version 2.0.3. Warning in type script logs.

[Nikekpi]

Describe the bug

Warning in typescript logs

To Reproduce

Steps to reproduce the behavior:

1. Open some project with react-split-pane
2. Check console log

Screenshots

[wuweiweiwu]

We will soon be migrating!

[kayesn786]

@wuweiweiwu any update on this? we still have these warning logs.