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Typechain

TypeChain is a TypeScript code generator that reads Ethereum smart-contract ABI files or supported Truffle and Hardhat artifacts and produces typed bindings for contract libraries such as ethers.js, Truffle and Web3.js.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Typechain — OpenViST project profile in Developer Tools.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use TypeChain when a TypeScript smart-contract project needs generated typings for an ABI and a supported contract-library target.

Who it is for

  • TypeScript dApp developers who work with Ethereum smart contracts.
  • Teams that want typed contract methods and event interfaces generated from ABI files.

Documented uses

  • Generate TypeScript bindings from contract ABIs or supported artifacts.
  • Add typed contract interfaces to a TypeScript application.
  • Use IDE support and static typing to help avoid calls to nonexistent contract methods.
Before you choose

Requirements & limits

The repository is public and identifies an MIT license.

  • The core package and the desired target package are installed separately.
  • The README says generated code requires TypeScript 4.3 or newer.
  • TypeChain is described as legacy software, with critical fixes possible but no active development expected.
  • The README recommends considering Abitype, Wagmi and Viem, which parse ABIs within TypeScript's type system.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Generate bindings from ABI files with the CLI

Create TypeScript contract typings from project ABI files for a selected supported target.

Before you start

  • Install the TypeChain core package as a development dependency.
  • Install the target package you plan to use, such as @typechain/ethers-v6.
  • Use TypeScript 4.3 or newer for generated code.
  • Have ABI files or supported Truffle/Hardhat artifacts in the project.

Steps

  1. Install TypeChain with the command below and install the desired target package.

    Documented command
    npm install --save-dev typechain

  2. Run typechain --target=your_target with an optional glob pattern for the ABI files.

  3. Optionally specify --out-dir to choose where generated files go.

  4. Import the generated typings in the TypeScript project and add generation to the build process.

Expected outcome

Generated TypeScript typings or wrappers for the selected contract-library target.

Guide limitations

  • TypeChain rewrites existing generated files; the README recommends not committing them.
  • The chosen target package must be installed.
  • The project describes TypeChain as legacy software, with critical fixes possible but no expected active development.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
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Sources checked
14 October 2026
Original website title
dethcrypto/TypeChain · Official homepage title · retained in its source language
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