import type { MiddlewareFunc } from '@eggjs/core';
/**
 * jsonp options
 * @member Config#jsonp
 */
export interface JSONPConfig {
    /**
     * jsonp callback methods key, default to `['_callback', 'callback' ]`
     */
    callback: string[] | string;
    /**
     * callback method name's max length, default to `50`
     */
    limit: number;
    /**
     * enable csrf check or not, default to `false`
     */
    csrf: boolean;
    /**
     * referrer white list, default to `undefined`
     */
    whiteList?: string | RegExp | (string | RegExp)[];
}
declare module '@eggjs/core' {
    interface EggAppConfig {
        jsonp: JSONPConfig;
    }
    interface Context {
        /**
         * detect if response should be jsonp
         */
        acceptJSONP: boolean;
        /**
         * JSONP wrap body function
         * Set jsonp response wrap function, other plugin can use it.
         * If not necessary, please don't use this method in your application code.
         * @param {Object} body response body
         * @private
         */
        createJsonpBody(body: any): void;
    }
    interface EggCore {
        /**
         * return a middleware to enable jsonp response.
         * will do some security check inside.
         * @public
         */
        jsonp(initOptions?: Partial<JSONPConfig>): MiddlewareFunc;
    }
}