It's a great project to teach yourself something but I don't really see why people might want to use this over lodash/underscore? For example, `exists` functio

It's a great project to teach yourself something but I don't really see why people might want to use this over lodash/underscore? For example, `exists` function can not really help with undeclared variables. At the end of day you have to use `typeof something !== 'undefined'`. I don't really understand what this library is trying to solve