Use ncc compile source file as a single file

[zcong1993]

Use @zeit/ncc compile source file as a single file.
This can make git repo clean.

[damccorm]

I don't think we want this - IMO this actually makes it less clear what is going on in the repo. I think the real solution here is to move to the workflow described here, where node_modules are only included on release branches

[zcong1993]

Why this make less clear ? This solution can ignore node_modules even in release branches. Do you think the current compiled lib still readable or more clear than this ?

[damccorm]

I think the current lib is more readable. It maintains the separation of concerns of different files, and maps to the TypeScript well. This is important so that a reviewer can verify that changes to the TS files match changes in the JS files.