v8.getHeapCodeStatistics()
- 返回：<Object>
获取有关堆中代码及其元数据的统计信息，请参见 V8 GetHeapCodeAndMetadataStatistics API。返回一个具有以下属性的对象：
【Get statistics about code and its metadata in the heap, see V8
GetHeapCodeAndMetadataStatistics API. Returns an object with the
following properties:】
code_and_metadata_size<number>bytecode_and_metadata_size<number>external_script_source_size<number>cpu_profiler_metadata_size<number>
{
code_and_metadata_size: 212208,
bytecode_and_metadata_size: 161368,
external_script_source_size: 1410794,
cpu_profiler_metadata_size: 0,
}