interface SecureHeapUsage Usageimport { type SecureHeapUsage } from "node:crypto"; Properties total: number The total allocated secure heap size as specified using the --secure-heap=n command-line flag. min: number The minimum allocation from the secure heap as specified using the --secure-heap-min command-line flag. used: number The total number of bytes currently allocated from the secure heap. utilization: number The calculated ratio of used to total allocated bytes.