import { Observable } from "rxjs";
import { LoadingState } from "./loading-state";
/**
 * Handles transitions between different loading state and holds the context data that is related to the current state.
 * @class LoadingStateMachine
 */
export declare class LoadingStateMachine<T> {
    private _state$;
    private _data;
    private _error;
    constructor();
    /**
     * Creates a new observable that represents the current state of the machine
     *
     * @returns {Observable<LoadingState>} Observable that emits the machine state
     */
    asObservable(): Observable<LoadingState>;
    /**
     * Data of the current state. Depending on the current state, this may be undefined.
     */
    get data(): T | undefined;
    /**
     * Error of the current state. Depending on the current state, this may be undefined.
     */
    get error(): any;
    /**
     * The current LoadingState
     */
    get state(): LoadingState;
    /**
     * Update data while in loading state
     * @param {T} newData
     */
    update(newData?: T): void;
    /**
     * Starts loading
     */
    start(): void;
    /**
     * Transition to success state
     * @param {T} data
     */
    succeed(data?: T): void;
    /**
     * Transition to error state
     * @param {any} error
     */
    fail(error: any): void;
    /**
     * Resets machine to not started
     */
    reset(): void;
    /**
     * @returns {Boolean} True if machine if loading has not been started or reset
     */
    isNotStarted(): boolean;
    /**
     * @returns {Boolean} True if machine is in loading state
     */
    isLoading(): boolean;
    /**
     *
     * @returns {Boolean} True if machine is in error state
     */
    isError(): boolean;
    /**
     * @returns {Boolean} True if machine is in success state
     */
    isSuccess(): boolean;
    /**
     * Factory to create a new machine in error state
     * @param {any} error
     * @returns {LoadingStateMachine<T>} The new LoadingStateMachine
     */
    static asError<T>(error: any): LoadingStateMachine<T>;
    /**
     * Factory to create a new machine in success state
     * @param {T} data
     * @returns {LoadingStateMachine<T>} The new LoadingStateMachine
     */
    static asSuccess<T>(data: T): LoadingStateMachine<T>;
    /**
     * Factory to create a new machine in loading state
     * @param {T | undefined} data
     * @returns {LoadingStateMachine<T>} The new LoadingStateMachine
     */
    static asLoading<T>(data?: T | undefined): LoadingStateMachine<T>;
}