@cfxdevkit/core

pnpm add @cfxdevkit/core

import { ClientManager, EVM_MAINNET, EVM_TESTNET } from '@cfxdevkit/core'
 
// Testnet
const client = new ClientManager({ network: 'testnet' })
await client.connect()
const block = await client.evm.publicClient.getBlockNumber()
 
// Mainnet
const mainnet = new ClientManager({
  evm: { chain: EVM_MAINNET },
})
await mainnet.connect()

import { generateMnemonic, deriveAccounts } from '@cfxdevkit/core/wallet'
 
const mnemonic = generateMnemonic()
const accounts = deriveAccounts(mnemonic, { count: 5 })
 
for (const acc of accounts) {
  console.log(`[${acc.index}]`)
  console.log('  eSpace:', acc.evmAddress)
  console.log('  Core:  ', acc.coreAddress)
}

import { ContractReader, ERC20_ABI } from '@cfxdevkit/core/contracts'
 
const reader = new ContractReader(client)
const balance = await reader.read({
  address: '0xTokenAddress',
  abi: ERC20_ABI,
  functionName: 'balanceOf',
  args: ['0xYourAddress'],
  chain: 'evm',
})

import { ContractWriter } from '@cfxdevkit/core/contracts'
 
const writer = new ContractWriter(client, walletClient)
const hash = await writer.write({
  address: '0xTokenAddress',
  abi: ERC20_ABI,
  functionName: 'transfer',
  args: ['0xRecipient', 1_000_000n],
  chain: 'evm',
})

import { ContractDeployer } from '@cfxdevkit/core/contracts'
import { erc20BaseAbi, erc20BaseBytecode } from '@cfxdevkit/contracts'
import { parseEther } from 'viem'
 
const deployer = new ContractDeployer(client, walletClient)
const { address, hash } = await deployer.deploy({
  abi: erc20BaseAbi,
  bytecode: erc20BaseBytecode,
  args: ['My Token', 'MTK', parseEther('1000000'), ownerAddress],
  chain: 'evm',
})