How can I change the line-wrapping tag of code block?

[HeekangPark]

It seems that Shiki parses the code block's content, and conducts syntax highlighting, while wrapping each line with <div class="line"> tags.

Here's my question.

1. Is there any method to change the line-wrapping tags? E.g., <div> to <span>?
2. Is there any method to change the class of line-wrapping tags? E.g., adding line index(<div class="line line-13">, for 13th line, for example)?

[nobkd]

1. Before, <span> tags were used to generate the lines, but they were replaced with divs for highlighted code blocks because of line breaks missing in Firefox when copying code by selection.
   See Copying code blocks from markdown removes new lines on Firefox #1883 and fix(code block): use <div> for Firefox code block line breaks #1885.
2. A line number class should be fairly easy to implement, as the line index is already used to set the line as highlighted.
   See this code.

I'll try to do a PR: #1973

[nobkd]

Oh, also, if you just want to highlight lines by default for one code block, you might want to look into this: https://content.nuxtjs.org/api/components/prose#prosecode
As you might see, the lines mentioned in {} get a highlight class