Another attempt at fixing white screen error

[belcherj]

Fix

Attempts to fix issue where this function cannot be found causing a js failure. In the image below Ks is the function this PR moves.

Test

This failure is intermittent and cannot be replicated

Review

Only one developer ise required to review these changes, but anyone can perform the review.

Release

These changes do not require release notes as we don't know if this will resolve the issue

[cbauerman]

I didn't see the white-screen issue, or any other issues, so LGTM

[dmsnell]

@belcherj did we get a report of this breaking? how were we made aware.

it appears to be an issue with the Babel process, whereby we formerly were allowed to move const declarations below their first use because Babel rewrote them as var statements, and the bindings were hoisted up above in scope.

@beaucollins has been doing some work to remove other related hoisting issues in #1596. These defects have always been in the code, but babel hid them during the code transformation.

Was it possible that this appeared when trying to run the app without the Babel transform?

[belcherj]

That could have been the case. It was very intermittent and I never experienced the issue. We were made aware via support requests. @dmsnell

[dmsnell]

We were made aware via support requests.

This is interesting. It's worth keeping an eye on this and related issues, though I think that the work here and in #1596 probably took care of most of it.