Introduction

I started the migration to Typescript because you have written this in your TODO in README. I changed the main files for working with autocomplete and static types for props.

Changes

• added rollup for optimizing bundle with babel and typescript definitions;
• changed rm -rf to rimraf for working from Windows;
• removed some unused dependencies which I handle with depcheck;
  Also can be removed:
  

Current known flaws/bugs:

• can't handle useAliases: false;
• can't throw an error, when incorrect props set, like in styled-components;
  
• change string to string literal
  For example:

font-weight: number | string

to

font-weight: "-moz-initial" | "inherit" | "initial" | "revert" | "unset" | "bold" | "normal" | (number & {}) | "bolder" | "lighter"

Some details

I set type for keys of dict object to keyof CSS.PropertiesHyphen from csstype, but some CSS properties were not found (some of this I can't find in MDN!).
Also I changed mistype 'outline-width|thin|medium|thick' to 'outline-width'.

For generating valid types of dict(full name and aliases) I create a script, which you can run

$ npm run dict

I don’t know if it’s the best way, but I haven’t come up with another solution.

TODO

I am describing this task for all contributors because I do not know if I will do it.

• Fix all bugs and flaws
  • can't handle useAliases: false
  • can't throw an error, when incorrect props set, like in styled-components;
• Change type from string to string literals.
• Change other files to typescript
• Remove all 'any'
• Update tests for typescript

P.S.

I think that this pull request need be merged into 'feat/typescript' for additional changes instead 'master', but I can't do this, because 'feat/typescript' doesn't exist.