import { ProctoringFinisherOptions } from "../proctoring/proctoring";
export declare class Extension {
    hasExtension: boolean;
    tryes: number;
    responseStart: boolean;
    options: ProctoringFinisherOptions;
    start(): Promise<boolean>;
    sendVerifyMsg(link: string, token: string): void;
    private verify;
    addEventListener(): void;
}