Adds presign function to 0x v4 SDK

src/sdk/common/types.ts

@@ -48,4 +48,5 @@ export interface TransactionOverrides {
   type?: number;
   accessList?: any;
   customData?: Record<string, any>;
+  ccipReadEnabled?: boolean;
 }

src/sdk/v4/NftSwapV4.ts

@@ -66,7 +66,7 @@ import {
 import { getWrappedNativeToken } from '../../utils/addresses';
 import { DIRECTION_MAPPING, OrderStatusV4, TradeDirection } from './enums';
 import { CONTRACT_ORDER_VALIDATOR } from './properties';
-import { ETH_ADDRESS_AS_ERC20 } from './constants';
+import { ETH_ADDRESS_AS_ERC20, PRESIGNED_SIGNATURE } from './constants';
 import { ZERO_AMOUNT } from '../../utils/eth';
 import { arrayify } from '@ethersproject/bytes';
 
@@ -283,6 +283,52 @@ class NftSwapV4 implements INftSwapV4 {
     throw new Error('unsupport order');
   };
 
+  /**
+   * Orders can be simultaneously "signed" and listed on-chain using the presignOrder function.
+   * This is an on-chain action and requires gas. Orders can only be signed by the maker address specified in the order.
+   * The pre-sign functions emit the entire order as an event, so that the order is easily indexable by subgraphs and thus easily discoverable without the need for an off-chain database.
+   * If an order has been pre-signed, it can be filled by providing a “null” signature with the PRESIGNED signature type
+   * If you prefer off-chain order signatures, use the regular signOrder function
+   * @param order 0x order that requires a signature
+   * @param txOverrides (optional) Ethers transaction overrides
+   * @returns An on-chain transaction that returns the signed order after awaiting the tx being mined
+   */
+  presignOrder = async (
+    order: NftOrderV4,
+    txOverrides?: TransactionOverrides
+  ): Promise<{ signedOrder: SignedNftOrderV4; tx: ContractTransaction }> => {
+    if ('erc721Token' in order) {
+      const signed: SignedNftOrderV4 = {
+        ...order,
+        signature: PRESIGNED_SIGNATURE,
+      };
+      const presignErc721OrderTx = await this.exchangeProxy.preSignERC721Order(
+        order,
+        {
+          ...txOverrides,
+        }
+      );
+      return {
+        tx: presignErc721OrderTx,
+        signedOrder: signed,
+      };
+    } else if ('erc1155Token' in order) {
+      const signed: SignedNftOrderV4 = {
+        ...order,
+        signature: PRESIGNED_SIGNATURE,
+      };
+      const presignErc1155OrderTx =
+        await this.exchangeProxy.preSignERC1155Order(order, {
+          ...txOverrides,
+        });
+      return {
+        tx: presignErc1155OrderTx,
+        signedOrder: signed,
+      };
+    }
+    throw new Error('unsupport order');
+  };
+
   /**
    * Batch fill NFT sell orders
    * Can be used by taker to fill multiple NFT sell orders atomically.

src/sdk/v4/constants.ts

@@ -60,3 +60,11 @@ export const ETH_ADDRESS_AS_ERC20 =
 
 export const NATIVE_TOKEN_ADDRESS_AS_ERC20 =
   '0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee';
+
+// https://github.com/0xProject/protocol/blob/refactor/nft-orders/contracts/zero-ex/contracts/src/features/libs/LibSignature.sol#L42-L61
+export const PRESIGNED_SIGNATURE = {
+  signatureType: 4, // Presigned id
+  v: 0,
+  r: '0',
+  s: '0',
+};