Use the closest package.json to an asset if it's in a different subtree

packages/utils/node-resolver-core/src/NodeResolver.js

@@ -997,7 +997,22 @@ export default class NodeResolver {
     }
 
     if (found) {
-      return {path: found, pkg};
+      let resolvedPkg;
+      if (pkg == null) {
+        resolvedPkg = null;
+      } else if (found.startsWith(pkg.pkgdir)) {
+        resolvedPkg = pkg;
+      } else {
+        // If the package.json is not in an ancestor directory of the resolved
+        // file, the package.json listed a file in a different subtree. Use the
+        // closest package.json to the resolved file instead.
+        resolvedPkg = await this.readPackage(path.dirname(found), ctx);
+      }
+
+      return {
+        path: found,
+        pkg: resolvedPkg,
+      };
     }
 
     return null;