MCarlomagno
/ metamask.ts
Last active
July 19, 2023 22:36
🦊🪝 React hook for Metamask extension using ethers.js. The hook includes some of the most common use cases such as wallet connection, events listening, transaction, addresses and signer management.
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| import * as ethers from 'ethers'; | |
| import { | |
| ExternalProvider, | |
| JsonRpcSigner, | |
| Network, | |
| Web3Provider | |
| } from '@ethersproject/providers'; | |
| import { useState } from 'react'; | |
| declare global { |
MCarlomagno
/ send_message.sol
Last active
March 21, 2022 00:30
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| pragma solidity >=0.7.0 <0.9.0; | |
| contract Chat { | |
| // ... | |
| // We can use an autoincremental id for each new message. | |
| uint lastMessageId; | |
| function sendMessage(string _text) public { |