export declare const DRAIN_BATCH_MAX = 10;
export declare const DRAIN_REQUEST_TIMEOUT_MS = 3000;
export declare const DRAIN_BUDGET_MS = 10000;
export declare const SPOOL_MAX_AGE_MS: number;
export declare const SENDING_STALE_MS: number;
export declare const SENDING_EXT = ".sending";
export declare const CLI_EVENTS_PATH = "/cli/events";
export interface DrainDeps {
    spoolDir: string;
    home: string;
    env: Record<string, string | undefined>;
    now: () => number;
    fetchFn: typeof fetch;
}
export interface DrainResult {
    sent: number;
    kept: number;
    dropped: number;
}
export declare function drainOnce(deps: DrainDeps): Promise<DrainResult>;