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-rw-r--r--src/bun.js/bindings/JSBuffer.cpp4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/bun.js/bindings/JSBuffer.cpp b/src/bun.js/bindings/JSBuffer.cpp
index 87ce722f2..b5a88dc10 100644
--- a/src/bun.js/bindings/JSBuffer.cpp
+++ b/src/bun.js/bindings/JSBuffer.cpp
@@ -644,7 +644,9 @@ static inline JSC::EncodedJSValue jsBufferConstructorFunction_concatBody(JSC::JS
static inline JSC::EncodedJSValue jsBufferConstructorFunction_isEncodingBody(JSC::JSGlobalObject* lexicalGlobalObject, JSC::CallFrame* callFrame)
{
auto& vm = JSC::getVM(lexicalGlobalObject);
- return JSValue::encode(jsUndefined());
+ auto encoding_ = callFrame->argument(0).toString(lexicalGlobalObject);
+ std::optional<BufferEncodingType> encoded = parseEnumeration<BufferEncodingType>(*lexicalGlobalObject, encoding_);
+ return JSValue::encode(jsBoolean(!!encoded));
}
static inline JSC::EncodedJSValue jsBufferConstructorFunction_toBufferBody(JSC::JSGlobalObject* lexicalGlobalObject, JSC::CallFrame* callFrame)