import type { MeritClient } from "../client/merit-client.js";
import type { MissingDoc } from "./types.js";
/** Split [from, to] into ≤3-month windows (Merit's list cap). */
export declare function quarterWindows(from: Date, to: Date): Array<{
    from: string;
    to: string;
}>;
/** List purchase invoices missing an attachment across [from, to]. */
export declare function auditPurchaseInvoices(client: MeritClient, from: Date, to: Date): Promise<MissingDoc[]>;
/** List sales invoices missing an attachment across [from, to] (opt-in). */
export declare function auditSalesInvoices(client: MeritClient, from: Date, to: Date): Promise<MissingDoc[]>;