wrong `composes` for propType objects that are wrapped

Hello!

when defining prop types people do all sorts of things, for example:

import omit from 'lodash/omit';
import OtherComponent from 'important/path';

export default class Component extends React.PureComponent {
  propTypes = {
    ...omit(OtherComponent.propTypes, ['exclude', 'us']),
    something: bool
  };

  // ...
}

Expected

composes array is ['important/path']

Actual

composes array is ['lodash/omit']

i'm not even sure how this should be handled.
In example above it seems that extracting first argument from function
should be enough. But what if the composed prop types are not first
argument?

Should react-docgen support such cases at all? It seems valid to do so
from JS perspective but generated documentation is incomplete.

Recently https://github.com/reactjs/react-docgen/issues/248 was closed, so perhaps this issue should be considered too.

Thanks for the library!

ラップされた prop-type 式から react-docgen がどのように composes 配列を導出するかを、omit(OtherComponent.propTypes, ...) の例を再現ケースとして使って、まず追跡します。期待される important/path の結果と実際の lodash/omit の結果を比較し、先頭以外の合成引数をどのように扱うべきかを判断します。サポートされるラップされた式のケースについて動作が定義され、テストでカバーされれば完了です。