The node_modules one is rubbish IMO, I think their doco is absurd. You can just compile things down using webpack or such, this makes the package smaller and can be optimized for faster execution as well.

The retry one is new to me, need to read more about it.

Thanks for the info.

I've always built my lambdas before upload and never upload my node_modules folder. It also means that when you get an error, debugging can be tricky.