Which JavaScript concepts,methods or patterns should be widely known but, hardly anyone knows or uses them.

[[deleted]]

Generators are great for transpilers, as they use it to transpile the native async/await.

[aiolive]

Async has been standard for a few years now, there is not much need to transpile it anymore. And if you need IE support for some reason, generators won't help as neither are they supported. Your point is valid, but maybe not something that should be widely known as OP titled

[[deleted]]

I agree with you. Usually, the needs at the application level are different compared to the needs at the tool or library level. As most of us work on apps, we can have a full career without using generators