Reference: `sushi/evm` Chain

The EVM chain module exposes EVM-only chain metadata and type guards.

Export	Purpose
`evmChains`, `evmChainIds`	Known EVM chains and IDs.
`EvmChainId`	Enum-like EVM chain ID lookup.
`isEvmChainId`, `getEvmChainById`	Guard and lookup by ID.
`EvmMainnetChainId`, `isEvmMainnetChainId`	Mainnet type and guard.
`EvmTestnetChainId`, `isEvmTestnetChainId`	Testnet type and guard.
`EvmChainKey`, `isEvmChainKey`, `getEvmChainByKey`	Chain key type, guard, and lookup.
`defineEvmChain`	Define an EVM chain object.

import { EvmChainId, getEvmChainById, getEvmChainByKey } from 'sushi/evm'
 
const ethereum = getEvmChainById(EvmChainId.ETHEREUM)
const base = getEvmChainByKey('base')
 
ethereum.viemChain

EVM chain objects include viem chain metadata and explorer URL helpers. For feature support such as API, V2, or V3 availability, see EVM Config.