fix(fetch): fix credentials handling in Cloudflare workers (#6533)

hansottowirtz · DigitalBrainJS · web-flow · commit 550d885eb90f · 2024-08-20T15:23:32.000+03:00
Co-authored-by: Dmitriy Mozgovoy &lt;robotshara@gmail.com&gt;
diff --git a/lib/adapters/fetch.js b/lib/adapters/fetch.js
@@ -155,14 +155,17 @@ export default isFetchSupported && (async (config) => {
       withCredentials = withCredentials ? 'include' : 'omit';
     }
 
+    // Cloudflare Workers throws when credentials are defined
+    // see https://github.com/cloudflare/workerd/issues/902
+    const isCredentialsSupported = "credentials" in Request.prototype; 
     request = new Request(url, {
       ...fetchOptions,
       signal: composedSignal,
       method: method.toUpperCase(),
       headers: headers.normalize().toJSON(),
       body: data,
       duplex: "half",
-      credentials: withCredentials
+      credentials: isCredentialsSupported ? withCredentials : undefined
     });
 
     let response = await fetch(request);
