read_smart_contract.js

const { ethers } = require("ethers")

const INFURA_ID = 'd0c4db9e7e0041c3bace607d958c5e1c'
const provider = new ethers.providers.JsonRpcProvider(`https://mainnet.infura.io/v3/${INFURA_ID}`)

const ERC20_ABI = [
    "function name() view returns (string)",
    "function symbol() view returns (string)",
    "function totalSupply() view returns (uint256)",
    "function balanceOf(address) view returns (uint)",
]

const address = '0x6B175474E89094C44Da98b954EedeAC495271d0F' //DAI Contract
const contract = new ethers.Contract(address, ERC20_ABI, provider)

const main = async () => {
    const name = await contract.name()
    const symbol = await contract.symbol()
    const totalSupply = await contract.totalSupply()

    console.log(`Reading from ${address}\n`)
    console.log(`"name : ", ${name}`)
    console.log(`Symbol : ${symbol}`) 
    console.log(`Total Supply : ${totalSupply}\n`) 

    const balance = await contract.balanceOf('0x6c6Bc977E13Df9b0de53b251522280BB72383700')
    console.log(`Balance Returned: ${balance}`)
    console.log(`Formatted Balance: ${ethers.utils.formatEther(balance)}\n`)
}

main()