> Fetch clean Markdown by appending `.md` to any page URL under https://signalwire.com/docs or requesting it with the HTTP header `Accept: text/markdown`. The root index at https://signalwire.com/docs/llms.txt lists the available documentation indexes.

# warnings$

> Observable stream of non-fatal SDK warnings.

```ts
get warnings$(): Observable<SDKWarning>
```

Observable stream of non-fatal SDK warnings.

Subscribe to detect SDK behaviors that affect session liveness or
developer-facing contracts but do not warrant disconnection — for example, a
fallback from Client Bound SAT refresh to the developer-provided `refresh()`
because the SAT lacks `sat:refresh` scope. Each warning is discriminated by its
`code`. See [`SDKWarning`](/docs/browser-sdk/v4/reference/type-aliases/sdk-warning).

Independent from [`errors$`](/docs/browser-sdk/v4/reference/signalwire/errors\$):
existing error consumers are not notified, so reacting to a warning does not
trigger error-handling code paths (disconnect cascades, user-facing toasts).

## **Examples**

```ts
client.warnings$.subscribe((warning) => {
  switch (warning.code) {
    case 'credential_refresh_fallback':
      console.warn('Fell back to developer refresh:', warning.reason);
      break;
    case 'credential_no_refresh_handler':
      console.warn('Session will end at', new Date(warning.expiresAt));
      break;
  }
});
```

> Observable stream of non-fatal SDK warnings.