fix: circular structure in error object (#60)

Author: malstoun

src/server/index.js

@@ -139,16 +139,15 @@ export function getLoadableState(
 
   return Promise.all(mappedQueries).then(() => {
     if (errors.length > 0) {
-      const error =
-        errors.length === 1
-          ? errors[0]
-          : new Error(
-              `${
-                errors.length
-              } errors were thrown when importing your modules.`,
-            )
-      error.queryErrors = errors
-      throw error
+      if (errors.length === 1) {
+        throw errors[0];
+      } else {
+        const err = new Error(
+          `${errors.length} errors were thrown when importing your modules.`
+        );
+        err.queryErrors = errors
+        throw err;
+      }
     }
 
     return new DeferredState(tree)