Change Request: Move the language option to settings.language.

[m1rn]

Environment

Node version: v22.1.0
npm version: v10.7.0
Local ESLint version: v9.9.1 (Currently used)
Global ESLint version: Not found
Operating System: win32 10.0.22631

What problem do you want to solve?

@eslint/markdown and @eslint/json both have a language option that needs to be defined within the ESLint configuration object. However, this property is not actually documented in the ESLint configuration object documentation, leading to editor complaints when using TypeScript. I would prefer that such custom fields be defined in settings, for example:

import markdown from '@eslint/markdown';

export default [
  {
    files: ['**/*.md'],
    plugins: {
      markdown,
    },
    rules: {
      'markdown/fenced-code-language': 2
    },
    processor: 'markdown/markdown',
    settings: {
      language: 'markdown/commonmark',
    }
  }
];

What do you think is the correct solution?

Participation

• I am willing to submit a pull request for this change.

Additional comments

No response

[nzakas]

This is the standard way ESLint switches languages. It's mentioned in the ESLint docs:
https://eslint.org/docs/latest/use/configure/plugins#specify-a-language

@types/eslint isn't actually maintained by us, that's why it's not there yet, but we can take a look to see if we can get it added.