Как оценить газ с помощью Web3 и JavaScript

const fs = require('fs');
const path = require('path');
const Web3API = require('web3');
const main = async () => {
const web3 = new Web3API(new Web3API.providers.HttpProvider('https://mainnet.infura.io'));
const tokenAddress = "0x..";
const fromAddress = "0x..";
const toAddress = "0x..";
// ABI to transfer ERC20 Token
let abi = JSON.parse(fs.readFileSync(path.join(__dirname, '.', 'main_contract.json'), 'utf-8'));
// Get ERC20 Token contract instance
let contract = new web3.eth.Contract(abi, tokenAddress, {
from: fromAddress
});
// calculate ERC20 token amount
let amount = 1;
let tokenAmount = web3.utils.toWei(amount.toString(), 'ether')
// Will call estimate the gas a method execution will take when executed in the EVM without.
let estimateGas = await web3.eth.estimateGas({
"value": '0x0', // Only tokens
"data": contract.methods.transfer(toAddress, tokenAmount).encodeABI(),
"from": fromAddress,
"to": toAddress
});
console.log({
tokenAmount: tokenAmount,
estimateGas: estimateGas * 1.10
});
};
main();