d1onys1us / tevm-monorepo

Devnet, bundler and LSP for Solidity and TypeScript that runs in the browser

Build powerful TypeScript applications powered by the EVM, simplified

tevm-monorepo

Tevm is an ethereum development toolkit that offers

• Arbitrary EVM execution and forking akin to anvil
• A powerful solidity scripting environment akin to foundry scripts
• Build tooling to create a smooth interface between your Solidity scripts and TypeScript code

Tevm runs in all environments

• All modern browsers
• Node.js >=18
• Bun

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Visit Docs for docs, guides, API and more! 📄

Code example

Tevm scripting is a simple yet powerful way to program.

1. Write a solidity script HelloWorld.s.sol

// SPDX-License-Identifier: MIT
pragma solidity >0.8.0;

contract HelloWorld {
    function greet(string memory name) public pure returns (string memory) {
        return string(abi.encodePacked("Hello ", name, "!"));
    }
}

2. Import the solidity file into a JavaScript or TypeScript file. No need to compile it.

import { HelloWorld } from './HelloWorld.sol'

console.log(HelloWorld.abi)
console.log(HelloWorld.bytecode)

3. Initialize a Tevm memory client and execute your Script using the tevm.script action

import { HelloWorld } from './HelloWorld.sol'
import { createMemoryClient } from 'tevm'

const client = createMemoryClient()

const result = await client.script(
  HelloWorld.read.greate('World')
)

console.log(result.data) // Hello world!

This is just a small subset of what Tevm offers. See docs for more information.

Contributing 💻

Contributions are encouraged, but please open an issue before doing any major changes to make sure your change will be accepted.

See CONTRIBUTING.md for contributing information

License 📄