Custom Element "Unwrapping" Plugin for Unified (markdown)

[thescientist13]

As observed in #554 in support of #529, when using a custom element in markdown

# My Page

<my-component></my-component>

It will come out wrapped in a <p> tag,

<h1>My Page</h1>

<p>
  <my-component></my-component>
</p>

It was necessary to "unwrap" these when serializing with puppeteer or else we got duplicate light / shadow dom rendering, like we had observed in #433.

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So the thought here is, make a unified plugin for this and use a parser instead. (unless there is a better solution to this problem?)

[thescientist13]

Transferred here - #1267