fix import error

Author: roxylius

next.config.ts

@@ -2,8 +2,6 @@ import type { NextConfig } from 'next';
 
 const isProd = process.env.NODE_ENV ==='production';
 
-import type { NextConfig } from 'next';
-
 const nextConfig: NextConfig = {
     /* config options here */
     output: isProd ? 'export' : 'standalone',