Quickstart

import { fetchQuote, swapFromEvm } from "@mayanfinance/swap-sdk";
import type { Signer, TransactionResponse } from "ethers";

const EXPLORER = "https://explorer-api.mayan.finance";

export async function swapUsdcToSol(
  signer: Signer,             // ethers v6 Signer connected to a provider
  destinationAddress: string, // a Solana address
) {
  const swapperAddress = await signer.getAddress();

  const quotes = await fetchQuote({
    amountIn64: "100000000",
    fromChain: "arbitrum",
    fromToken: "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    toChain: "solana",
    toToken: "0x0000000000000000000000000000000000000000",
    slippageBps: "auto",
  });

  const quote = quotes[0];
  if (!quote) throw new Error("No route available for this pair.");

  console.log(
    `Expecting ${quote.expectedAmountOut} SOL in about ${quote.clientEta} via ${quote.type}`
  );

  const tx = (await swapFromEvm(
    quote,
    swapperAddress,
    destinationAddress,
    null,   // referrerAddresses
    signer,
    null,   // permit
    null,   // overrides
    null,   // payload
  )) as TransactionResponse;

  // Poll until the swap reaches a terminal status.
  while (true) {
    const res = await fetch(`${EXPLORER}/v3/swap/trx/${tx.hash}`);
    const swap = await res.json();

    if (swap.clientStatus && swap.clientStatus !== "INPROGRESS") {
      return { status: swap.clientStatus, toAmount: swap.toAmount };
    }

    await new Promise((r) => setTimeout(r, 2000));
  }
}