Refactored code structure

src/build/errors/Base.go

@@ -0,0 +1,11 @@
+package errors
+
+// Base is the base class for errors that have no parameters.
+type Base struct {
+	Message string
+}
+
+// Error generates the string representation.
+func (err *Base) Error() string {
+	return err.Message
+}