import { BehaviorSubject } from 'rxjs';
/**
 * Represents a rxjs BehaviorSubject of the type boolean.
 * Additional ToggleSubject has the toggle Method to invert
 * the current value and emit the inverted value.
 * If the constructor value parameter is not specified the
 * default value is 'false'
 */
export declare class ToggleSubject extends BehaviorSubject<boolean> {
    private _onEnabledHandler;
    private _onDisabledHandler;
    constructor(value?: boolean);
    toggle(): void;
    enable(alwaysEmit?: boolean): void;
    disable(alwaysEmit?: boolean): void;
    next(value: boolean): void;
    registerOnEnabled(handler: () => any): void;
    registerOnDisabled(handler: () => any): void;
}