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- @0x/asset-swapper@16.54.0

packages/asset-swapper/CHANGELOG.json

@@ -1,4 +1,14 @@
 [
+    {
+        "version": "16.54.0",
+        "changes": [
+            {
+                "note": "Add true VIP support for eligible RFQt swaps",
+                "pr": 458
+            }
+        ],
+        "timestamp": 1649215576
+    },
     {
         "version": "16.53.0",
         "changes": [

packages/asset-swapper/CHANGELOG.md

@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v16.54.0 - _April 6, 2022_
+
+    * Add true VIP support for eligible RFQt swaps (#458)
+
 ## v16.53.0 - _March 31, 2022_
 
     * Adds support for STG/USDC pool on Curve Mainnet (#451)

packages/asset-swapper/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/asset-swapper",
-    "version": "16.53.0",
+    "version": "16.54.0",
     "engines": {
         "node": ">=6.12"
     },

packages/asset-swapper/src/quote_consumers/exchange_proxy_swap_quote_consumer.ts

@@ -42,6 +42,7 @@ import {
     FinalUniswapV3FillData,
     LiquidityProviderFillData,
     MooniswapFillData,
+    NativeRfqOrderFillData,
     OptimizedMarketBridgeOrder,
     OptimizedMarketOrder,
     UniswapV2FillData,
@@ -333,6 +334,48 @@ export class ExchangeProxySwapQuoteConsumer implements SwapQuoteConsumerBase {
             };
         }
 
+        // RFQT VIP
+        if (
+            [ChainId.Mainnet, ChainId.Polygon].includes(this.chainId) &&
+            !isToETH &&
+            !isFromETH &&
+            quote.orders.every(o => o.type === FillQuoteTransformerOrderType.Rfq)
+        ) {
+            const rfqOrdersData = quote.orders.map(o => o.fillData as NativeRfqOrderFillData);
+            const fillAmountPerOrder = (() => {
+                // Don't think order taker amounts are clipped to actual sell amount
+                // (the last one might be too large) so figure them out manually.
+                let remaining = sellAmount;
+                const fillAmounts = [];
+                for (const o of quote.orders) {
+                    const fillAmount = BigNumber.min(o.takerAmount, remaining);
+                    fillAmounts.push(fillAmount);
+                    remaining = remaining.minus(fillAmount);
+                }
+                return fillAmounts;
+            })();
+            const callData =
+                quote.orders.length === 1
+                    ? this._exchangeProxy
+                          .fillRfqOrder(rfqOrdersData[0].order, rfqOrdersData[0].signature, fillAmountPerOrder[0])
+                          .getABIEncodedTransactionData()
+                    : this._exchangeProxy
+                          .batchFillRfqOrders(
+                              rfqOrdersData.map(d => d.order),
+                              rfqOrdersData.map(d => d.signature),
+                              fillAmountPerOrder,
+                              true,
+                          )
+                          .getABIEncodedTransactionData();
+            return {
+                calldataHexString: callData,
+                ethAmount: ZERO_AMOUNT,
+                toAddress: this._exchangeProxy.address,
+                allowanceTarget: this._exchangeProxy.address,
+                gasOverhead: ZERO_AMOUNT,
+            };
+        }
+
         if (this.chainId === ChainId.Mainnet && isMultiplexBatchFillCompatible(quote, optsWithDefaults)) {
             return {
                 calldataHexString: this._encodeMultiplexBatchFillCalldata(