Somebody who uses actively the language on regular basis and has interest to learn more about it to be more efficient and might have interest in JavaScript tool

Somebody who uses actively the language on regular basis and has interest to learn more about it to be more efficient and might have interest in JavaScript tools and/or utilities that might his/her work easier. Or... another take. Somebody who types JavaScript code at least a few hours per week on regular basis. That's my rough definition.