fix: transform x-ai error response to open-ai format

Author: b4s36t4

src/providers/x-ai/index.ts

@@ -1,4 +1,4 @@
-import { ProviderConfigs } from '../types';
+import { ErrorResponse, ProviderConfigs } from '../types';
 import { X_AI } from '../../globals';
 import XAIAPIConfig from './api';
 import {
@@ -8,15 +8,43 @@ import {
   responseTransformers,
 } from '../open-ai-base';
 
+interface XAIErrorResponse {
+  error:
+    | {
+        message: string;
+        code: string;
+        param: string | null;
+        type: string | null;
+      }
+    | string;
+  code?: string;
+}
+
+const xAIResponseTransform = <T>(response: T) => {
+  let _response = response as XAIErrorResponse;
+  if ('error' in _response) {
+    return {
+      error: {
+        message: _response.error as string,
+        code: _response.code ?? null,
+        param: null,
+        type: null,
+      },
+      provider: X_AI,
+    };
+  }
+  return response;
+};
+
 const XAIConfig: ProviderConfigs = {
   chatComplete: chatCompleteParams([], { model: 'grok-beta' }),
   complete: completeParams([], { model: 'grok-beta' }),
   embed: embedParams([], { model: 'v1' }),
   api: XAIAPIConfig,
   responseTransforms: responseTransformers(X_AI, {
-    chatComplete: true,
-    complete: true,
-    embed: true,
+    chatComplete: xAIResponseTransform,
+    complete: xAIResponseTransform,
+    embed: xAIResponseTransform,
   }),
 };