Character input is limited to canonical scalar tokens such as i32, f64,
and varchar. Composite, DECIMAL, ENUM, and UNION types are represented by
constructed rducks_type descriptors rather than quoted type strings.
Examples
rducks_type_normalize("i32")
#> [1] "i32"
rducks_type_normalize(INTEGER)
#> [1] "i32"
rducks_type_normalize(LIST(VARCHAR))
#> [1] "list<varchar>"