fix get count dislikes on mobile version of youtube

[TalosDx]

The pull request fixes getting dislikes on the mobile version of the site. It fixes it in two ways.

1. Checking the existence of the dislikes button before adding a listener to increase the number of dislikes.
2. An alternative solution, in case the error still occurred. (Possibly requires a fix, because it is performed without delay)

Problem founded in compiled code:

buttons.children[0].children[0].addEventListener("click", likeClicked);
buttons.children[0].children[1].addEventListener("click", dislikeClicked);
buttons.children[0].children[0].addEventListener("touchstart", likeClicked);
buttons.children[0].children[1].addEventListener("touchstart", dislikeClicked);

buttons.children[0].children[1] is undefined

Why getDislikesButtons() compiled to buttons.children[0].children[1] i don't know.

[sy-b]

Thank you! 🙂

[TalosDx]

It is also worth looking into that the code compiles. It is possible that the problem is in the compilation. I say this because my code practically did not change after compilation.

[Anarios]

Thanks a lot

[TalosDx]

After being accepted into the main branch, it is also necessary to collect it into a single file (dir UserScript), I tried to do it locally, but for some reason it was collected in several different files.

[ranazee]

Solve this iss8