyone please explain ?