import express from 'express';
export interface CorsConfig {
    /** Base URL for web application (e.g., 'example.com' or 'https://example.com') */
    webBaseUrl?: string;
    /** Allow any localhost origin (http://localhost:*) for local development */
    allowLocalhost?: boolean;
    /**
     * @deprecated Use `allowLocalhost` instead. This field controls both test endpoints and localhost CORS.
     * When `allowLocalhost` is set, it takes precedence for CORS behavior.
     */
    enableTestEndpoints?: boolean;
}
export declare function corsMiddleware(config?: CorsConfig): (req: express.Request, res: express.Response, next: express.NextFunction) => void;
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