import { AxiosRequestConfig as OriginalRequestConfig } from "axios";
export interface AxiosRequestConfig extends Omit<OriginalRequestConfig, "method" | "url" | "headers"> {
    headers?: Record<string, string>;
}
export interface InternalRequestConfig extends Omit<OriginalRequestConfig, "headers"> {
    url?: string;
    headers?: Record<string, string>;
}
export declare function mergeConfig(): undefined;
export declare function mergeConfig(...configs: Array<InternalRequestConfig | undefined>): InternalRequestConfig;