import { NestMiddleware } from '@nestjs/common';
import { Request, Response, NextFunction } from 'express';
import { FlagContext } from '../services/flag-context';
import { FeatureFlagModuleOptions } from '../interfaces/feature-flag-options.interface';
export declare class FlagContextMiddleware implements NestMiddleware {
    private readonly context;
    private readonly options;
    constructor(context: FlagContext, options: FeatureFlagModuleOptions);
    use(req: Request, _res: Response, next: NextFunction): void;
}