I get the "dependency hell" issue in Javascript world, but why would I rewrite this particular utility? It's well tested (both unit and field tested), includes edge cases and has zero dependencies. As a dependency, I will also get any future bug fixes or features if I wish to. An even better example is lodash. Would you really rewrite every util you need just for the sake of not having external dependencies?
Probably because the scope is so small that you _could_ actually rewrite it yourself. And then together with all these other toy libraries, stick it in one big one that covers everything you need in terms of convenience functions.
So much this. It's 30 lines of code. The remaining code is comment fluff and 15 lines dedicated to the various types of export utilities (AMD, NPM, window). Seriously this is such an odd package to start these arguments with.
