This is my experience too. I can switch to another programming language and write the For Loops and branching logic and all that jazz no problem. But there's o

This is my experience too. I can switch to another programming language and write the For Loops and branching logic and all that jazz no problem. But there's often a lot of nuances that you just don't know and it takes a while to accumulate that knowledge. Those are usually referred to as "Best Practices" and there usually isn't a single source of truth document out on the Internet or anywhere to learn all of them. They just come with experience and time, and maybe if you're lucky mentorship from a more experienced dev who knows those practices. This is very clear to me having watched Java devs flounder their way through building JavaScript microservices using all of the old Gang of Four patterns and basically zero of the modern ES functionality.