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-rw-r--r--js/src/builtin/ModuleObject.cpp6
-rw-r--r--js/src/jit-test/tests/modules/import-namespace.js3
2 files changed, 7 insertions, 2 deletions
diff --git a/js/src/builtin/ModuleObject.cpp b/js/src/builtin/ModuleObject.cpp
index f13a2b78a..444d8962d 100644
--- a/js/src/builtin/ModuleObject.cpp
+++ b/js/src/builtin/ModuleObject.cpp
@@ -464,8 +464,10 @@ ModuleNamespaceObject::ProxyHandler::get(JSContext* cx, HandleObject proxy, Hand
ModuleEnvironmentObject* env;
Shape* shape;
- if (!ns->bindings().lookup(id, &env, &shape))
- return false;
+ if (!ns->bindings().lookup(id, &env, &shape)) {
+ vp.setUndefined();
+ return true;
+ }
RootedValue value(cx, env->getSlot(shape->slot()));
if (value.isMagic(JS_UNINITIALIZED_LEXICAL)) {
diff --git a/js/src/jit-test/tests/modules/import-namespace.js b/js/src/jit-test/tests/modules/import-namespace.js
index 2094c27fe..0287f7a60 100644
--- a/js/src/jit-test/tests/modules/import-namespace.js
+++ b/js/src/jit-test/tests/modules/import-namespace.js
@@ -45,6 +45,9 @@ b.evaluation();
testHasNames(getModuleEnvironmentNames(b), ["ns", "x"]);
let ns = getModuleEnvironmentValue(b, "ns");
testHasNames(Object.keys(ns), ["a", "b"]);
+assertEq(ns.a, 1);
+assertEq(ns.b, 2);
+assertEq(ns.c, undefined);
assertEq(getModuleEnvironmentValue(b, "x"), 3);
// Test module namespace internal methods as defined in 9.4.6