import type { Bool, Bytes, Option, Struct, Text, u32 } from '@polkadot/types';
import type { H256 } from '@polkadot/types/interfaces';
import type { HexString } from '../../common';
export declare class PayloadFilter {
    readonly offset: number;
    readonly pattern: Uint8Array;
    constructor(pattern: HexString | Uint8Array, offset?: number);
    toJSON(): {
        pattern: number[];
        offset: number;
    };
}
export interface UserMessageSentSubscriptionFilter {
    source?: HexString;
    destination?: HexString;
    payloadFilters?: PayloadFilter[];
    fromBlock?: number | bigint;
    finalizedOnly?: boolean;
}
export interface UserMessageSentSubscriptionItem {
    readonly id: HexString;
    readonly block: HexString;
    readonly index: number;
    readonly source: HexString;
    readonly destination: HexString;
    readonly payload: HexString;
    readonly value: bigint;
    reply?: UserMessageSentSubscriptionReplyDetails;
}
export interface UserMessageSentSubscriptionReplyDetails {
    readonly to: HexString;
    readonly code: HexString;
    readonly codeDescription: string;
}
export interface UserMessageReplyJson extends Struct {
    readonly to: H256;
    readonly code: Bytes;
    readonly codeDescription: Text;
}
export interface UserMessageSentSubItem extends Struct {
    readonly block: H256;
    readonly index: u32;
    readonly id: H256;
    readonly source: H256;
    readonly destination: H256;
    readonly payload: Bytes;
    readonly value: Text;
    readonly reply?: Option<UserMessageReplyJson>;
    readonly ack: Option<Bool>;
}