Web3.js

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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

npm install web3

yarn add web3

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.

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

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