Prism <code> class is wrong?

[distantcompany]

I'm new to both Stackedit and Prism, but this doesn't seem right to me.

I have several json code blocks in my content. Example:

```json
    {
    	"foo": "bar",
    	"email": "test@test.com",
    	"hello": "world",
    }
 ``

(*third tick omitted to prevent github from interpreting the code block...)

I've included Prism into my template via CDN:

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/themes/prism-tomorrow.min.css" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/prism.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/prism/1.29.0/components/prism-json.min.js"></script>

Stackedit keeps outputting this:

<pre class=" language-json"><code class="prism language-json">

Prism isn't picking this up. But if remove prism from that code class attribute, it kicks in and works as expected. Or I can just remove the last letter (ex. pris)...anything to get the explicit value of prism out of there does the trick.

What am I missing here? I'm guessing that's not proper Prism syntax? If not, why is Stackedit putting that there? Am I causing this somehow in my config?

For now, I'm working around it with:

<script>
  document.querySelectorAll('[class*="prism"]').forEach(element => {
    element.classList.remove('prism');
  });
</script>

...and that works fine. But curious if I should have to do this.