These aren't just random libraries that some FAANG dev worked on in their free time. These are company-released libraries and frameworks, that have full time employees working on them. If these companies are willing to pay FAANG engineer salaries for these employees, I expect it to be FAANG level work
As for anecdotal evidence, sure I have some, my professional experience is pretty evenly split between Java and Javascript, both backend and frontend. I feel like they are of equal difficulty, and to me this is obvious as well. It was always in my power to scale up the difficulty as high as I wanted. I have no doubt you won't be happy with this answer though
As for anecdotal evidence, sure I have some, my professional experience is pretty evenly split between Java and Javascript, both backend and frontend. I feel like they are of equal difficulty, and to me this is obvious as well. It was always in my power to scale up the difficulty as high as I wanted. I have no doubt you won't be happy with this answer though