create-contract.js

import Web3 from "web3";

// we import the abi file created after 
// the migration using truffle.
import Persssist from '../../public/abis/Persssist.json';


async initializeContractLocal() {
  if (window.ethereum) this.web3 = new Web3(window.ethereum)
  else if (window.web3) this.web3 = new Web3(window.web3.currentProvider);
  if(!this.web3) throw 'Web3 not initialized';
  
  const networkId = await this.web3.eth.net.getId();
  const networkData = (PersssistLocal as any).networks[networkId];
  if (networkData) {
    this.contract = new this.web3.eth.Contract(
      (Persssist as any).abi,
      networkData.address
    )
  }
}