refactored data-types to reduce plugin sizes

operator-filter.go

@@ -9,6 +9,7 @@ import (
 
 	"git.portale-stac.it/go-pkg/expr/kern"
 	"git.portale-stac.it/go-pkg/expr/scan"
+	"git.portale-stac.it/go-pkg/expr/types/boolean"
 )
 
 //-------- map term
@@ -117,7 +118,7 @@ func (it *filterIterator) Next() (item any, err error) {
 		ctx.DeleteVar("_")
 
 		if err == nil {
-			if success, valid := kern.ToBool(result); valid {
+			if success, valid := boolean.ToBool(result); valid {
 				if success {
 					item = attempt
 					break