Publish

- @0x/contracts-integrations@2.7.28
 - @0x/asset-swapper@6.2.0

contracts/integrations/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/contracts-integrations",
-    "version": "2.7.27",
+    "version": "2.7.28",
     "private": true,
     "engines": {
         "node": ">=6.12"
@@ -93,7 +93,7 @@
         "typescript": "3.0.1"
     },
     "dependencies": {
-        "@0x/asset-swapper": "^6.1.0",
+        "@0x/asset-swapper": "^6.2.0",
         "@0x/base-contract": "^6.2.18",
         "@0x/contracts-asset-proxy": "^3.7.7",
         "@0x/contracts-erc1155": "^2.1.25",

docs/basics/allowances.rst

@@ -2,11 +2,6 @@
 Allowances
 ###############################
 
-.. _Allowance Target Address: https://github.com/0xProject/protocol/blob/development/packages/contract-addresses/addresses.json#L40
+Both maker and taker allowance should be be set directly on the `Exchange Proxy contract <./addresses.html#exchange-v4>`_.
 
-After the official release, allowances will be set directly on the Exchange V4 Proxy contract.
-Presently, while we are in beta, allowances should be set on the `Allowance Target <./addresses.html#exchange-v4>`_.
-
-The motivation for eliminating the separate Allowance Target in the official release is
-to reduce transaction costs. Depending on the operational overhead for our integrators,
-we may support allowances on both the Exchange V4 & the Allowance Target after the official release, which is slated for January, 2021.
+For takers, legacy allowances set on the `Allowance Target <./addresses.html#exchange-v4>`_ will continue to work during this transition period but will suffer a gas penalty. It's highly encouraged to migrate allowances over to the Exchange Proxy as soon as possible to avoid interruption.

packages/asset-swapper/CHANGELOG.json

@@ -1,4 +1,14 @@
 [
+    {
+        "version": "6.2.0",
+        "changes": [
+            {
+                "note": "drop curve Y and BUSD pools",
+                "pr": 161
+            }
+        ],
+        "timestamp": 1614645844
+    },
     {
         "version": "6.1.0",
         "changes": [

packages/asset-swapper/CHANGELOG.md

@@ -5,6 +5,10 @@ Edit the package's CHANGELOG.json file only.
 
 CHANGELOG
 
+## v6.2.0 - _March 2, 2021_
+
+    * drop curve Y and BUSD pools (#161)
+
 ## v6.1.0 - _February 24, 2021_
 
     * Filter MultiHop where second source is not present (#138)

packages/asset-swapper/package.json

@@ -1,6 +1,6 @@
 {
     "name": "@0x/asset-swapper",
-    "version": "6.1.0",
+    "version": "6.2.0",
     "engines": {
         "node": ">=6.12"
     },

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

@@ -170,8 +170,8 @@ export const POOLS = {
     curve_compound: '0xa2b47e3d5c44877cca798226b7b8118f9bfb7a56', // 0.Compound
     // 1.USDT is dead
     curve_PAX: '0x06364f10b501e868329afbc005b3492902d6c763', // 2.PAX
-    curve_y: '0x45f783cce6b7ff23b2ab2d70e416cdb7d6055f51', // 3.Y
-    curve_BUSD: '0x79a8c46dea5ada233abaffd40f3a0a2b1e5a4f27', // 4.BUSD
+    // 3. 0x45f783cce6b7ff23b2ab2d70e416cdb7d6055f51 y-pool is dead
+    // 4. 0x79a8c46dea5ada233abaffd40f3a0a2b1e5a4f27 BUSD is dead
     curve_sUSD: '0xa5407eae9ba41422680e2e00537571bcc53efbfd', // 5.sUSD
     curve_renBTC: '0x93054188d876f558f4a66b2ef1d97d16edf0895b', // 6.ren
     curve_sBTC: '0x7fc77b5c7614e1533320ea6ddc2eb61fa00a9714', // 7.sbtc
@@ -233,22 +233,6 @@ export const MAINNET_CURVE_INFOS: { [name: string]: CurveInfo } = {
         tokens: [TOKENS.DAI, TOKENS.USDC, TOKENS.USDT, TOKENS.PAX],
         metaToken: undefined,
     },
-    [POOLS.curve_y]: {
-        exchangeFunctionSelector: CurveFunctionSelectors.exchange_underlying,
-        sellQuoteFunctionSelector: CurveFunctionSelectors.get_dy_underlying,
-        buyQuoteFunctionSelector: CurveFunctionSelectors.get_dx_underlying,
-        poolAddress: POOLS.curve_y,
-        tokens: [TOKENS.DAI, TOKENS.USDC, TOKENS.USDT, TOKENS.TUSD],
-        metaToken: undefined,
-    },
-    [POOLS.curve_BUSD]: {
-        exchangeFunctionSelector: CurveFunctionSelectors.exchange_underlying,
-        sellQuoteFunctionSelector: CurveFunctionSelectors.get_dy_underlying,
-        buyQuoteFunctionSelector: CurveFunctionSelectors.get_dx_underlying,
-        poolAddress: POOLS.curve_BUSD,
-        tokens: [TOKENS.DAI, TOKENS.USDC, TOKENS.USDT, TOKENS.BUSD],
-        metaToken: undefined,
-    },
     [POOLS.curve_sUSD]: {
         exchangeFunctionSelector: CurveFunctionSelectors.exchange_underlying,
         sellQuoteFunctionSelector: CurveFunctionSelectors.get_dy_underlying,
@@ -555,8 +539,6 @@ export const DEFAULT_GAS_SCHEDULE: Required<FeeSchedule> = {
             case POOLS.curve_aave:
                 return 800e3;
             case POOLS.curve_PAX:
-            case POOLS.curve_y:
-            case POOLS.curve_BUSD:
                 return 850e3;
             // case POOLS.curve_seth:
             default: