perf: put exports at the end of the file

[tim-kilian]

Closes #97

Changes

• First define methods and then assign it afterwards to exports

[dougwilson]

Thanks, but I prefer them to be at the top so seeing them is obvious. It is 100% valid comon JS export usage and javascript. It sounds like perhaps a bug should be reported to your editor, unless you can provide official documentation from your editor that says this is required.