• {number}

    This property is an extension by Node.js. It is not available in Web browsers.

    When performanceEntry.entryType is equal to 'gc', the performance.kind property identifies the type of garbage collection operation that occurred. The value may be one of:

    • perf_hooks.constants.NODE_PERFORMANCE_GC_MAJOR
    • perf_hooks.constants.NODE_PERFORMANCE_GC_MINOR
    • perf_hooks.constants.NODE_PERFORMANCE_GC_INCREMENTAL
    • perf_hooks.constants.NODE_PERFORMANCE_GC_WEAKCB