vs:types -- vonuvoli Export (vonuvoli types positive)
null?;void?;undefined?;boolean?;true?;false?;number?;complex?;real?;rational?;integer?;char?;symbol?;keyword?;unique?;string?;string-immutable?;string-mutable?;bytevector?;bytevector-immutable?;bytevector-mutable?;string-regex?;bytevector-regex?;pair?;pair-immutable?;pair-mutable?;vector?;vector-immutable?;vector-mutable?;values?;record-type?;record?;record-immutable?;record-mutable?;procedure?;syntax?;port?;eof-object?;path?;process?;context?;binding?;parameters?;parameter?;promise?;resource?;internal?;opaque?;