@ethersproject/abstract-signer

What is @ethersproject/abstract-signer?

@ethersproject/abstract-signer is a part of the ethers.js library, which provides a collection of utilities for interacting with the Ethereum blockchain. The abstract-signer module specifically deals with the abstraction of signing transactions and messages, allowing developers to create custom signers or use existing ones to sign data securely.

What are @ethersproject/abstract-signer's main functionalities?

Signing Transactions

This feature allows you to sign a transaction using a wallet instance. The code sample demonstrates how to create a wallet, define a transaction, and sign it.

const { Wallet } = require('@ethersproject/wallet');
const { parseEther } = require('@ethersproject/units');
const { JsonRpcProvider } = require('@ethersproject/providers');

async function signTransaction() {
  const provider = new JsonRpcProvider('https://mainnet.infura.io/v3/YOUR_INFURA_PROJECT_ID');
  const wallet = new Wallet('YOUR_PRIVATE_KEY', provider);
  const tx = {
    to: '0xADDRESS',
    value: parseEther('0.01'),
    gasLimit: 21000,
    gasPrice: parseUnits('10', 'gwei')
  };
  const signedTx = await wallet.signTransaction(tx);
  console.log(signedTx);
}
signTransaction();

Signing Messages

This feature allows you to sign a message using a wallet instance. The code sample demonstrates how to create a wallet and sign a simple message.

const { Wallet } = require('@ethersproject/wallet');

async function signMessage() {
  const wallet = new Wallet('YOUR_PRIVATE_KEY');
  const message = 'Hello, Ethereum!';
  const signedMessage = await wallet.signMessage(message);
  console.log(signedMessage);
}
signMessage();

Connecting to a Provider

This feature allows you to connect a wallet to a provider. The code sample demonstrates how to create a wallet and connect it to an Ethereum provider.

const { Wallet } = require('@ethersproject/wallet');
const { JsonRpcProvider } = require('@ethersproject/providers');

async function connectToProvider() {
  const provider = new JsonRpcProvider('https://mainnet.infura.io/v3/YOUR_INFURA_PROJECT_ID');
  const wallet = new Wallet('YOUR_PRIVATE_KEY', provider);
  console.log(wallet.address);
}
connectToProvider();

Other packages similar to @ethersproject/abstract-signer

web3

web3.js is a collection of libraries that allow you to interact with a local or remote Ethereum node using HTTP, IPC, or WebSocket. It provides similar functionalities for signing transactions and messages but is generally considered to have a steeper learning curve compared to ethers.js.

eth-sig-util

eth-sig-util is a utility library for signing and verifying Ethereum signatures. It provides lower-level utilities for handling Ethereum-specific signing tasks, making it more suitable for developers who need fine-grained control over the signing process.

truffle-hdwallet-provider

truffle-hdwallet-provider is a provider for Ethereum that uses a Hierarchical Deterministic (HD) wallet to sign transactions. It is often used in conjunction with the Truffle framework for deploying smart contracts. It offers similar functionalities but is more tightly integrated with the Truffle suite of tools.

README

Abstract Signer

This sub-module is part of the ethers project.

It is an abstraction of an Ethereum account, which may be backed by a private key, signing service (such as Geth or Parity with key managment enabled, or a dedicated signing service such as Clef), hardware wallets, etc.

For more information, see the documentation.

Importing

Most users will prefer to use the umbrella package, but for those with more specific needs, individual components can be imported.

const {

    Signer,
    VoidSigner,

    // Types
    ExternallyOwnedAccount

} = require("@ethersproject/abstract-signer");

License

MIT License