added WETH/BTRFLY pool on curve mainnet

packages/asset-swapper/src/utils/market_operation_utils/constants.ts

@@ -631,6 +631,7 @@ export const CURVE_POOLS = {
     USDP: '0x42d7025938bec20b69cbae5a77421082407f053a', // usdp
     ib: '0x2dded6da1bf5dbdf597c45fcfaa3194e53ecfeaf', // iron bank
     link: '0xf178c0b5bb7e7abf4e12a4838c7b7c5ba2c623c0', // link
+    btrflyweth: '0xf43b15ab692fde1f9c24a9fce700adcc809d5391',
     // StableSwap "open pools" (crv.finance)
     TUSD: '0xecd5e75afb02efa118af914515d6521aabd189f1',
     STABLEx: '0x3252efd4ea2d6c78091a1f43982ee2c3659cc3d1',
@@ -1004,12 +1005,27 @@ const createCurveV2MetaTriPool = (info: { tokens: string[]; pool: string; gasSch
     gasSchedule: info.gasSchedule,
 });
 
+const createCurveFactoryCryptoExchangePool = (info: { tokens: string[]; pool: string; gasSchedule: number }) => ({
+    exchangeFunctionSelector: CurveFunctionSelectors.exchange_underlying_uint256,
+    sellQuoteFunctionSelector: CurveFunctionSelectors.get_dy_uint256,
+    buyQuoteFunctionSelector: CurveFunctionSelectors.None,
+    tokens: info.tokens,
+    metaTokens: undefined,
+    poolAddress: info.pool,
+    gasSchedule: info.gasSchedule,
+});
+
 /**
  * Mainnet Curve configuration
  * The tokens are in order of their index, which each curve defines
  * I.e DaiUsdc curve has DAI as index 0 and USDC as index 1
  */
 export const CURVE_MAINNET_INFOS: { [name: string]: CurveInfo } = {
+    [CURVE_POOLS.btrflyweth]: createCurveFactoryCryptoExchangePool({
+        tokens: [MAINNET_TOKENS.WETH, MAINNET_TOKENS.BTRFLY],
+        pool: CURVE_POOLS.btrflyweth,
+        gasSchedule: 411e3,
+    }),
     [CURVE_POOLS.compound]: createCurveExchangeUnderlyingPool({
         tokens: [MAINNET_TOKENS.DAI, MAINNET_TOKENS.USDC],
         pool: CURVE_POOLS.compound,