import { Boom } from '@hapi/boom';
import { AuthenticationState, ChatModification } from "../Types";
import { proto } from '../WAProto';
export declare const encodeSyncdPatch: (action: ChatModification, lastMessageKey: proto.IMessageKey, { creds: { appStateSyncKeys: [key], appStateVersion } }: AuthenticationState) => proto.ISyncdPatch;
export declare const decodeSyncdPatch: (msg: proto.ISyncdPatch, { creds }: AuthenticationState) => {
    mutations: {
        action: proto.ISyncActionValue;
        index: [string, string];
    }[];
    failures: Boom<any>[];
};