diff --git a/src/transformation/utils/export.ts b/src/transformation/utils/export.ts
index fa1c03649..f0ef437e5 100644
--- a/src/transformation/utils/export.ts
+++ b/src/transformation/utils/export.ts
@@ -20,6 +20,14 @@ export function hasExportModifier(node: ts.Node): boolean {
);
}
+export function shouldBeExported(node: ts.Node): boolean {
+ if (hasExportModifier(node)) {
+ // Don't export if we're inside a namespace (module declaration)
+ return ts.findAncestor(node, ts.isModuleDeclaration) === undefined;
+ }
+ return false;
+}
+
export const createDefaultExportStringLiteral = (original?: ts.Node): lua.StringLiteral =>
lua.createStringLiteral("default", original);
diff --git a/src/transformation/visitors/class/index.ts b/src/transformation/visitors/class/index.ts
index 0edfce050..d4633995e 100644
--- a/src/transformation/visitors/class/index.ts
+++ b/src/transformation/visitors/class/index.ts
@@ -5,8 +5,8 @@ import {
createDefaultExportExpression,
createExportedIdentifier,
hasDefaultExportModifier,
- hasExportModifier,
isSymbolExported,
+ shouldBeExported,
} from "../../utils/export";
import { createSelfIdentifier } from "../../utils/lua-ast";
import { createSafeName, isUnsafeName } from "../../utils/safe-names";
@@ -214,7 +214,7 @@ function transformClassLikeDeclaration(
const decoratingStatement = lua.createAssignmentStatement(localClassName, decoratingExpression);
result.push(decoratingStatement);
- if (hasExportModifier(classDeclaration)) {
+ if (shouldBeExported(classDeclaration)) {
const exportExpression = hasDefaultExportModifier(classDeclaration)
? createDefaultExportExpression(classDeclaration)
: createExportedIdentifier(context, className);
diff --git a/test/unit/classes/decorators.spec.ts b/test/unit/classes/decorators.spec.ts
index 1923f8b2b..4782746be 100644
--- a/test/unit/classes/decorators.spec.ts
+++ b/test/unit/classes/decorators.spec.ts
@@ -138,7 +138,7 @@ test("Exported class decorator", () => {
});
// https://github.com/TypeScriptToLua/TypeScriptToLua/issues/1149
-test("exported class with decorator", () => {
+test("exported class with decorator (#1149)", () => {
util.testModule`
import { MyClass } from "./other";
const inst = new MyClass();
@@ -164,6 +164,28 @@ test("exported class with decorator", () => {
.expectToEqual({ result: "overridden" });
});
+// https://github.com/TypeScriptToLua/TypeScriptToLua/issues/1634
+test("namespaced exported class with decorator (#1634)", () => {
+ util.testModule`
+ function myDecorator(target: {new(): any}, context: ClassDecoratorContext) {
+ return class extends target {
+ foo() {
+ return "overridden";
+ }
+ }
+ }
+
+ namespace ns {
+ @myDecorator
+ export class MyClass {
+ foo() {
+ return "foo";
+ }
+ }
+ }
+ `.expectNoExecutionError();
+});
+
test("default exported class with decorator", () => {
util.testModule`
import MyClass from "./other";
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