@ethereumjs/common
Version:
Resources common to all Ethereum implementations
23 lines • 1.17 kB
JavaScript
import { addHexPrefix, bigIntToHex, isHexString } from '@ethereumjs/util';
/**
* Parses the geth genesis state into Blockchain {@link GenesisState}
* @param gethGenesis GethGenesis object
* @returns Parsed {@link GenesisState}
*/
export function parseGethGenesisState(gethGenesis) {
const state = {};
for (const address of Object.keys(gethGenesis.alloc)) {
const { balance: rawBalance, code: rawCode, nonce: rawNonce, storage: rawStorage, } = gethGenesis.alloc[address];
// create a map with lowercase for easy lookups
const prefixedAddress = addHexPrefix(address.toLowerCase());
const balance = isHexString(rawBalance) ? rawBalance : bigIntToHex(BigInt(rawBalance));
const code = rawCode !== undefined ? addHexPrefix(rawCode) : undefined;
const storage = rawStorage !== undefined
? Object.entries(rawStorage).map((storagePair) => storagePair.map(addHexPrefix))
: undefined;
const nonce = rawNonce !== undefined ? addHexPrefix(rawNonce) : undefined;
state[prefixedAddress] = [balance, code, storage, nonce];
}
return state;
}
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