A Prettier feature that I love is that it formats files, but also code blocks in Markdown files. I wanted to customize the maximum line length and the tab size for the code in my articles, but not have the same option applied to the rest of my codebase.
There is a Prettier config option that is perfect for this: overrides. I can decide, for .md files, to apply some formatting options that will be used to format the code blocks (with supported Prettier languages) in my document.
// .prettierrc{ "overrides": [ { "files": ["*.md", "*.mdx"], "options": { // any prettier option "printWidth": 65, "useTabs": false, "tabWidth": 2 } } ]}