export interface ProcessNode {
    pid: number;
    ppid: number;
    image: string;
}
export interface KillTreeOptions {
    /** Image names (case-insensitive) to keep alive, with their subtrees. */
    excludeImages?: string[];
    /** Grace period (ms) before escalating to a force kill. 0 = force at once. */
    graceMs?: number;
    /** Optional sink for the "kept alive" / degraded warnings. */
    log?: (message: string) => void;
}
export interface KillTreeResult {
    /** PIDs we asked the OS to terminate (root included). */
    kill: number[];
    /** Browser PIDs deliberately left running. */
    kept: ProcessNode[];
    /** True when the tree could not be enumerated (root-only fallback). */
    degraded: boolean;
}
/** Browser images the bridge never terminates (the human closes them). */
export declare const DEFAULT_EXCLUDE_IMAGES: string[];
/** Parse `Get-CimInstance Win32_Process | ConvertTo-Json` output. */
export declare function parseWindowsProcessJson(raw: string): ProcessNode[];
/** Parse `ps -Ao pid=,ppid=,comm=` output. */
export declare function parsePosixProcessList(raw: string): ProcessNode[];
/**
 * Pure selector: the root plus every descendant, minus excluded images and
 * their subtrees. Split out so the safety rule is unit-testable.
 */
export declare function selectProcessesToKill(nodes: ProcessNode[], rootPid: number, excludeImages?: string[]): {
    kill: number[];
    kept: ProcessNode[];
};
/** Enumerate every process on this machine (null when unsupported/unavailable). */
export declare function listProcessTree(): ProcessNode[] | null;
/**
 * Kill a process and its descendants, but never a browser.
 *
 * @returns which PIDs were killed / deliberately kept, and whether the tree
 *          could not be enumerated (root-only fallback).
 */
export declare function killTreeExcept(rootPid: number, opts?: KillTreeOptions): KillTreeResult;