export type ProcessTableEntry = {
    ppid: number;
    rss: number;
};
export type ProcessTable = Map<number, ProcessTableEntry>;
/** Parse a single `/proc/<pid>/status` blob (linux). VmRSS is reported in kB. */
export declare function parseLinuxStatus(statusText: string): ProcessTableEntry | null;
/** Parse `ps -A -o pid=,ppid=,rss=` output (macOS / posix). rss is reported in kB. */
export declare function parsePosixPsOutput(stdout: string): ProcessTable;
/** Parse `Get-CimInstance Win32_Process | ConvertTo-Json` output (windows). WorkingSetSize is bytes. */
export declare function parseWindowsCimJson(stdout: string): ProcessTable;
/** Sum rss (bytes) of `rootPid` and all transitive descendants. Cycle-safe. */
export declare function sumTreeRss(table: ProcessTable, rootPid: number): number;