fix: dont cast ErrnoException

Author: scagood

lib/util/exists.js

@@ -51,7 +51,8 @@ module.exports = function exists(filePath) {
                 existsCaseSensitive(relativePath)
         } catch (error) {
             if (
-                /** @type {NodeJS.ErrnoException} */ (error).code !== "ENOENT"
+                error instanceof Error &&
+                ("code" in error === false || error.code !== "ENOENT")
             ) {
                 throw error
             }