Ethers

npm install @maticnetwork/maticjs-ethers

import { use } from '@maticnetwork/maticjs'
import { Web3ClientPlugin } from '@maticnetwork/maticjs-ethers'

// install ethers plugin
use(Web3ClientPlugin)

import { POSClient,use } from "@maticnetwork/maticjs"
import { Web3ClientPlugin } from '@maticnetwork/maticjs-ethers'
import { providers, Wallet } from "ethers";


// install web3 plugin
use(Web3ClientPlugin);

const parentProvider = new providers.JsonRpcProvider(rpc.parent);
const childProvider = new providers.JsonRpcProvider(rpc.child);

const posClient = new POSClient();
await posClient.init({
    network: 'testnet',
    version: 'amoy',
    parent: {
      provider: new Wallet(privateKey, parentProvider),
      defaultConfig: {
        from : fromAddress
      }
    },
    child: {
      provider: new Wallet(privateKey, childProvider),
      defaultConfig: {
        from : fromAddress
      }
    }
});