import { EOSIOAuthOptions, SignatureProviderInterfaceClass } from './interfaces';
export declare class PlatformChecker {
    options?: EOSIOAuthOptions;
    private static MESSAGE_WAIT_TIMEOUT;
    private pendingRequest;
    constructor(options?: EOSIOAuthOptions);
    get declaredDomain(): string;
    private get platform();
    private get userAgent();
    getReturnUrl(): Promise<string>;
    isSupportedPlatform(): boolean;
    isAvailable(): Promise<boolean>;
    getSupportedSignatureProvider(): SignatureProviderInterfaceClass;
    isExtensionInstalled(): Promise<boolean>;
    private createInstallationCheckRequest;
    private installationCheckResponseNotReceived;
    private installationCheckResponseReceived;
    private onWindowMessage;
}