fix(customPropTypes|typings): allow to pass a function to itemShorthand, update typings

[layershifter]

POSSIBLE BREAKING CHANGE

src/index.d.ts was renamed to src/generic.d.ts I hope that noone used it from dist/commonjs/index.d.ts because all types are reexported from the root. However I think that this thing should be noticed.

Fixes and improvements

1. In feat(factories): support functions #2790 we introduced a small update to shorthands, however customPropTypes.itemShorthand wasn't updated. This PR does this. Fixes Pagination: Functions work for pageItem, etc. props, but warning is raised for invalid prop #3181.

2. Typings were improved, you will get working autocomplete there 👍 It also satisfies noImplicitAny ✌️

  <Button
    content="Foo"
    icon={(Component, props) => (
      <div className="bar">
        <Component name={props.name} />
      </div>
    )}
  />

3. Some typings tests were added.

[codecov-io]

Codecov Report

Merging #3183 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3183   +/-   ##
=======================================
  Coverage   99.92%   99.92%           
=======================================
  Files         163      163           
  Lines        2746     2746           
=======================================
  Hits         2744     2744           
  Misses          2        2

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[levithomason]

Released in [email protected].