Typescript unused imports

[pbomb]

What:

• Fix TypeScript compilation error
• Fix eslint error with JSDocs

Why:
The Travis CI build is currently broken on these 2 issues.

How:

• Add tsconfig to error on unused imports to help identify invalid usages and then removed them
• Added JSDoc @param and @return declarations

Checklist:

• Documentation N/A
• Tests N/A
• Ready to be merged
• Added myself to contributors table

[codecov-io]

Codecov Report

Merging #176 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master   #176   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files           4      4           
  Lines         267    267           
  Branches       64     64           
=====================================
  Hits          267    267

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[kentcdodds]

Thank you!

[pbomb]

You're welcome!

[kentcdodds]

Thanks again for your help! I've added you as a collaborator on the project. Please make sure that you review the CONTRIBUTING.md file (specifically the bit about the commit messages and the git hooks) and familiarize yourself with the code of conduct (we're using the contributor covenant). You might also want to watch the repo to be notified when someone files an issue/PR. Please continue to make PRs as you feel the need (you can make your branches directly on the repo rather than your fork if you want). Thanks! And welcome to the team :)

[pbomb]

Cool, thanks! I'll take a look at all those things. Some of these will be new for me.

[kentcdodds]

You may also find this useful: https://github.com/paypal/downshift/blob/master/other/MAINTAINING.md