Weird formatting when using curried function as a return value (in external)

[bobzhang]

external useUpdateAtom: (t<'value, 'setValue>) => (. 'value) => unit = "useUpdateAtom"

is formatted into

external useUpdateAtom: (t<'value, 'setValue>, . 'value) => unit = "useUpdateAtom"

[jfrolich]

Possible dupe of https://github.com/rescript-lang/syntax/issues/259?

[stale[bot]]

The rescript-lang/syntax repo is obsolete and will be archived soon. If this issue is still relevant, please reopen in the compiler repo (https://github.com/rescript-lang/rescript-compiler) or comment here to ask for it to be moved. Thank you for your contributions.