frontmatter is targeted

Subject of the issue

Say I have a MDX file with this frontmatter:

---
title: Code Splitting
related:
  - title: <link rel="prefetch/preload" > in webpack
    url: https://medium.com/webpack/link-rel-prefetch-preload-in-webpack-51a52358f84c
---

Note that the <link > was not closed.

Now eslint would report Parsing error: Expected corresponding JSX closing tag for <link>. Which seems wrong to me. A related comment is here https://github.com/webpack/webpack.js.org/pull/5312#issuecomment-902705944.

Your environment

• OS:
• Packages:
• Env:

Steps to reproduce

1. clone https://github.com/webpack/webpack.js.org
2. open src/content/guides/code-splitting.mdx and replace the /> with > in the related part of frontmatter.

FYI, I’ve tried the latest version https://github.com/mdx-js/eslint-mdx/issues/334#issuecomment-898999220 with no luck.

Expected behaviour

No error.

Actual behaviour

An error was shown because frontmatter is targetted.

[JounQin]

@wooorm Does the plugins order matter? In eslint-mdx , it uses remark-mdx first then other user customed plugins.

---

OK, I find the problem, the custom remark config is only used for mdx/remark rule, this can be improved.

[JounQin]

@chenxsan

See https://github.com/mdx-js/eslint-mdx/issues/336#issuecomment-903066561, remark-frontmatter@2 is required.