fix(js_formatter): fix function parameter grouping heuristic checking type parameters #1153
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Summary
Playground Link.
This was a minor bug that only shows up two times in our entire monorepo: when a function declaration has a single generic type parameter, the parameters for that function sometimes end up getting grouped so that they prefer to break before the return type for the function does. If the parameter has a constraint (
extends ...
) or a default value (= DefaultType
), then the parameters don't group, but if neither are present, then the parameters might group based on further heuristics.However, the logic here had the constraint checked flipped from
is_some()
tois_none()
, meaning the inverse was happening, as seen in the playground.Test Plan
There was a prettier diff snapshot that I didn't even notice covering this case, but that's deleted now since the output matches.