createTevmTransport

createTevmTransport(options): TevmTransport<string>

Creates a custom TEVM Transport for viem.

A Transport in viem is the intermediary layer responsible for executing outgoing RPC requests. This custom TEVM Transport integrates an in-memory Ethereum client, making it ideal for local-first applications, optimistic updates, and advanced TEVM functionalities like scripting.

Parameters

• options: TevmNodeOptions<object> = {}

Configuration options for the base client, similar to those used in memoryClient or a low-level baseClient.

Returns

TevmTransport<string>

A configured TEVM transport.

Example

import { createClient, http } from 'viem'
import { createTevmTransport } from 'tevm'
import { optimism } from 'tevm/common'

const client = createClient({
  transport: createTevmTransport({
    fork: { transport: http('https://mainnet.optimism.io')({}) }
  }),
  chain: optimism,
})

async function example() {
  const blockNumber = await client.getBlockNumber()
  console.log(blockNumber)
}

example()

See

• createClient
• Viem Client Docs
• Client Guide
• tevm JSON-RPC Guide
• EIP-1193 spec
• Ethereum jsonrpc docs
• CreateMemoryClient Docs - For a batteries-included client if not worried about tree shaking

Defined in

packages/memory-client/src/createTevmTransport.js:58