Function encodeSIWxHeader

encodeSIWxHeader(payload: SIWxPayload): string
Encodes a SIWx payload for transmission in HTTP header.
Parameters
- payload: SIWxPayload
  The SIWx payload to encode
Returns string
Base64-encoded JSON string
Example
```
const header = encodeSIWxHeader(payload);
fetch(url, {
  headers: { 'X-T402-SIWx': header }
});
```
- Defined in extensions/src/sign-in-with-x/client.ts:30