I agree, but I would take it a step further. If you think it’s easier to find and import a library to test if a number is even than to use the modulus operator

I agree, but I would take it a step further. If you think it’s easier to find and import a library to test if a number is even than to use the modulus operator in an if clause, should you really be responsible for writing any code at all? I feel like JavaScript in particular has developed this ecosystem of inexperienced programmers that “don’t know what they don’t know”. I don’t want to discourage anyone, but I feel like other languages (particularly more mature ones) don’t have that problem to the same degree. For instance, I feel like the cluster module in Node is far easier for people to do things they shouldn’t with than any of the equivalents in C# or Java or even PHP (so it’s not just compiled vs scripting languages).