import { Observable } from 'rxjs';
import { SpinnerServiceInterface } from './spinner-service.interface';
import * as i0 from "@angular/core";
export declare class SpinnerService implements SpinnerServiceInterface {
    /**
     * Application environment variable from the root application
     */
    private appEnv;
    /**
     * Observable subject of spinner service
     */
    private spinnerSubject;
    /**
     * Spinner is visible or not
     */
    private spinnerIsVisible;
    /**
     * Starter value of spinner service
     */
    private starter;
    constructor();
    /**
     * You can subscribe to the spinner service observable subject to react the spinner's change.
     */
    watch(): Observable<any>;
    /**
     * Spinner can be on or off. This function do all things to change the spinner's state.
     *
     * @param state `on` or `off`
     * @param starter any unique random string to avoid multiple spinners show
     */
    private setStatus;
    /**
     * Set values of spinner & emit observers.
     *
     * @param isVisible boolean
     * @param starter string
     */
    private setValues;
    /**
     * Switch on the spinner.
     *
     * @param starter string - any random, unique string could be good
     */
    on(starter: string): boolean;
    /**
     * Switch off the spinner.
     *
     * @param starter string - same string what you used on `on()` function.
     */
    off(starter: string): boolean;
    /**
     * You can get the current state of the spinner.
     */
    getStatus(): boolean;
    static ɵfac: i0.ɵɵFactoryDeclaration<SpinnerService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<SpinnerService>;
}
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