/**
 * Task 1771 — what is still owed on one invoice.
 *
 * Every figure here is computed from the invoice's children at read time. None
 * of them is stored, which is why this tool and the census can never disagree
 * with each other about the same invoice.
 */
import type { Session } from "neo4j-driver";
import { type ReadFn } from "./payment-record.js";
import { type ToolResult } from "../lib/types.js";
export interface BalanceParams {
    session: Session;
    read: ReadFn;
    accountId: string;
    invoiceRef: string;
}
export declare function balance(params: BalanceParams): Promise<ToolResult>;
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