Add sei mainnet and testnet chain (#1513)

* Add sei testnet chain

* Add sei testnet chain

* add sei mainnet

* add sei mainnet

* Update src/types.ts

Co-authored-by: Ryan Ghods <ralxzryan@gmail.com>

* lint

---------

Co-authored-by: Ryan Ghods <ralxzryan@gmail.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "opensea-js",
-  "version": "7.1.10",
+  "version": "7.1.11",
   "description": "TypeScript SDK for the OpenSea marketplace helps developers build new experiences using NFTs and our marketplace data",
   "license": "MIT",
   "author": "OpenSea Developers",

src/types.ts

@@ -123,6 +123,8 @@ export enum Chain {
   Solana = "solana",
   /** Zora */
   Zora = "zora",
+  /** Sei */
+  Sei = "sei",
 
   // Testnet Chains
   // ⚠️NOTE: When adding to this list, also add to the util function `isTestChain`
@@ -148,6 +150,8 @@ export enum Chain {
   SolanaDevnet = "soldev",
   /** Zora Sepolia */
   ZoraSepolia = "zora_sepolia",
+  /** Sei Testnet */
+  SeiTestnet = "sei_testnet",
 }
 
 /**

src/utils/utils.ts

@@ -212,6 +212,10 @@ export const getChainId = (chain: Chain) => {
       return "7777777";
     case Chain.ZoraSepolia:
       return "999999999";
+    case Chain.Sei:
+      return "1329";
+    case Chain.SeiTestnet:
+      return "1328";
     default:
       throw new Error(`Unknown chainId for ${chain}`);
   }
@@ -257,6 +261,10 @@ export const getWETHAddress = (chain: Chain) => {
     case Chain.Zora:
     case Chain.ZoraSepolia:
       return "0x4200000000000000000000000000000000000006";
+    case Chain.Sei:
+      return "0xe30fedd158a2e3b13e9badaeabafc5516e95e8c7";
+    case Chain.SeiTestnet:
+      return "0x3921ea6cf927be80211bb57f19830700285b0ada";
     default:
       throw new Error(`Unknown WETH address for ${chain}`);
   }
@@ -321,6 +329,7 @@ export const isTestChain = (chain: Chain): boolean => {
     case Chain.OptimismSepolia:
     case Chain.SolanaDevnet:
     case Chain.ZoraSepolia:
+    case Chain.SeiTestnet:
       return true;
     default:
       return false;