fix(core): map xAI native options (#39787)

packages/core/test/aisdk-native.test.ts

@@ -0,0 +1,46 @@
+import { describe, expect, test } from "bun:test"
+import { AISDKNative } from "@opencode-ai/core/aisdk-native"
+
+describe("AISDKNative", () => {
+  test("maps supported xAI settings", () => {
+    expect(
+      AISDKNative.map("@ai-sdk/xai", {
+        apiKey: "secret",
+        baseURL: "https://xai.example/v1",
+        reasoningEffort: "custom",
+        store: true,
+        promptCacheKey: "cache-key",
+      }),
+    ).toEqual({
+      package: "@opencode-ai/ai/providers/xai",
+      settings: {
+        apiKey: "secret",
+        baseURL: "https://xai.example/v1",
+        providerOptions: {
+          xai: {
+            reasoningEffort: "custom",
+            store: true,
+            promptCacheKey: "cache-key",
+          },
+        },
+      },
+    })
+  })
+
+  test("omits invalid and unsupported xAI settings", () => {
+    expect(
+      AISDKNative.map("@ai-sdk/xai", {
+        reasoningEffort: 10,
+        store: "yes",
+        include: ["unknown"],
+        logprobs: true,
+        topLogprobs: 8,
+        previousResponseId: "response-id",
+        searchParameters: { mode: "auto" },
+      }),
+    ).toEqual({
+      package: "@opencode-ai/ai/providers/xai",
+      settings: {},
+    })
+  })
+})