import 'rxjs/add/observable/throw';
import 'rxjs/add/operator/startWith';
import 'rxjs/add/operator/withLatestFrom';
import { Observable } from 'rxjs/Observable';
import { OperatorFunction } from 'rxjs/interfaces';
import { Omit } from '../utils';
export declare type PageToken = string & {
    kind: 'PageToken';
};
export declare const emptyPageToken: PageToken;
export declare enum Kind {
    PageCount = "PageCount",
    PageToken = "PageToken"
}
export declare type CommonState<T = {}> = {
    kind: Kind;
    urlPath: string;
    pageSize: number;
    urlQuery?: {};
    result: T[];
    nextPage: number;
    hasMore: boolean;
    limit: number;
};
export declare type PageCountState<T = {}> = CommonState<T> & {
    kind: Kind.PageCount;
};
export declare type PageTokenState<T = {}> = CommonState<T> & {
    kind: Kind.PageToken;
    nextPageToken: PageToken;
    totalSize?: number;
};
export declare type State<T = {}> = PageTokenState<T>;
export declare type PolyState<T = {}> = PageCountState<T> | PageTokenState<T>;
export declare type StateOptions = {
    kind?: Kind;
    pageSize?: number;
    urlQuery?: {};
};
export declare type InitOptions<T extends {} = {}> = Omit<StateOptions, 'kind'> & {
    urlQuery?: T;
};
export declare type Update<T> = {
    patch?: T[];
    limit?: number;
};
export declare function defaultState<T>(urlPath: string, options: StateOptions & {
    kind: Kind.PageCount;
}): PageCountState<T>;
export declare function defaultState<T>(urlPath: string): PageTokenState<T>;
export declare function defaultState<T>(urlPath: string, options: Omit<StateOptions, 'kind'>): PageTokenState<T>;
export declare function defaultState<T>(urlPath: string, options: StateOptions & {
    kind: Kind.PageToken;
}): PageTokenState<T>;
export declare function defaultState<T>(urlPath: string, options: StateOptions): PolyState<T>;
export declare function queryInfo<T>(state: CommonState<T>): Update<T>;
export declare type OriginalResponse<T> = {
    nextPageToken: PageToken;
    result: T[];
    totalSize?: number;
};
export declare function accUpdate<T>(state: PageCountState<T>, resp: T[]): PageCountState<T>;
export declare function accUpdate<T>(state: PageTokenState<T>, resp: OriginalResponse<T>): PageTokenState<T>;
export declare function accUpdate<T>(state: PolyState<T>, resp: OriginalResponse<T> | T[]): PolyState<T>;
export declare function accConcat<T>(state: PageCountState<T>, resp: T[]): PageCountState<T>;
export declare function accConcat<T>(state: PageTokenState<T>, resp: OriginalResponse<T>): PageTokenState<T>;
export declare function accConcat<T>(state: PolyState<T>, resp: OriginalResponse<T> | T[]): PolyState<T>;
export declare function expand<T>(step: (curr: PageCountState<T>) => Observable<T[]>, accumulate: (state: PageCountState<T>, resp: T[]) => PageCountState<T>, initState: PageCountState<T>): OperatorFunction<{}, Observable<PageCountState<T>>>;
export declare function expand<T>(step: (curr: PageTokenState<T>) => Observable<OriginalResponse<T>>, accumulate: (state: PageTokenState<T>, resp: OriginalResponse<T>) => PageTokenState<T>, initState: PageTokenState<T>): OperatorFunction<{}, Observable<PageTokenState<T>>>;
export declare function expand<T>(step: ((curr: PolyState<T>) => Observable<unknown>), accumulator: (state: PolyState<T>, resp: any) => PolyState<T>, initState: PolyState<T>): OperatorFunction<{}, Observable<PolyState<T>>>;