feat: fallback to original findDOMNode if using function component

[zombieJ]

Add an additional try...catch... to check throw with function component. If can not get DOM node by ref will fallback to use findDOMNode(this) to get the workable DOM node.

[vercel]

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[codecov]

Codecov Report

Merging #145 into master will increase coverage by 0.14%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #145      +/-   ##
==========================================
+ Coverage   83.55%   83.69%   +0.14%     
==========================================
  Files           7        7              
  Lines         456      460       +4     
  Branches      121      122       +1     
==========================================
+ Hits          381      385       +4     
  Misses         75       75

Impacted Files	Coverage Δ
src/index.tsx	79.73% <100%> (+0.26%)	⬆️

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[lgtm-com]

This pull request introduces 1 alert when merging 3557eed into 8c2ad74 - view on LGTM.com

new alerts:

• 1 for Unused variable, import, function or class

[lgtm-com]

This pull request fixes 1 alert when merging 6c4bca1 into 8c2ad74 - view on LGTM.com

fixed alerts:

• 1 for Useless conditional

[stevensacks]

I'm curious how getTriggerDOMNode works. I can't find the actual function anywhere in the code...

[zombieJ]

getTriggerDOMNode is internal usage. Avoid this since it may refactor.