Preserver original order in traverse

Author: nolannbiron

packages/openapi-parser/src/traverse.ts

@@ -29,12 +29,20 @@ export async function traverse<T extends AnyObject | AnyObject[]>(
     }
 
     const keys = Object.keys(specification);
-    await Promise.all(
-        keys.map(async (key) => {
+    const promises = await Promise.all(
+        keys.map(async (key, index) => {
             const value = specification[key];
-            result[key] = await traverse(value, transform, [...path, key], seen);
+            const processed = await traverse(value, transform, [...path, key], seen);
+            return { key, value: processed, index };
         })
     );
 
+    // Promise.all does not guarantee the order of the results
+    // So we need to sort them to preserve the original order
+    promises.sort((a, b) => a.index - b.index);
+    for (const { key, value } of promises) {
+        result[key] = value;
+    }
+
     return transform(result, path) as Promise<T>;
 }