export interface CommandResult {
    stdout: string;
    stderr: string;
    exitCode: number;
}
export interface KillCommandTreeDeps {
    kill: (pid: number, signal: NodeJS.Signals) => boolean;
    execFileSync: (file: string, args: string[], options: {
        stdio: 'ignore';
        windowsHide: boolean;
    }) => unknown;
}
export declare function killCommandTree(pid: number, platform?: NodeJS.Platform, deps?: KillCommandTreeDeps): void;
export declare function spawnCommand(cmd: string, args: string[], timeoutMs: number, maxOutputBytes?: number): Promise<CommandResult>;
export declare function execBash(command: string, timeoutMs: number): Promise<CommandResult>;
export declare function execBashBackground(command: string): {
    pid: number | undefined;
};
/** Native supplies an already verified selection; never silently replace a stale selection. */
export declare function resolveBash(posixShell?: string): string | null;