Function isTestnet

isTestnet(network: EVMNetworkId): boolean
Check if a network is a testnet
Parameters
- network: EVMNetworkId
  The network identifier
Returns boolean
True if the network is a testnet
Example
```
console.log(isTestnet('eip155:84532')); // true
console.log(isTestnet('eip155:8453')); // false
```
- Defined in networks/index.ts:84