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Collection of comprehensive TypeScript libraries for Interaction with the Ethereum JSON RPC API and utility functions.
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npm install web3.jsREADME
Web3.js
Web3.js libraries are being sunset on March 4th, 2025. For migration guides and more details please refer to Chainsafe blog
Web3.js is a TypeScript implementation of the Ethereum JSON RPC API and related tooling maintained by ChainSafe Systems.
Installation
You can install the package either using NPM or using Yarn
If you wanna checkout latest bugfix or feature, use
npm install web3@dev
Using NPM
npm install web3
Using Yarn
yarn add web3
Getting Started
- :writing_hand: If you have questions submit an issue or join us on Discord
Prerequisites
Migration Guide
- Migration Guide from Web3.js 1.x to 4.x Breaking changes are listed in migration guide and its first step for migrating from Web3.js 1.x to 4.x. If there is any question or discussion feel free to ask in Discord, and in case of any bug or new feature request open issue or create a pull request for contributions.
Useful links
Architecture Overview
| Package | Version | License | Docs | Description |
|---|---|---|---|---|
| web3 |  |
 |
 |
:rotating_light: Entire Web3.js offering (includes all packages) |
| web3-core |  |
|
|
Core functions for web3.js packages |
| web3-errors |  |
|
|
Errors Objects |
| web3-eth |  |
|
|
Modules to interact with the Ethereum blockchain and smart contracts |
| web3-eth-abi |  |
|
|
Functions for encoding and decoding EVM in/output |
| web3-eth-accounts |  |
|
|
Functions for managing Ethereum accounts and signing |
| web3-eth-contract |  |
|
|
The contract package contained in web3-eth |
| web3-eth-ens |  |
|
|
Functions for interacting with the Ethereum Name Service |
| web3-eth-iban |  |
|
|
Functionality for converting Ethereum addressed to IBAN addressed and vice versa |
| web3-eth-personal |  |
|
|
Module to interact with the Ethereum blockchain accounts stored in the node |
| web3-net |  |
|
|
Functions to interact with an Ethereum node's network properties |
| web3-providers-http |  |
|
|
Web3.js provider for the HTTP protocol |
| web3-providers-ipc |  |
|
|
Web3.js provider for IPC |
| web3-providers-ws |  |
|
|
Web3.js provider for the Websocket protocol |
| web3-rpc-methods |  |
|
|
RPC Methods |
| web3-types |  |
|
|
Shared useable types |
| web3-utils |  |
|
|
Useful utility functions for Dapp developers |
| web3-validator |  |
|
|
Utilities for validating objects |
Package.json Scripts
| Script | Description |
|---|---|
| clean | Uses rimraf to remove dist/ |
| build | Uses tsc to build all packages |
| lint | Uses eslint to lint all packages |
| lint:fix | Uses eslint to check and fix any warnings |
| format | Uses prettier to format the code |
| test | Uses jest to run unit tests in each package |
| test:integration | Uses jest to run tests under /test/integration in each package |
| test:unit | Uses jest to run tests under /test/unit in each package |
| test:manual:long-connection-ws | Runs manual tests for keeping a long WebSocket connection |
| test:manual | Runs manual tests under test/manual in the web3 package |
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