首先，您需要安装以下npm软件包：

"https-proxy-agent": "5.0.1",
    "net": "1.0.2",
    "tls": "0.0.1",

然后创建baseFetchOptions.ts

const HttpsProxyAgent = require('https-proxy-agent');

const baseFetchOptions: any = {};
if(process.env.HTTP_PROXY) {
    const proxyUrl = new URL(process.env.HTTP_PROXY);
    baseFetchOptions.agent = new HttpsProxyAgent({
        host: proxyUrl.hostname,
        port: proxyUrl.port
    });
}

export default baseFetchOptions;

现在您可以使用它。示例：

import baseFetchOptions from "@/utils/baseFetchOptions";

  const response = await fetch(
    "https://...",
    {
      ...baseFetchOptions,
      method: "POST",
    },
  );

如果要测试它，可以使用squid docker容器。

"dev": "HTTP_PROXY=http://127.0.0.1:3128/ next dev",