Skip to content
Tevm Docs
Blog

createContract

createContract<TName, TAbi, TAddress, TBytecode, TDeployedBytecode, TCode, THumanReadableAbi>(__namedParameters): Contract<TName, THumanReadableAbi, TAddress, TBytecode, TDeployedBytecode, TCode>

Creates a Tevm Contract instance from a human-readable ABI or JSON ABI. This function is the core of Tevm’s contract interaction capabilities, allowing for type-safe and easy-to-use contract interfaces.

Type Parameters

• TName extends string

• TAbi extends Abi | readonly string[]

• TAddress extends undefined | `0x${string}` = undefined

• TBytecode extends undefined | `0x${string}` = undefined

• TDeployedBytecode extends undefined | `0x${string}` = undefined

• TCode extends undefined | `0x${string}` = undefined

• THumanReadableAbi extends readonly string[] = TAbi extends readonly string[] ? TAbi<TAbi> : TAbi extends Abi ? FormatAbi<TAbi<TAbi>> : never

Parameters

• __namedParameters: CreateContractParams<TName, TAbi, TAddress, TBytecode, TDeployedBytecode, TCode>

Returns

Contract<TName, THumanReadableAbi, TAddress, TBytecode, TDeployedBytecode, TCode>

Throws

If neither humanReadableAbi nor abi is provided.

Examples

Using a human-readable ABI:

import { createContract } from 'tevm/contract'


const contract = createContract({
  name: 'ERC20',
  humanReadableAbi: [
    'function balanceOf(address account) view returns (uint256)',
    'function transfer(address to, uint256 amount) returns (bool)',
    'event Transfer(address indexed from, address indexed to, uint256 value)'
  ],
  address: '0x6B175474E89094C44Da98b954EedeAC495271d0F' // DAI token address
})


// Read contract state
const balanceAction = contract.read.balanceOf('0x1234...')
const balance = await tevm.contract(balanceAction)


// Write to contract
const transferAction = contract.write.transfer('0x5678...', 1000n)
const result = await tevm.contract(transferAction)


// Create event filter
const transferFilter = contract.events.Transfer({ fromBlock: 'latest' })
const logs = await tevm.eth.getLogs(transferFilter)

Using a JSON ABI:

import { createContract } from 'tevm/contract'


const contract = createContract({
  name: 'ERC20',
  abi: [
    {
      "inputs": [{"name": "account", "type": "address"}],
      "name": "balanceOf",
      "outputs": [{"type": "uint256"}],
      "stateMutability": "view",
      "type": "function"
    },
    // ... other ABI entries
  ],
  address: '0x6B175474E89094C44Da98b954EedeAC495271d0F',
  bytecode: '0x60806040...', // Optional: Creation bytecode
  deployedBytecode: '0x608060405...', // Optional: Deployed bytecode
  code: '0x608060405...' // Optional: Runtime bytecode
})


// Use the contract as in the previous example

See

Defined in

createContract.js:73