接口 RuntimeStats实验性

interface RuntimeStats {
    arrayCount: number;
    atomCount: number;
    atomSize: number;
    fastArrayCount: number;
    fastArrayElementCount: number;
    functionCodeSize: number;
    functionCount: number;
    functionLineCount: number;
    functionSize: number;
    memoryAllocatedCount: number;
    memoryAllocatedSize: number;
    memoryUsedCount: number;
    memoryUsedSize: number;
    objectCount: number;
    objectSize: number;
    propertyCount: number;
    propertySize: number;
    stringCount: number;
    stringSize: number;
}