TypeScript programming with the full power of the Ethereum Virtual Machine

[](https://github.com/evmts/tevm-monorepo/actions/workflows/nx.yml) # tevm-monorepo Tevm is an ethereum development toolkit that offers - Arbitrary EVM execution and forking akin to [anvil](https://github.com/foundry-rs/foundry/tree/master/crates/anvil) - A powerful solidity scripting environment akin to [foundry scripts](https://book.getfoundry.sh/guides/scripting-with-solidity) - Build tooling to create a smooth interface between your Solidity scripts and TypeScript code ```typescript ``` Tevm runs in all environments - [All modern browsers](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API#browser_compatibility) - [Node.js >=18](https://nodejs.org/en) - [Bun](https://bun.sh) ## Try it out Try out our [online frontend example on stackblitz](https://stackblitz.com/~/github.com/evmts/tevm-vite-wagmi-example) ## Visit [Docs](https://tevm.sh/) 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` ```solidity // 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. ```typescript import { HelloWorld } from "./HelloWorld.sol"; console.log(HelloWorld.abi); console.log(HelloWorld.bytecode); ``` 3. Initialize a [Tevm memory client](../packages/memory-client/docs/functions/createMemoryClient.md) and execute your Script using the [`EthGetTransactionReceiptHandler`](../packages/actions/docs/type-aliases/EthGetTransactionReceiptHandler.md) action ```typescript import { HelloWorld } from "./HelloWorld.sol"; import { createMemoryClient } from "tevm"; const client = createMemoryClient(); const result = await tevm.script(HelloWorld.read.greate("World")); console.log(result.data); // Hello world! ``` This is just a small subset of what Tevm offers. See [docs](https://tevm.sh/) 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](../CONTRIBUTING.md) for contributing information ## License 📄