fix exchangeToNativeDecimal function

src/Unit/Exchange/callGenerators/utils.ts

@@ -99,5 +99,5 @@ export async function toNativeDecimals(token: AddressLike, amount: BigNumberish,
     const contract = ERC20__factory.connect(token, provider)
     decimals = BigInt(await contract.decimals())
   }
-  return BigInt(amount) * (BigInt(10) ** decimals) / (BigInt(10) ** 8n)
+  return BigInt(amount) * (BigInt(10) ** decimals)
 }

src/Unit/Exchange/generateSwapCalldata.ts

@@ -77,7 +77,7 @@ export async function generateSwapCalldataWithUnit({
     amount,
     minReturnAmount,
     receiverAddress,
-    useContractBalance: walletBalance < BigInt(amount),
+    useContractBalance: walletBalance < await exchangeToNativeDecimals(path.first().assetIn, amount, unit.provider),
     path,
     wethAddress,
     curveRegistryAddress,