npm install @fraxfinance/layerzero-v2-upgradeable

import { OptionsBuilder } from "@fraxfinance/layerzero-v2-upgradeable/oapp/contracts/oapp/libs/OptionsBuilder.sol";
import { SendParam, MessagingFee, IOFT } from "@fraxfinance/layerzero-v2-upgradeable/oapp/contracts/oft/interfaces/IOFT.sol";
 
uint256 amount = 1e18;
// frxUSD OFT - Bridging FROM Universal chain
address oft = 0x80eede496655fb9047dd39d9f418d5483ed600df;
// Ethereum - choose destination EID from https://github.com/FraxFinance/frax-oft-upgradeable/blob/master/scripts/L0Config.json
uint32 dstEid = 30101;
 
bytes memory options = OptionsBuilder.newOptions();
SendParam memory sendParam = SendParam({
        dstEid: dstEid,
        to: bytes32(uint256(uint160(msg.sender))),
        amountLD: amount,
        minAmountLD: amount,
        extraOptions: options,
        composeMsg: '',
        oftCmd: ''
});
MessagingFee memory fee = IOFT(_oft).quoteSend(sendParam, false);
IOFT(_oft).send{value: fee.nativeFee}(
    sendParam,
    fee,
    payable(msg.sender)
);

const abi = []; // load ABI from https://etherscan.io/address/0x909DBdE1eBE906Af95660033e478D59EFe831fED#code
  {
    inputs: [
      {
        components: [
          { internalType: "uint32", name: "dstEid", type: "uint32" },
          { internalType: "bytes32", name: "to", type: "bytes32" },
          { internalType: "uint256", name: "amountLD", type: "uint256" },
          { internalType: "uint256", name: "minAmountLD", type: "uint256" },
          { internalType: "bytes", name: "extraOptions", type: "bytes" },
          { internalType: "bytes", name: "composeMsg", type: "bytes" },
          { internalType: "bytes", name: "oftCmd", type: "bytes" },
        ],
        internalType: "struct SendParam",
        name: "_sendParam",
        type: "tuple",
      },
      { internalType: "bool", name: "_payInLzToken", type: "bool" },
    ],
    name: "quoteSend",
    outputs: [
      {
        components: [
          { internalType: "uint256", name: "nativeFee", type: "uint256" },
          { internalType: "uint256", name: "lzTokenFee", type: "uint256" },
        ],
        internalType: "struct MessagingFee",
        name: "msgFee",
        type: "tuple",
      },
    ],
    stateMutability: "view",
    type: "function",
  },
  {
    inputs: [
      {
        components: [
          { internalType: "uint32", name: "dstEid", type: "uint32" },
          { internalType: "bytes32", name: "to", type: "bytes32" },
          { internalType: "uint256", name: "amountLD", type: "uint256" },
          { internalType: "uint256", name: "minAmountLD", type: "uint256" },
          { internalType: "bytes", name: "extraOptions", type: "bytes" },
          { internalType: "bytes", name: "composeMsg", type: "bytes" },
          { internalType: "bytes", name: "oftCmd", type: "bytes" },
        ],
        internalType: "struct SendParam",
        name: "_sendParam",
        type: "tuple",
      },
      {
        components: [
          { internalType: "uint256", name: "nativeFee", type: "uint256" },
          { internalType: "uint256", name: "lzTokenFee", type: "uint256" },
        ],
        internalType: "struct MessagingFee",
        name: "_fee",
        type: "tuple",
      },
      { internalType: "address", name: "_refundAddress", type: "address" },
    ],
    name: "send",
    outputs: [
      {
        components: [
          { internalType: "bytes32", name: "guid", type: "bytes32" },
          { internalType: "uint64", name: "nonce", type: "uint64" },
          {
            components: [
              { internalType: "uint256", name: "nativeFee", type: "uint256" },
              { internalType: "uint256", name: "lzTokenFee", type: "uint256" },
            ],
            internalType: "struct MessagingFee",
            name: "fee",
            type: "tuple",
          },
        ],
        internalType: "struct MessagingReceipt",
        name: "msgReceipt",
        type: "tuple",
      },
      {
        components: [
          { internalType: "uint256", name: "amountSentLD", type: "uint256" },
          {
            internalType: "uint256",
            name: "amountReceivedLD",
            type: "uint256",
          },
        ],
        internalType: "struct OFTReceipt",
        name: "oftReceipt",
        type: "tuple",
      },
    ],
    stateMutability: "payable",
    type: "function",
];
 
import * as dotenv from "dotenv";
import { ethers } from "ethers";
import { Options } from "@layerzerolabs/lz-v2-utilities";
 
dotenv.config();
const PK: string = process.env.PK!;
 
const oft = "0x80eede496655fb9047dd39d9f418d5483ed600df"; // frxUSD on universal chain
 
async function main() {
  const url = /* ENTER RPC URL HERE */;
  const provider = new ethers.providers.JsonRpcProvider(url);
  const signer = new ethers.Wallet(PK, provider);
  const contract = new ethers.Contract(oft, abi, signer);
 
  // basic send
  const dstEid = 30101;
  const to = ethers.utils.zeroPad(signer.address, 32);
  const options = Options.newOptions().toHex().toString();
  const composeMsg = "0x";
 
  const amount = 10 ** 18;
  const abiCoder = new ethers.utils.AbiCoder();
  const minAmountLD = 0;
 
  const sendParam = [
    dstEid,
    to,
    amount.toString(),
    minAmountLD.toString(),
    options,
    composeMsg,
    "0x",
  ];
 
  // get native fee
  const [nativeFee] = await contract.quoteSend(sendParam, false);
 
  // execute the send
  await contract.send(sendParam, [nativeFee, 0], signer.address, {
    value: nativeFee,
  });
}
 
main();