解决国内 nextjs 三方登录等网络问题

next.config.ts

const isDev = process.env.NODE_ENV === "development";

if (isDev) {
  require("./proxy-setup");
}

proxy-setup.ts

import { ProxyAgent, Dispatcher } from "undici";
const { fetch: originalFetch } = global;

const proxyAgent = new ProxyAgent("http://127.0.0.1:7890/");

global.fetch = (
  url: string | URL | Request,
  opts: RequestInit & { dispatcher?: Dispatcher } = {}
) => {
  // 只对特定域名使用代理
  // const urlStr = url.toString();

  // 排除本地 API 请求
  // if (urlStr.includes(":3008/api/")) {
  //   return originalFetch(url, opts);
  //}

  // 请求使用代理
  opts.dispatcher = proxyAgent;

  try {
    return originalFetch(url, opts);
  } catch (error) {
    console.error("Fetch error:", error);
    throw error;
  }
};