RxJS distinctUntilChanged - object comparsion

Question

I have stream of objects and I need to compare if current object is not same as previous and in this case emit new value. I found distinctUntilChanged operator should do exa

Answer 1

I finally figure out where problem is. Problem was in version of RxJS, in V4 and earlier is different parameters order than V5.

RxJS 4:

distinctUntilChanged = function (keyFn, comparer)

RxJS 5:

distinctUntilChanged = function (comparer, keyFn)

In every docs today, you can find V4 parameters order, beware of that!