package node.perf_hooks; typedef NodeGCPerformanceDetail = { /** When `performanceEntry.entryType` is equal to 'gc', `the performance.kind` property identifies the type of garbage collection operation that occurred. See perf_hooks.constants for valid values. **/ @:optional final kind : Float; /** When `performanceEntry.entryType` is equal to 'gc', the `performance.flags` property contains additional information about garbage collection operation. See perf_hooks.constants for valid values. **/ @:optional final flags : Float; };