$ npm install

$ node examples/1_accounts.js

$ node examples/2_read_smart_contract.js

$ node examples/3_send_signed_transaction.js

$ node examples/4_deploy_contract.js

$ node examples/5_write_contract.js

$ node examples/6_contract_event_stream.js

$ node examples/7_inspecting_blocks.js

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const { ethers } = require("ethers");

const provider = new ethers.providers.Web3Provider(window.ethereum)
async function connectToMetamask(){
   await provider.send("eth_requestAccounts", []);
}
connectToMetamask();
const signer = provider.getSigner();

const ERC20_ABI = [
   "function getAll() public view returns(uint [] memory)",
   "function get(uint position) public view returns(uint)",
   "function add(uint id, string memory activityName, string memory authorName, string memory activityType) public",
   "function length() public view returns(uint)",
]

const address = '0xf0c707dafa300d8bd19bbfed42b86469d50b022f';

const contractInstance = new ethers.Contract(address, ERC20_ABI, provider);

const main = async () => {
   const name = await contractInstance.name();
   console.log("name: " , name);
}

main();