Common: Chain Refactor

packages/common/examples/common.ts

@@ -1,22 +1,19 @@
-import { Chain, Common, Hardfork, createCustomCommon } from '@ethereumjs/common'
+import { Common, Hardfork, Mainnet, createCustomCommon } from '@ethereumjs/common'
 
 // With enums:
-const commonWithEnums = new Common({ chain: Chain.Mainnet, hardfork: Hardfork.London })
-
-// (also possible with directly passing in strings:)
-const commonWithStrings = new Common({ chain: 'mainnet', hardfork: 'london' })
+const commonWithEnums = new Common({ chain: Mainnet, hardfork: Hardfork.London })
 
 // Instantiate with the chain (and the default hardfork)
-let c = new Common({ chain: Chain.Mainnet })
+let c = new Common({ chain: Mainnet })
 
 // Get bootstrap nodes for chain/network
 console.log('Below are the known bootstrap nodes')
 console.log(c.bootstrapNodes()) // Array with current nodes
 
 // Instantiate with an EIP activated
-c = new Common({ chain: Chain.Mainnet, eips: [4844] })
+c = new Common({ chain: Mainnet, eips: [4844] })
 console.log(`EIP 4844 is active -- ${c.isActivatedEIP(4844)}`)
 
 // Instantiate common with custom chainID
-const commonWithCustomChainId = createCustomCommon({ chainId: 1234 })
+const commonWithCustomChainId = createCustomCommon({ chainId: 1234 }, Mainnet)
 console.log(`The current chain ID is ${commonWithCustomChainId.chainId}`)

packages/common/examples/customCrypto.ts

@@ -1,12 +1,12 @@
 import { createBlockFromBlockData } from '@ethereumjs/block'
-import { Chain, Common } from '@ethereumjs/common'
+import { Common, Mainnet } from '@ethereumjs/common'
 import { keccak256, waitReady } from '@polkadot/wasm-crypto'
 
 const main = async () => {
   // @polkadot/wasm-crypto specific initialization
   await waitReady()
 
-  const common = new Common({ chain: Chain.Mainnet, customCrypto: { keccak256 } })
+  const common = new Common({ chain: Mainnet, customCrypto: { keccak256 } })
   const block = createBlockFromBlockData({}, { common })
 
   // Method invocations within EthereumJS library instantiations where the common

packages/common/examples/initKzg.ts

@@ -1,10 +1,10 @@
-import { Chain, Common, Hardfork } from '@ethereumjs/common'
+import { Common, Hardfork, Mainnet } from '@ethereumjs/common'
 import { loadKZG } from 'kzg-wasm'
 
 const main = async () => {
   const kzg = await loadKZG()
   const common = new Common({
-    chain: Chain.Mainnet,
+    chain: Mainnet,
     hardfork: Hardfork.Cancun,
     customCrypto: { kzg },
   })