Extending s3 Client in aws-sdk

So, I am trying to extend s3 client in aws-sdk to add some new functionalities to the existing functions, but i keep getting this error

Class constructor S3Client cannot be invoked without 'new'

when i try to instantiate an object from my class...

This is my code

import S3 from "aws-sdk/clients/s3";

class S3Client extends S3 {
  constructor() {
    super();
  }
}

const s3 = new S3Client();

Anyone knows what i am doing wrong? When I tried searching for the error all that came up was that I should change the target in my tsconfig.json to be ES6, I already tried that but still the same issue...