🔌 TypeScript bindings for Ethereum smart contracts
Alternatives To Typechain
Project NameStarsDownloadsRepos Using ThisPackages Using ThisMost Recent CommitTotal ReleasesLatest ReleaseOpen IssuesLicenseLanguage
Openzeppelin Contracts22,967512,24718 hours ago75July 28, 2023201mitJavaScript
OpenZeppelin Contracts is a library for secure smart contract development.
14 hours ago418gpl-3.0C++
Solidity, the Smart Contract Programming Language
a month ago106otherJavaScript
Mastering Ethereum, by Andreas M. Antonopoulos, Gavin Wood
Sismo Badges16,254
16 days ago6mitTypeScript
Contracts of the Sismo Badge Minting Protocol
Truffle13,9992,4421,4384 days ago503July 25, 2023515mitTypeScript
A tool for developing smart contracts. Crafted with the finest cacaos.
Full Blockchain Solidity Course Py10,031
3 months ago215mit
Ultimate Solidity, Blockchain, and Smart Contract - Beginner to Expert Full Course | Python Edition
Full Blockchain Solidity Course Js9,692
a month ago56
Learn Blockchain, Solidity, and Full Stack Web3 Development with Javascript
Defi Developer Road Map8,957
12 days agootherJavaScript
DeFi Developer roadmap is a curated Developer handbook which includes a list of the best tools for DApps development, resources and references!
Wtf Solidity8,265
4 days ago11otherSolidity
我最近在重新学solidity,巩固一下细节,也写一个“WTF Solidity极简入门”,供小白们使用,每周更新1-3讲。官网: https://wtf.academy
Smart Contract Best Practices7,088
16 days ago21
A guide to smart contract security best practices
Alternatives To Typechain
Select To Compare

Alternative Project Comparisons


🔌 TypeScript bindings for Ethereum smart contracts

Build Status Downloads Software License Join our discord!

💸 Enjoy using TypeChain? Consider funding development via GitCoin 💸

Used by the best:
Maker DAO Uniswap AAVE
Optimism zkSync Kyber Arbitrum

Features ⚡

  • static typing - you will never call not existing method again
  • IDE support - works with any IDE supporting Typescript
  • extendible - work with many different tools: ethers.js, hardhat, truffle, Web3.js or you can create your own target
  • frictionless - works with simple, JSON ABI files as well as with Truffle/Hardhat artifacts


npm install --save-dev typechain

You will also need to install a desired target for example @typechain/ethers-v6. Learn more about targets

Take note, that code generated by TypeChain requires TypeScript version 4.3 or newer.

Packages 📦

Package Version Description Examples
typechain npm Core package -
@typechain/ethers-v5 npm Ethers ver 5 support (⚠️ requires TS 4.0 >=) example
@typechain/ethers-v6 npm Ethers ver 6 support (⚠️ requires TS 4.0 >=) example
@typechain/starknet.js npm Starknet.js ver 3.9
@typechain/truffle-v5 npm Truffle ver 5 support example
@typechain/web3-v1 npm Web3 ver 1 support example
@typechain/hardhat npm Hardhat plugin example-ethers example-truffle
@typechain/truffle-v4 npm Truffle ver 4 support (deprecated) example
@typechain/ethers-v4 npm Ethers ver 4 support (deprecated) example


TypeChain generates only TypeScript typings (d.ts) files, if you're looking for "opinionated", "batteries included" solution check out our new project: eth-sdk. It generates typesafe, ready to use ethers.js wrappers and uses etherscan/sourcify to automatically get ABIs based only on smart contract addresses. Under the hood, eth-sdk relies on TypeChain.



Note: If you use hardhat just use hardhat plugin.

typechain --target=(ethers-v5|ethers-v6|truffle-v4|truffle-v5|web3-v1|path-to-custom-target) [glob]
  • glob - pattern that will be used to find ABIs, remember about adding quotes: typechain "**/*.json", examples: ./abis/**/*.abi, ./abis/?(Oasis.abi|OasisHelper.abi).
  • --target - ethers-v5, ethers-v6, truffle-v4, truffle-v5, web3-v1 or path to your custom target. Typechain will try to load package named: @typechain/${target}, so make sure that desired package is installed.
  • --out-dir (optional) - put all generated files to a specific dir.
  • --always-generate-overloads (optional) - some targets won't generate unnecessary types for overloaded functions by default, this option forces to always generate them
  • --discriminate-types (optional) - ethers-v5 and ethers-v6 will add an artificial field contractName that helps discriminate between contracts

TypeChain always will rewrite existing files. You should not commit them. Read more in FAQ section.


typechain --target ethers-v6 --out-dir app/contracts './node_modules/neufund-contracts/build/contracts/*.json'


Getting started 📚


Interacting with blockchain in Javascript is a pain. Developers need to remember not only a name of a given smart contract method or event but also it's full signature. This wastes time and might introduce bugs that will be triggered only in runtime. TypeChain solves these problems (as long as you use TypeScript).

How does it work?

TypeChain is a code generator - provide ABI file and name of your blockchain access library (ethers/truffle/web3.js) and you will get TypeScript typings compatible with a given library.

Step by step guide

Install TypeChain with npm install --save-dev typechain and install desired target.

Run typechain --target=your_target (you might need to make sure that it's available in your path if you installed it only locally), it will automatically find all .abi files in your project and generate Typescript classes based on them. You can specify your glob pattern: typechain --target=your_target "**/*.abi.json". node_modules are always ignored. We recommend git ignoring these generated files and making typechain part of your build process.

That's it! Now, you can simply import typings, check out our examples for more details.

Targets 🎯

Ethers.js v6

Use ethers-v6 target to generate wrappers for ethers.js lib. To make it work great with Hardhat, use Hardhat plugin.

If you use nodenext aka node16modules flip the flag --node16-modules to generate compatible typings.

If you are using Ethers.js v5, use the @typechain/ethers-v5 target.

If you're using Ethers.js v4, you can find legacy @typechain/ethers-v4 target on npm and commit db551b5.

Truffle v5

Truffle target is great when you use truffle contracts already. Check out truffle-typechain-example for more details.

Now you can simply use your contracts as you did before and get full type safety, yay!

Web3 v1

Generates typings for contracts compatible with latest stable Web3.js version. Typings for library itself are now part of the Web3 1.0.0 library so nothing additional is needed. For now it needs explicit cast as shown here, this will be fixed after improving official typings.

NatSpec support

If you provide solidity artifacts rather than plain ABIs as an input, TypeChain can generate NatSpec comments directly to your typings which enables simple access to docs while coding.

Your own target

This might be useful when you're creating a library for users of your smartcontract and you don't want to lock yourself into any API provided by Web3 access providing library. You can generate basically any code (even for different languages than TypeScript!) that based on smartcontract's ABI.


Q: Should I commit generated files to my repository?

A: NO — we believe that no generated files should go to git repository. You should git ignore them and make typechain run automatically for example in post install hook in package.json:


When you update ABI, just regenerate files with TypeChain and Typescript compiler will find any breaking changes for you.

Q: How do I customize generated code?

A: You can create your own target and generate basically any code.

Q: Generated files won't match current codestyle of my project :(

A: We will automatically format generated classes with prettier to match your coding preferences (just make sure to use .prettierrc file).

Furthermore, TypeChain will silent eslint and tslint errors for generated files.

Usage as API

import { runTypeChain, glob } from 'typechain'

async function main() {
  const cwd = process.cwd()
  // find all files matching the glob
  const allFiles = glob(cwd, [`${config.paths.artifacts}/!(build-info)/**/+([a-zA-Z0-9_]).json`])

  const result = await runTypeChain({
    filesToProcess: allFiles,
    outDir: 'out directory',
    target: 'target name',


If you don't care about incremental generation just specify the same set of files for filesToProcess and allFiles. For incremental generation example read the source code of hardhat plugin.


Check out our contributing guidelines


Kris Kaczor (krzkaczor) MIT | Github | Twitter

Popular Ethereum Projects
Popular Smart Contracts Projects
Popular Blockchain Categories
Related Searches

Get A Weekly Email With Trending Projects For These Categories
No Spam. Unsubscribe easily at any time.
Smart Contracts