export interface SubmitOptions {
    /** The full Formtress endpoint URL (e.g. https://app.formtress.com/api/f/your-form-id) */
    url: string;
    /** The form data to send */
    data: FormData;
    /** HTTP method (defaults to POST) */
    method?: string;
    /** Additional headers to include */
    headers?: Record<string, string>;
}
export interface SubmitResult {
    ok: boolean;
    status: number;
    message: string;
    /** Optional redirect URL returned by the API */
    redirect?: string;
}
/**
 * Submit form data to Formtress.
 */
export declare function submitForm(options: SubmitOptions): Promise<SubmitResult>;