How do I customize the shopping cart and checkout components?

Question

1C-Bitrix

Good afternoon!
When getting acquainted with these components, their 6000-line js code is somewhat confusing.
There is an idea not to poke around in this sheet, but to make your own custom components from scratch with the necessary functionality.
I would like to know the opinion of the old-timers how do you work: do you parse such a large code or write your own?

Answer 1

How do I customize the shopping cart and checkout components?

With pain))
And that's a good idea. Only if you have the necessary skills to work with the Bitrix Framework.
I almost always write mine.
But I would also like to know the opinion of other developers.

Answer 2

Ha! Say hi to Orlando Vilasek at this point)
I personally used the old checkout component.