Regular Expressions - Restrict Possible Usernames

Tell us what’s happening:
Describe your issue in detail here.

Your code so far

let username = "JackOfAllTrades";
let userCheck = /^(?!^[0-9])[a-zA-Z]{2}|^(?!^[0-9])(?=.{3,})[a-zA-Z0-9]*[a-zA-Z][a-zA-Z0-9]*[0-9]*$/

let result = userCheck.test(username);

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36

Challenge: Regular Expressions - Restrict Possible Usernames

Link to the challenge:

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