element.ownerDocument.documentElement is null onMount in linked package

[bigmistqke]

With the following snippet:

export const BugCheck =  () => {
  const [documentElement, setDocumentElement] = createSignal<HTMLElement>()
  return (
    <pre
      ref={element => {
        onMount(() => setDocumentElement(element.ownerDocument.documentElement))
      }}
    >
      {documentElement() === null ? 'NULL' : documentElement()?.innerHTML}
    </pre>
  )
}

We get different results in between dev and build when linking the package into a solid app:

element.ownerDocument.documentElement is defined in dev mode, but is null when build.

When delaying it by a frame with requestAnimationFrame we do get the expected result:

When inlining it directly in the app, it also does not give an error, so it's a quite surprising bug. Afaik the bug also does not seem to show up when downloading the published library, only during linking (am i correct in this, @ralphsmith80 ?)

a minimal reproduction of the bug

This bug came apparent during development of solid-plotly.js as plotly-js apparently makes use of this during initialisation.

[ralphsmith80]

That's correct @bigmistqke. It's only an issue when linking.