What is Tevm Node?

Tevm Node is a full Ethereum execution environment that runs natively in JavaScript. It provides the complete functionality of an Ethereum node without requiring any blockchain client installation.

Conceptually, it works very similar to Anvil and Hardhat but with more powerful TypeScript native interop.

What Makes Tevm Unique?

Unlike traditional development environments like Hardhat or Anvil, Tevm Node offers several distinct advantages:

• Cross-Platform Compatibility — The same code works everywhere JavaScript runs, with zero native dependencies including your applications in the browser
• Fine-grained EVM Control — Access the execution environment at any level of detail, from high-level transactions to individual EVM opcodes
• Enhanced User Experience — Enable advanced features like instantaneous gas estimation, optimistic UI updates, and sophisticated transaction simulation
• Type-safe Interactions — Full TypeScript support throughout the entire API surface powered by abitype
• Direct Solidity Imports — The powerful ability to write solidity code that interops with your TypeScript code in a typesafe way via the Tevm Bundler

Universal JavaScript Compatibility

Tevm's key innovation is bringing the Ethereum execution environment to every JavaScript runtime:

Integration With Popular Libraries

Tevm works with the libraries you already know and love including viem wagmi and ethers:

import { createMemoryClient, http } from "tevm";
 
const client = createMemoryClient();
 
// Use standard viem actions
const balance = await client.getBalance({ address: "0x..." });
const blockNumber = await client.getBlockNumber();
 
// Plus Tevm-specific actions
await client.tevmMine({ blocks: 1 });
await client.tevmSetAccount({
  address: "0x...",
  balance: 100000000000000000n, // 0.1 ETH
});

How Tevm Compares

Library Compatibility

Next Steps