如何在Javascript / jQuery的Map数据结构中获取Map值?

I am using a JS sdk for chat and they are returning a Map value. I'm unable to copy/paste the response in here as it is received, so I am adding the response as an image to make things understandable.

Map

So, to get the members in the Map data structure I am doing this:

$.map(channel.members,function(key, value) {

      console.log("Key",key);
      console.log("Value",value);

 });

It prints _c for Value and Map { } (0) for Key in console. Shouldn't it be opposite? So, I am unable to figure that why the key has empty Map? Shouldn't it be Map { key: value } (2). As you can see in the image it contains values within it, so why I am getting an empty Map { } (0). How can I get the values inside it?