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- declare module "v8" {
- import { Readable } from "stream";
-
- interface HeapSpaceInfo {
- space_name: string;
- space_size: number;
- space_used_size: number;
- space_available_size: number;
- physical_space_size: number;
- }
-
- // ** Signifies if the --zap_code_space option is enabled or not. 1 == enabled, 0 == disabled. */
- type DoesZapCodeSpaceFlag = 0 | 1;
-
- interface HeapInfo {
- total_heap_size: number;
- total_heap_size_executable: number;
- total_physical_size: number;
- total_available_size: number;
- used_heap_size: number;
- heap_size_limit: number;
- malloced_memory: number;
- peak_malloced_memory: number;
- does_zap_garbage: DoesZapCodeSpaceFlag;
- }
-
- function getHeapStatistics(): HeapInfo;
- function getHeapSpaceStatistics(): HeapSpaceInfo[];
- function setFlagsFromString(flags: string): void;
- /**
- * Generates a snapshot of the current V8 heap and returns a Readable
- * Stream that may be used to read the JSON serialized representation.
- * This conversation was marked as resolved by joyeecheung
- * This JSON stream format is intended to be used with tools such as
- * Chrome DevTools. The JSON schema is undocumented and specific to the
- * V8 engine, and may change from one version of V8 to the next.
- */
- function getHeapSnapshot(): Readable;
-
- /**
- *
- * @param fileName The file path where the V8 heap snapshot is to be
- * saved. If not specified, a file name with the pattern
- * `'Heap-${yyyymmdd}-${hhmmss}-${pid}-${thread_id}.heapsnapshot'` will be
- * generated, where `{pid}` will be the PID of the Node.js process,
- * `{thread_id}` will be `0` when `writeHeapSnapshot()` is called from
- * the main Node.js thread or the id of a worker thread.
- */
- function writeHeapSnapshot(fileName?: string): string;
- }
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