fix for jupyter-editor issue

[nicolaskruchten]

This will address at least part of https://github.com/plotly/jupyterlab-chart-editor/issues/1

[gnestor]

I'm running into a new error with this fix:

Uncaught TypeError: Cannot read property 'type' of undefined
    at Object.r.getTraceValObject (<anonymous>:7:1712492)
    at Object.getValObject (connectTraceToPlot.js:81)
    at unpackPlotProps (unpackPlotProps.js:35)
    at Function.supplyPlotProps (connectToContainer.js:71)
    at Fold.js:66
    at forEachSingleChild (react.development.js:858)
    at traverseAllChildrenImpl (react.development.js:762)
    at traverseAllChildrenImpl (react.development.js:778)
    at traverseAllChildren (react.development.js:833)
    at Object.forEachChildren [as forEach] (react.development.js:878)
    at Fold.determineVisibility (Fold.js:62)
    at new Fold (Fold.js:46)
    at constructClassInstance (react-dom.development.js:6355)
    at updateClassComponent (react-dom.development.js:7839)
    at beginWork (react-dom.development.js:8225)
    at performUnitOfWork (react-dom.development.js:10224)
    at workLoop (react-dom.development.js:10288)
    at HTMLUnknownElement.callCallback (react-dom.development.js:542)
    at Object.invokeGuardedCallbackDev (react-dom.development.js:581)
    at invokeGuardedCallback (react-dom.development.js:438)
    at renderRoot (react-dom.development.js:10366)
    at performWorkOnRoot (react-dom.development.js:11014)
    at performWork (react-dom.development.js:10967)
    at batchedUpdates (react-dom.development.js:11086)
    at batchedUpdates (react-dom.development.js:2330)
    at dispatchEvent (react-dom.development.js:3421)

[nicolaskruchten]

OK this feels a bit like whack-a-mole but if you could try this updated patch I'd be grateful as I can't seem to wire it up on my end. Clearly for some reason within the Jupyter context something is being rendered in a different order from the way it gets done elsewhere. These extra checks should prevent that render from erroring out, and then on the next one things render as they should. It's a bit weird but I've successfully gotten this pattern working elsewhere in the editor so once enough guards are in place it should work :)

[VeraZab]

💃