Using only the to-markdown components of remark-gfm/mdast-util-gfm

[Mr0grog]

This might be a pretty narrow use case, but I was curious about support for using using just the to markdown components of remark-gfm or mdast-util-gfm (since by default it sets up both the from and to components). Mainly what I’m concerned about here is byte size in my JS bundle — including just the gfmToMarkdown component of mdast-util-gfm saves 23 KB in my production JS bundle (about 20% of the overall bundle size at the moment).

Due to the way things are set up right now, the best way I can figure to do this makes me kind of unhappy:

const processor = unified()
  .use(function () {
    // This feels like reaching down into weird implementation details...
    const data = this.data();
    data.toMarkdownExtensions ||= [];
    data.toMarkdownExtensions.push(gfmToMarkdown());
  })
  .use(remarkStringify, {
    // I naively tried setting `extensions: [gfmToMarkdown()]` here
    // before realizing that option gets overridden.
  });

First off, I’d love to know if I’m missing something obvious and there’s a more correct way to do this. Some of the constraints I was hoping to adhere to are:

• I’d like to use mdast-util-gfm instead of the individual feature extensions if possible, so I don’t have to keep up with new packages being added or removed for GFM.
• It seems good to be using remark-stringify instead of mdast-util-to-markdown since that’s the recommended approach, and it does some work to make integration with other plugins just work.

Otherwise, am I worrying to much about these constraints? Should I just use mdast-util-to-markdown so I can register extensions directly in its options, and not worry about what I might be missing from remark-stringify?

Or would it be reasonable to change one of the involved packages to make this kind of usage easier? (Maybe remark-stringify could merge an extensions array you pass in directly with the stuff it grabs from toMarkdownExtensions? Or maybe remark-gfm could have a function to register only the to or only the from Markdown extensions, enabling tree shaking when bundling?

[Mr0grog]

Whoops, just realized this should be in the Remark discussion board. Apologies; I didn’t understand the link structure when I first clicked through on the support doc.

I’ll close this and re-ask the question over there.