Here is a list of all struct and union fields with links to the structures/unions they belong to:

- u -

• Uint32Value() : Value
• Uint64Value() : BigInt
• Undefined : Local< T >
• UNKNOWN_ENCODING : String
• Unlock() : String::ExternalStringResourceBase
• Unlocker() : Unlocker
• unmuteMetrics() : V8InspectorClient
• Unpack() : WasmStreaming
• unwrapObject() : V8InspectorSession
• UpdateDuration() : TraceObject
• UpdateNodeFlag() : Internals
• UpdateNodeState() : Internals
• UpdateOwner() : PersistentNode
• UpdateTraceEventDuration() : TracingController
• UseCounterCallback : Isolate
• UseCounterFeature : Isolate
• used_global_handles_size() : HeapStatistics
• used_heap_size() : HeapStatistics
• UseDefaultSecurityToken() : Context
• UseDetailedSourcePositionsForProfiling() : CpuProfiler
• user_data : JitCodeEvent
• UTF8 : ScriptCompiler::StreamedSource
• Utf8Length() : String
• Utf8Value() : String::Utf8Value
• Utils : Local< T > , Persistent< T, M > , PersistentBase< T >