import { type Selectable } from 'kysely';
import type * as Db from '../Db.js';
import type * as db_Schema from '../Schema.js';
/** Columns of the `routes_transfer_subsidy_nonces` table. */
export type Table = db_Schema.RoutesTransferSubsidyNonce;
/** One persisted destination signer nonce cursor. */
export type Record = Selectable<Table>;
type Lane = {
    /** Destination subsidy signer address. */
    account: string;
    /** Destination EVM chain CAIP-2 id. */
    chainId: string;
};
/** Locks a signer lane and rejects new work when its nonce cannot be recovered. */
export declare function lockAvailableIn(db: Db.Db, options: Lane): Promise<void>;
/** Blocks a signer lane after a reserved nonce is permanently rejected. */
export declare function block(db: Db.Db, options: block.Options): Promise<void>;
/** Blocks a signer lane inside a caller-owned transaction. */
export declare function blockIn(db: Db.Db, options: block.Options): Promise<void>;
export declare namespace block {
    /** Signer lane and permanent rejection evidence. */
    type Options = Lane & {
        /** Bounded reason for blocking the signer lane. */
        reason: 'broadcast_rejected';
        /** Transfer holding the rejected nonce. */
        transferId: string;
    };
}
/** Reserves one nonce under a transaction-scoped signer and chain lock. */
export declare function reserve(db: Db.Db, options: reserve.Options): Promise<number>;
/** The signer lane is blocked by an unrecoverable reserved nonce. */
export declare class BlockedError extends Error {
    name: string;
}
/** A rejected subsidy transaction had no persisted nonce cursor. */
export declare class MissingCursorError extends Error {
    name: string;
}
export declare namespace reserve {
    /** Signer and chain cursor used to reserve one nonce. */
    type Options = {
        /** Destination subsidy signer address. */
        account: string;
        /** Destination EVM chain CAIP-2 id. */
        chainId: string;
        /** Next nonce observed from the pending RPC state. */
        pendingNonce: number;
    };
}
export {};
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