fix(passkey): passkey breaks with throw: true (#5079)

Co-authored-by: Bereket Engida <Bekacru@gmail.com>
Co-authored-by: Bereket Engida <86073083+Bekacru@users.noreply.github.com>

docs/content/docs/plugins/passkey.mdx

@@ -107,6 +107,10 @@ type addPasskey = {
 ```
 </APIMethod>
 
+<Callout>
+ Setting `throw: true` in the fetch options has no effect for the register and sign-in passkey responses — they will always return a data object containing the error object.
+</Callout>
+
 
 ### Sign in with a passkey
 

packages/better-auth/src/plugins/passkey/client.ts

@@ -36,6 +36,7 @@ export const getPasskeyActions = (
 			"/passkey/generate-authenticate-options",
 			{
 				method: "POST",
+				throw: false,
 			},
 		);
 		if (!response.data) {
@@ -56,6 +57,7 @@ export const getPasskeyActions = (
 				...opts?.fetchOptions,
 				...options,
 				method: "POST",
+				throw: false,
 			});
 			$listPasskeys.set(Math.random());
 			$store.notify("$sessionSignal");
@@ -110,8 +112,10 @@ export const getPasskeyActions = (
 						name: opts.name,
 					}),
 				},
+				throw: false,
 			},
 		);
+
 		if (!options.data) {
 			return options;
 		}
@@ -130,7 +134,9 @@ export const getPasskeyActions = (
 					name: opts?.name,
 				},
 				method: "POST",
+				throw: false,
 			});
+
 			if (!verified.data) {
 				return verified;
 			}