diff --git a/internal/nullable/nullable.go b/internal/nullable/nullable.go
new file mode 100644
index 0000000..15b7abe
--- /dev/null
+++ b/internal/nullable/nullable.go
@@ -0,0 +1,26 @@
+package nullable
+
+type nullable interface {
+	bool | int | string
+}
+
+type Value[T nullable] struct {
+	value T
+	isSet bool
+}
+
+func Null[T nullable]() Value[T] {
+	var null T
+	return Value[T]{null, false}
+}
+
+func From[T nullable](value T) Value[T] {
+	return Value[T]{value, true}
+}
+
+func FromPtr[T nullable](ptr *T) Value[T] {
+	if ptr == nil {
+		return Null[T]()
+	}
+	return From[T](*ptr)
+}