Function as property of another function ES5

Question

I haven't long written es5, so I forgot. Can you help how to fix this?

let mock = {
  DynamoDB: function() {
    {
        send: function() {console.log('sending...')}
    }
  },
};

then not working.

let client = new mock.DynamoDB();
client.send(); // does not write to console

Answer 1

A constructor function should assign to a property of this.

let mock = {
  DynamoDB: function() {
    this.send = function() {
      console.log('sending...')
    }
  }
};

let client = new mock.DynamoDB();
client.send();