Is this package bugged or something? Using it is literally the only way I can not connect to my local db.

- works ✅ running this in command line psql postgres://postgres:password@localhost:5432/test

- works ✅ using pg package directly, which is used internally by @vercel/postgres:

import { Client } from "pg";
const client = new Client( {
    host: "localhost",
    port: 5432,
    user: "postgres",
    password: "password",
    database: "test",
  } );
await client.connect();
await client.query( "SELECT NOW()" );

- fails ❌ using @vercel/postgres, trying to run "await sqlSELECT NOW()"

having set POSTGRES_URL=postgres://postgres:password@localhost:5432/test

gives the following error:

NeonDbError: Error connecting to database: fetch failed
    at eval (webpack-internal:///(sc_server)/./node_modules/@neondatabase/serverless/index.js:4684:21)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async GET (webpack-internal:///(sc_server)/./src/app/api/test/route.ts:23:21)
    at async eval (webpack-internal:///(sc_server)/./node_modules/next/dist/server/future/route-modules/app-route/module.js:253:37) {
  code: null,
  sourceError: TypeError: fetch failed
      at Object.fetch (node:internal/deps/undici/undici:11457:11)
      at process.processTicksAndRejections (node:internal/process/task_queues:95:5) {
    cause: Error: connect ECONNREFUSED ::1:443
        at TCPConnectWrap.afterConnect [as oncomplete] (node:net:1494:16)
        at TCPConnectWrap.callbackTrampoline (node:internal/async_hooks:130:17) {
      errno: -4078,
      code: 'ECONNREFUSED',
      syscall: 'connect',
      address: '::1',
      port: 443
    }
  }
}

I'm seeing the same issue. did you figure out a solution?

Looks like this is an open issue - related to neon serverless and localhost. tracked here https://github.com/vercel/examples/issues/701