stack-orchestrator/app/data/config/optimism-contracts/hardhat-tasks/rekey-json.ts

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import fs from 'fs'
import { task } from 'hardhat/config'
import { hdkey } from 'ethereumjs-wallet'
import * as bip39 from 'bip39'
task('rekey-json', 'Generates a new set of keys for a test network')
.addParam('output', 'JSON file to output accounts to')
.setAction(async ({ output: outputFile }) => {
const mnemonic = bip39.generateMnemonic()
const pathPrefix = "m/44'/60'/0'/0"
const labels = ['Admin', 'Proposer', 'Batcher', 'Sequencer']
const hdwallet = hdkey.fromMasterSeed(await bip39.mnemonicToSeed(mnemonic))
const output = {}
for (let i = 0; i < labels.length; i++) {
const label = labels[i]
const wallet = hdwallet.derivePath(`${pathPrefix}/${i}`).getWallet()
const addr = '0x' + wallet.getAddress().toString('hex')
const pk = wallet.getPrivateKey().toString('hex')
output[label] = { address: addr, privateKey: pk }
}
fs.writeFileSync(outputFile, JSON.stringify(output, null, 2))
console.log(`L2 account keys written to ${outputFile}`)
})