import { AxelarQueryAPI } from '@axelar-network/axelarjs-sdk';

const api: AxelarGMPRecoveryAPI = new AxelarGMPRecoveryAPI({
  environment: Environment.TESTNET,
});

const transaction = await addGasToStellarChain({
    senderAddress: 'GCXXX...', // The contract address that initiates gateway contract call
    messageId: 'msg-123', // tx message id
    tokenAddress: "", // the default value will be the native token, XLM.
    tokenAmount: '10000000', // the amount to add
    refundAddress: 'GXXX...' // Address to receive unused gas
});

// Sign with wallet (e.g., Freighter)
const signedTx = await window.freighter.signTransaction(transaction);