feat: add hyperliquid

Author: jxom

.changeset/some-oranges-exist.md

@@ -0,0 +1,5 @@
+---
+"viem": patch
+---
+
+Added `hyperliquid` chain.

src/chains/definitions/hyperEvm.ts

@@ -0,0 +1,19 @@
+import { defineChain } from '../../utils/chain/defineChain.js'
+
+export const hyperEvm = /*#__PURE__*/ defineChain({
+  id: 999,
+  name: 'HyperEVM',
+  nativeCurrency: { name: 'HYPE', symbol: 'HYPE', decimals: 18 },
+  blockExplorers: {
+    default: {
+      name: 'HyperEVMScan',
+      url: 'https://hyperevmscan.io',
+    },
+  },
+  rpcUrls: {
+    default: {
+      http: ['https://rpc.hyperliquid.xyz/evm'],
+    },
+  },
+  testnet: false,
+})

src/chains/index.ts

@@ -271,6 +271,7 @@ export { humanodeTestnet5 } from './definitions/humanodeTestnet5.js'
 export { hychain } from './definitions/hychain.js'
 export { hychainTestnet } from './definitions/hychainTestnet.js'
 export { hyperliquidEvmTestnet } from './definitions/hyperliquidEvmTestnet.js'
+export { hyperEvm, hyperEvm as hyperliquid } from './definitions/hyperEvm.js'
 export { icbNetwork } from './definitions/icbNetwork.js'
 export { idchain } from './definitions/idchain.js'
 export { immutableZkEvm } from './definitions/immutableZkEvm.js'