Function validateNetwork

validateNetwork(network: string): EVMNetworkId
Validate a network string and return it as a typed EVMNetworkId
Parameters
- network: string
  Network string to validate
Returns EVMNetworkId
Validated network identifier
Throws
Error if network is not supported
Example
```
try {
  const validNetwork = validateNetwork(userInput);
  // validNetwork is now typed as EVMNetworkId
} catch (error) {
  console.error('Invalid network:', error.message);
}
```
- Defined in networks/index.ts:319