nameof — the name of a named type
nameof(val: any) -> string
The nameof function returns the type name of val as a string if val is a named type.
Otherwise, it returns error("missing").
A named type yields its name and unnamed types yield a missing error:
echo '80(port=int16) 80' | super -z -c 'yield nameof(this)' -
=>
"port"
error("missing")
The missing value can be ignored with quiet:
echo '80(port=int16) 80' | super -z -c 'yield quiet(nameof(this))' -
=>
"port"