title: "Could not read source map" errors when connecting to Node debugger (Next.js)
body: <p>I'm following the <a href="https://nextjs.org/docs/advanced-features/debugging" rel="nofollow noreferrer">Next.js debugging docs</a> to set up my local debugging environment.</p>
  <p>&quot;Step 1: Start Next.js in debug mode&quot; is working fine:</p>
  <pre><code>&gt; cross-env NODE_OPTIONS='--inspect' next dev
  
  Debugger listening on ws://127.0.0.1:9229/e4bb955d-e3b2-4849-b6e7-0248e6a3d53e
  For help, see: https://nodejs.org/en/docs/inspector
  Loaded env from C:\Users\markj\workspace\my-app\.env.local
  ready - started server on http://localhost:3000
  info  - Using external babel configuration from C:\Users\markj\workspace\my-app\babel.config.js
  event - compiled successfully
  </code></pre>
  <p>But on &quot;Step 2: Connect to the debugger&quot; I get these errors in VSCode Debug Console:</p>
  <pre><code>Could not read source map for file:///C:/Users/markj/workspace/my-app/node_modules/next/dist/compiled/path-to-regexp/index.js: ENOENT: no such file or directory, open 'c:\Users\markj\workspace\my-app\node_modules\next\dist\compiled\path-to-regexp\index.js.map'
  Could not read source map for file:///C:/Users/markj/workspace/my-app/node_modules/@next/react-refresh-utils/ReactRefreshWebpackPlugin.js: ENOENT: no such file or directory, open 'c:\Users\markj\workspace\my-app\node_modules\@next\react-refresh-utils\ReactRefreshWebpackPlugin.js.map'
  Could not read source map for file:///C:/Users/markj/workspace/my-app/node_modules/typescript/lib/typescript.js: ENOENT: no such file or directory, open 'c:\Users\markj\workspace\my-app\node_modules\typescript\lib\typescript.js.map'
  Could not read source map for file:///C:/Users/markj/workspace/my-app/node_modules/@next/react-refresh-utils/loader.js: ENOENT: no such file or directory, open 'c:\Users\markj\workspace\my-app\node_modules\@next\react-refresh-utils\loader.js.map'
  Could not read source map for file:///C:/Users/markj/workspace/my-app/node_modules/@next/react-refresh-utils/internal/ReactRefreshModule.runtime.js: ENOENT: no such file or directory, open 'c:\Users\markj\workspace\my-app\node_modules\@next\react-refresh-utils\internal\ReactRefreshModule.runtime.js.map'
  </code></pre>
  <p>Unsurprisingly with these errors when I try to attach breakpoints it says &quot;Unbound breakpoint&quot;.</p>
  <p>Environment:</p>
  <ul>
  <li>Windows 10.0.19042</li>
  <li>Node.js 12.20.0</li>
  <li>Next.js 10.0.2</li>
  <li>VSCode 1.51.1</li>
  </ul>
  <p>Any help or ideas are much appreciated!</p>