import http from 'node:http';
import https from 'node:https';
import type { SsrfBridge } from '../ssrf';
export type ProxyUrl = `${'http' | 'https'}://${string}`;
export declare function isSupportedProxyUrl(value: string | null | undefined): value is ProxyUrl;
export type ProxyOption = 'env' | ProxyUrl | false;
export type SsrfOption = SsrfBridge | 'disabled';
export type NodeAgentOptions = https.AgentOptions;
export declare function buildNodeAgents(proxy: ProxyOption, ssrf: SsrfOption, agentOptions?: NodeAgentOptions): {
    httpAgent: http.Agent;
    httpsAgent: https.Agent;
};