interface Deno.SystemMemoryInfo
          
Information returned from a call to Deno.systemMemoryInfo.
total: number
      
    Total installed memory in bytes.
free: number
      
    Unused memory in bytes.
available: number
      
    Estimation of how much memory, in bytes, is available for starting new applications, without swapping. Unlike the data provided by the cache or free fields, this field takes into account page cache and also that not all reclaimable memory will be reclaimed due to items being in use.
buffers: number
      
    Memory used by kernel buffers.
cached: number
      
    Memory used by the page cache and slabs.
swapTotal: number
      
    Total swap memory.
swapFree: number
      
    Unused swap memory.