This may be non-standard because the Prettier ignore docs don't mention it, but Prettier supports putting the // prettier-ignore comment on the same line as the code you want ignored (example). Oxfmt supports this on the line before (#14808), but not on the same line. I think it would be perfectly reasonable to close this as a wontfix — just wanted to flag it in case full compatibility is the goal. This is the source of like 95% of the diff vs. Prettier when I tried oxfmt just now on the oxidecomputer/console codebase.