Add remark-d2 to list of plugins

[mech-a]

Initial checklist

• I read the support docs
• I read the contributing guide
• I agree to follow the code of conduct
• I searched issues and couldn’t find anything (or linked relevant results below)
• If applicable, I’ve added docs and tests

Description of changes

I've made a plugin, remark-d2, that makes it so you can turn d2 code blocks into their compiled images. d2 is a fast-to-develop and easy diagramming language, so I think it would be a good addition to the list. They also have a website where you can compare d2 code to other diagramming tools like Mermaid, PlantUML, and others.

I'm not affiliated with d2 in any way, in case that is of concern.

[codecov-commenter]

Codecov Report

Patch and project coverage have no change.

Comparison is base (1c6e5ba) 100.00% compared to head (6cc37a3) 100.00%.

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Additional details and impacted files

@@            Coverage Diff            @@
##              main     #1197   +/-   ##
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  Coverage   100.00%   100.00%           
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  Files           10        10           
  Lines          874       874           
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  Hits           874       874           

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[wooorm]

Hi! Some tips on how to improve your plugin:

• You don’t need 'use strict' in ESM, they are always strict
• Instead of using node:path, I recommend using URLs, they work across platforms (unix vs windows)
• Throw errors instead of printing to console.error when things are misconfigured
• You don’t need to path.parse(file.path), file already has direname and other fields
• replace process.cwd() with file.cwd, files can theoretically exist with multiple, different, “cwds”
• Use async versions of fs calls, the transformer can be async
• an exists call before a mkdir or write call is an anti-pattern, instead, try to mkdir or write, and swallow the error if it already exists
• do not change node.type, instead, replace one node with another, some more info here: https://unifiedjs.com/learn/recipe/remove-node/#removing-a-node
• It is probably better to do async work instead of spawn, so that when many files are processed, or many code blocks exist, work can be done at the same time
• What is the benefit of the HTML version? What can it do more than the markdown version? If there are no benefits, I recommend removing it, because raw strings of HTML don’t always work well with markdown, particularly when dealing with VDOM frameworks like React, such as MDX. There are also perhaps openings for XSS attacks, or at least bugs, when building a string of HTML like you do now, instead of using something like hastscript and hast-util-to-html!

[mech-a]

Thank you for this feedback. I'll integrate your feedback where applicable and reply back.

[wooorm]

how’s it going with the feedback?

[wooorm]

Ping! :)

[wooorm]

Closing for now. Feel free to PR again, thanks!