Function extractEip2612GasSponsorPayload

extractEip2612GasSponsorPayload(
extensions: Record<string, unknown>,
): Eip2612GasSponsorPayload
Extracts the EIP-2612 gas sponsor payload from payment extensions.
Parameters
- extensions: Record<string, unknown>
  The extensions map from a PaymentPayload
Returns Eip2612GasSponsorPayload
The gas sponsor payload if present, or null
Example
```
const permit = extractEip2612GasSponsorPayload(paymentPayload.extensions);
if (permit) {
  // Submit permit tx then settle via Permit2
}
```
- Defined in extensions/src/eip2612-gas-sponsoring/facilitator.ts:30