/// <reference types="node" />
import * as http from 'http';
import { MaybePromise } from '../../common';
import { ElectronSecurityToken } from '../../electron-common/electron-token';
import { WsRequestValidatorContribution } from '../../node/ws-request-validators';
/**
 * On Electron, we want to make sure that only Electron's browser-windows access the backend services.
 */
export declare class ElectronTokenValidator implements WsRequestValidatorContribution {
    protected electronSecurityToken: ElectronSecurityToken;
    protected postConstruct(): void;
    allowWsUpgrade(request: http.IncomingMessage): MaybePromise<boolean>;
    /**
     * Expects the token to be passed via cookies by default.
     */
    allowRequest(request: http.IncomingMessage): boolean;
    /**
     * Validates a token.
     *
     * This method both checks the shape of the parsed token data and its actual value.
     *
     * @param token Parsed object sent by the client as the token.
     */
    isTokenValid(token: unknown): boolean;
    /**
     * Returns the token to compare to when authorizing requests.
     */
    protected getToken(): ElectronSecurityToken;
}
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