proxy.js

const fetch = require('node-fetch');
const endpoint = "api.openai.com";

async function handleRequest(params, context) {
  const path = context.request.url.replace(/\/[^\/]+/, '');
  const fetchAPI = `https://${endpoint}/v1${path}`;

  console.log(fetchAPI);
  const headers = {
    ...context.headers,
  };
  delete headers['content-length'];
  delete headers['host'];
  
  const payload = {
    method: context.method,
    headers,
    body: JSON.stringify({
      ...params
    }),
  };
  let response = await fetch(fetchAPI, payload);
  // console.log(response.body);
  // console.log(response.headers.get('content-type'));
  const streaming = params.stream;
  for(const key of Object.keys(response.headers)) {
    context.set(key, response.headers.get(key));
  }
  if(streaming) {
    return response.body;
  } else {
    return response.json();
  }
}

module.exports = async function (params, context) {
  return await handleRequest(params, context);
};

要设置环境变量 EXPERIMENTAL_ROUTE = 1