import { IProvider, EventHandler } from './providers/IProvider';
export declare class Providers {
    private static _eventDispatcher;
    private static _globalProvider;
    static globalProvider: IProvider;
    static onProviderUpdated(event: EventHandler<ProvidersChangedState>): void;
    static removeProviderUpdatedListener(event: EventHandler<ProvidersChangedState>): void;
    private static handleProviderStateChanged;
}
export declare enum ProvidersChangedState {
    ProviderChanged = 0,
    ProviderStateChanged = 1
}