Steps

pnpm i

pnpm lint-md

# Does
# pnpm eslint . --ext mdx

Will tap into .remarkrc.mjs

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mv .remarkrc.mjs .remarkrc.js

Or .cjs, changing to "type": "module"…

Same problem: cosmic config will not accept ESM remark config it seems.

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pnpm lint-mdx

# Does
# pnpm remark .

Will tap into .remarkrc.yaml

ESLint won't scan for mjs at all we use YAML (or JSON) here.