Support usage with auth middleware

Author: LucaButBoring

src/client/middleware.test.ts

@@ -161,6 +161,7 @@ describe("withOAuth", () => {
       serverUrl: "https://api.example.com",
       resourceMetadataUrl: mockResourceUrl,
       fetchFn: mockFetch,
+      userAgentProvider: expect.any(Function),
     });
 
     // Verify the retry used the new token
@@ -209,6 +210,7 @@ describe("withOAuth", () => {
       serverUrl: "https://api.example.com", // Should be extracted from request URL
       resourceMetadataUrl: mockResourceUrl,
       fetchFn: mockFetch,
+      userAgentProvider: expect.any(Function),
     });
 
     // Verify the retry used the new token
@@ -396,6 +398,7 @@ describe("withOAuth", () => {
       serverUrl: "https://api.example.com", // Should extract origin from URL object
       resourceMetadataUrl: undefined,
       fetchFn: mockFetch,
+      userAgentProvider: expect.any(Function),
     });
   });
 });
@@ -995,6 +998,7 @@ describe("Integration Tests", () => {
         "https://auth.example.com/.well-known/oauth-protected-resource",
       ),
       fetchFn: mockFetch,
+      userAgentProvider: expect.any(Function),
     });
   });
 });

src/client/middleware.ts

@@ -5,6 +5,7 @@ import {
   UnauthorizedError,
 } from "./auth.js";
 import { FetchLike } from "../shared/transport.js";
+import { createUserAgentProvider } from "../shared/userAgent.js";
 
 /**
  * Middleware function that wraps and enhances fetch functionality.
@@ -41,6 +42,7 @@ export type Middleware = (next: FetchLike) => FetchLike;
 export const withOAuth =
   (provider: OAuthClientProvider, baseUrl?: string | URL): Middleware =>
   (next) => {
+    const userAgentProvider = createUserAgentProvider();
     return async (input, init) => {
       const makeRequest = async (): Promise<Response> => {
         const headers = new Headers(init?.headers);
@@ -70,6 +72,7 @@ export const withOAuth =
             serverUrl,
             resourceMetadataUrl,
             fetchFn: next,
+            userAgentProvider,
           });
 
           if (result === "REDIRECT") {