Buffer variable leaks into global scope

[Srokap]

should use var buffer = instead of buffer =. Also adding "use strict"; is perhaps worth considering.

I generally caught the issue using mocha in my project for integration testing. Could consider adding here jshint perhaps if you're still interested in this library.

[jstapels]

Thanks, I haven't looked at this in awhile but when I get some time I'll add in the strict flag and try to clean it up a bit. Feel free to make a pull request if you've already fixed some issues.

[Srokap]

It does not seem to be a problem on main branch anymore.