> they are proficient in JavaScript, I expect them to be able to get moving without checking documentation constantly You might need to adjust your expectation

> they are proficient in JavaScript, I expect them to be able to get moving without checking documentation constantly You might need to adjust your expectations. I check documentation all the time because I can't remember what language uses 'size', 'size()', 'length', 'length()', 'count', or 'count()'. I have no value in memorizing those facts because I can simply look them up.