[JavaScript] error [vite]: Rollup failed to resolve import "node-fetch"

求解这个错误是什么原因导致的

github 上找的 blog 程序，本地运行正常，可以正常 build 输出，但是在 vercel cloudflare 这些平台上就报下面的错误，node 版本也设置了不行。

好像经常碰到 node-fetch 类的问题

 error   [vite]: Rollup failed to resolve import "node-fetch" from "/vercel/path0/src/lib/blog-helpers.ts".
22:49:46.923
  This is most likely unintended because it can break your application at runtime.
22:49:46.923
  If you do want to externalize this module explicitly add it to
22:49:46.924
  `build.rollupOptions.external`
22:49:46.924
Error: [vite]: Rollup failed to resolve import "node-fetch" from "/vercel/path0/src/lib/blog-helpers.ts".
22:49:46.924
This is most likely unintended because it can break your application at runtime.
22:49:46.924
If you do want to externalize this module explicitly add it to
22:49:46.924
`build.rollupOptions.external`
22:49:46.924
    at viteWarn (file:///vercel/path0/node_modules/.pnpm/vite@4.5.3/node_modules/vite/dist/node/chunks/dep-41cf5ffd.js:48216:27)
22:49:46.924
    at onRollupWarning (file:///vercel/path0/node_modules/.pnpm/vite@4.5.3/node_modules/vite/dist/node/chunks/dep-41cf5ffd.js:48248:9)
    ```