converts EuiForm (and family) to TypeScript

[dimitropoulos]

closes: #2892

[kibanamachine]

Since this is a community submitted pull request, a Jenkins build has not been kicked off automatically. Can an Elastic organization member please verify the contents of this patch and then kick off a build manually?

[snide]

Thanks again for the PR. We'll mostly be silent over the weekend, but will give this a review on Monday.

[chandlerprall]

Thanks for another detailed & thorough conversion!

src/components/form/form.test.tsz was renamed with an invalid file extension

Reviewed most of the changes; left the form vs. div prop stuff until that conversation & decision happens.

Have not thoroughly reviewed changes to exports, as there is a request to decrease the scope of some of those.

[dimitropoulos]

fixed form.test.tsz -> form.test.tsx in ffc0e27 (whoops! 😅 I was moving very fast the night I did these.. heh.)

Otherwise, I think I've addressed all other feedback and just need some direction on what/how you want to be exported. I know with this kind of thing (since I've now exported everything it'll be literally just deleting single lines in the various index.ts in subdirectories like field_number/) it can be easier to just make the change rather than writing up detailed descriptions of the changes in a PR. I'm happy to do anything that works well for you all - so feel free to do what's easiest for you.

[chandlerprall]

Everything's looking great! Please reset those extra exports and I'll do one last check of the build/eui.d.ts.

[dimitropoulos]

@chandlerprall see #2896 (comment) and #2896 (comment), but otherwise I think we're all set here 😃!

[chandlerprall]

Changes LGTM; pulled & tested locally, including impact to eui.d.ts which removes some previously exported values that were never exported on the JS side (bugfix).