diff options
| -rw-r--r-- | src/bun.js/bindings/webcore/JSFetchHeaders.cpp | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/bun.js/bindings/webcore/JSFetchHeaders.cpp b/src/bun.js/bindings/webcore/JSFetchHeaders.cpp index af4d68fe7..2c83778a2 100644 --- a/src/bun.js/bindings/webcore/JSFetchHeaders.cpp +++ b/src/bun.js/bindings/webcore/JSFetchHeaders.cpp @@ -172,7 +172,10 @@ template<> void JSFetchHeadersDOMConstructor::initializeProperties(VM& vm, JSDOM JSC_DEFINE_CUSTOM_GETTER(jsFetchHeadersGetterCount, (JSC::JSGlobalObject * globalObject, JSC::EncodedJSValue thisValue, JSC::PropertyName)) { auto& vm = JSC::getVM(globalObject); - JSFetchHeaders* castedThis = jsCast<JSFetchHeaders*>(JSValue::decode(thisValue)); + JSFetchHeaders* castedThis = jsDynamicCast<JSFetchHeaders*>(JSValue::decode(thisValue)); + if (UNLIKELY(!castedThis)) { + return JSValue::encode(jsUndefined()); + } auto& impl = castedThis->wrapped(); auto count = impl.size(); @@ -193,7 +196,7 @@ static const HashTableValue JSFetchHeadersPrototypeTableValues[] = { { "values"_s, static_cast<unsigned>(JSC::PropertyAttribute::Function), NoIntrinsic, { HashTableValue::NativeFunctionType, jsFetchHeadersPrototypeFunction_values, 0 } }, { "forEach"_s, static_cast<unsigned>(JSC::PropertyAttribute::Function), NoIntrinsic, { HashTableValue::NativeFunctionType, jsFetchHeadersPrototypeFunction_forEach, 1 } }, { "toJSON"_s, static_cast<unsigned>(JSC::PropertyAttribute::Function), NoIntrinsic, { HashTableValue::NativeFunctionType, jsFetchHeadersPrototypeFunction_toJSON, 0 } }, - { "count"_s, static_cast<unsigned>(JSC::PropertyAttribute::CustomAccessor | JSC::PropertyAttribute::ReadOnly | JSC::PropertyAttribute::DontEnum), NoIntrinsic, { HashTableValue::GetterSetterType, jsFetchHeadersGetterCount, 0 } }, + { "count"_s, static_cast<unsigned>(JSC::PropertyAttribute::CustomAccessor | JSC::PropertyAttribute::ReadOnly | JSC::PropertyAttribute::DontDelete | JSC::PropertyAttribute::DontEnum), NoIntrinsic, { HashTableValue::GetterSetterType, jsFetchHeadersGetterCount, 0 } }, }; const ClassInfo JSFetchHeadersPrototype::s_info = { "Headers"_s, &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSFetchHeadersPrototype) }; |