fix: order compact generated types

Author: meblum

element.go

@@ -198,7 +198,17 @@ func (e *element) writeGoType(w io.Writer, options *generateOptions, indentPrefi
 			case aExportedName < bExportedName:
 				return -1
 			case aExportedName == bExportedName:
-				return 0
+				// When exported names are equal, fall back to original XML element name
+				aOriginalName := options.exportNameFunc(a.name)
+				bOriginalName := options.exportNameFunc(b.name)
+				switch {
+				case aOriginalName < bOriginalName:
+					return -1
+				case aOriginalName == bOriginalName:
+					return 0
+				default:
+					return 1
+				}
 			default:
 				return 1
 			}

generator_test.go

@@ -854,12 +854,12 @@ func TestGenerator(t *testing.T) {
 			),
 			expectedStr: joinLines(
 				"type Root struct {",
-				"\tSingle struct {",
-				"\t\tValue string `xml:\"value\"`",
-				"\t} `xml:\"single\"`",
 				"\tMulti []struct {",
 				"\t\tValue string `xml:\"value\"`",
 				"\t} `xml:\"multi\"`",
+				"\tSingle struct {",
+				"\t\tValue string `xml:\"value\"`",
+				"\t} `xml:\"single\"`",
 				"}",
 			),
 		},
@@ -891,8 +891,8 @@ func TestGenerator(t *testing.T) {
 				"}",
 				"",
 				"type Root struct {",
-				"\tSingle Single  `xml:\"single\"`", //nolint:dupword
 				"\tMulti  []Multi `xml:\"multi\"`",
+				"\tSingle Single  `xml:\"single\"`", //nolint:dupword
 				"}",
 				"",
 				"type Single struct {",