Clicking on item with subitems causes type error

[Claybarn]

Clicking on a menu item that has subitems (where the desired behavior is to have no action) causes the error:

props.data.handler is not a function

This error can be reproduced by clicking on the "extra" menu item found at the example here.

I imagine the solution is to add a empty function like:
handler() {}

on this line. I forked this repo in the hopes of making a PR with this change, however I can't ensure it fixes the problem because the rete-cli emits a "Type generating failed" error when attempting to compile the context-menu-plugin.

[Ni55aN]

thanks, I'll take a look

duplicates #79

[rete-js]

🎉 This issue has been resolved in version 2.0.2 🎉

The release is available on:

• GitHub release
• npm package (@latest dist-tag)

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