reproduce fastify-cors problem

[akphi]

To reproduce the issue, run the following command

yarn install
// after installing, I patch node_modules/@fastify/cors/index.d.ts to have
// export { fastifyCors }
// so this will clear the TS problem when compiling using tsc

yarn dev

You should see the following problem though:

import { fastifyCors } from "@fastify/cors";
         ^^^^^^^^^^^
SyntaxError: Named export 'fastifyCors' not found. The requested module '@fastify/cors' is a CommonJS module, which may not support all module.exports as named exports.
CommonJS modules can always be imported via the default export, for example using:

import pkg from '@fastify/cors';
const { fastifyCors } = pkg;

    at ModuleJob._instantiate (node:internal/modules/esm/module_job:123:21)
    at async ModuleJob.run (node:internal/modules/esm/module_job:189:5)
    at async Promise.all (index 0)
    at async ESMLoader.import (node:internal/modules/esm/loader:533:24)
    at async loadESM (node:internal/process/esm_loader:91:5)
    at async handleMainPromise (node:internal/modules/run_main:65:12)