Type annotation that worked in v11 now gives error Did you mean to annotate the parameter type or the return type? #7862
Description
In v11, the following compiles fine:
let f = (): array<nullable<int>> => { [] }but from v12.0.0-alpha.13 onwards it gives this error:
Did you mean to annotate the parameter type or the return type? 1) (pattern): array<nullable<int>> => { [] } 2) (pattern: array<nullable<int>>) => { [] }