发布后同步到 npm 镜像

在发布 npm 包后，可以立即在 npm 上看到最新的版本，然而 npmmirror 等镜像站却有一定的延迟。如果想要立即同步到镜像站，可以使用以下方法：

1. 在项目根目录创建 scripts 文件夹，创建 sync.mjs 文件

   // @ts-check
   
   import { readFile } from "fs/promises"
   
   /**
    * 将浏览器中直接复制的 headers 转换为对象
    * @param {string} str 复制的 headers
    * @returns {Headers} headers 对象
    */
   function getHeaders(str) {
       const reg = /^(.+?):$\n^(.+?)$/gm
       const reg2 = new RegExp(reg.source, "m")
       const headers = new Headers()
       const match = str.match(reg)
       if (!match) throw new Error("headers 格式错误")
   
       Array.from(match).forEach(item => {
           const match2 = item.match(reg2)
           headers.set(match2[1], match2[2])
       })
   
       return headers
   }
   
   const headers = getHeaders(`accept:
       */*
       accept-encoding:
       gzip, deflate, br, zstd
       accept-language:
       zh-CN,zh;q=0.9,en;q=0.8
       content-length:
       0
       dnt:
       1
       origin:
       https://npmmirror.com
       priority:
       u=1, i
       referer:
       https://npmmirror.com/
       sec-ch-ua:
       "Google Chrome";v="131", "Chromium";v="131", "Not_A Brand";v="24"
       sec-ch-ua-mobile:
       ?0
       sec-ch-ua-platform:
       "Windows"
       sec-fetch-dest:
       empty
       sec-fetch-mode:
       cors
       sec-fetch-site:
       same-site
       user-agent:
       Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36`)
   
   /**
    * 同步包
    * @param {string} packageName 包名
    */
   function syncPackage(packageName) {
       return fetch(`https://registry-direct.npmmirror.com/-/package/${packageName}/syncs`, {
           headers,
           referrer: "https://npmmirror.com/",
           referrerPolicy: "strict-origin-when-cross-origin",
           method: "PUT",
           mode: "cors",
           credentials: "omit",
       })
   }
   
   async function main() {
       const packageJson = JSON.parse(await readFile("package.json", "utf-8"))
       await syncPackage(packageJson.name)
   }
   
   main()

2. 在 package.json 中添加 sync 脚本

   {
       "scripts": {
           "postpublish": "node scripts/sync.mjs"
       }
   }