import { Debug } from '@jacobbubu/debug';
import * as pull from 'pull-stream';
import { AsyncModelStoreBase } from './async-model-store.interface';
export declare type SourceId = string;
export declare type Timestamp = number;
export declare type From = string;
export declare type Singed = string;
export interface ScuttlebuttOptions {
    id?: SourceId;
    createId?(): SourceId;
    sign?: boolean;
    verify?: boolean;
    accept?: any;
    logger?: Debug;
}
export interface AsyncModelOptions extends ScuttlebuttOptions {
    store?: AsyncModelStoreBase;
}
export interface StreamOptions {
    readable?: boolean;
    writable?: boolean;
    tail?: boolean;
    name?: string;
    clock?: Sources;
    sendClock?: boolean;
    wrapper?: string | Serializer;
    meta?: any;
}
export interface Sources {
    [sourceId: string]: Timestamp;
}
export declare enum UpdateItems {
    Data = 0,
    Timestamp = 1,
    SourceId = 2,
    From = 3,
    Singed = 4
}
export interface Serializer {
    serialize: <In, Out>() => pull.Through<In, Out>;
    parse: <In, Out>() => pull.Through<In, Out>;
}
export declare type Update = [any, Timestamp, SourceId, From?, Singed?];
export declare type Verify = (update: Update) => boolean;
export declare type Sign = (update: Update) => string;