module: fix check exports issue in cjs module loading

Refs: #31001 (comment)

PR-URL: #31427
Reviewed-By: Richard Lau <[email protected]>
Reviewed-By: Shelley Vohr <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Rich Trott <[email protected]>

Author: guybedford

lib/internal/modules/cjs/loader.js

@@ -435,7 +435,7 @@ function resolveBasePath(basePath, exts, isMain, trailingSlash, request) {
 
 function trySelf(parentPath, isMain, request) {
   const { data: pkg, path: basePath } = readPackageScope(parentPath) || {};
-  if (!pkg || 'exports' in pkg === false) return false;
+  if (!pkg || pkg.exports === undefined) return false;
   if (typeof pkg.name !== 'string') return false;
 
   let expansion;