feat: support parsing transactions on berachain

Author: hzhu

README.md

@@ -100,13 +100,13 @@
     </td>    
     <td style="width:100px; text-align:center;">
       <div align="center">
-        <img alt="coming soon" src="https://i.imgur.com/CexTjqF.png" width="22"/>
-        <br>🔜
+        <img alt="coming soon" src="https://www.berachain.com/icon.svg" width="24"/>
+        <br>Berachain
       </div>
     </td>
     <td style="width:100px; text-align:center;">
       <div align="center">
-        <img alt="coming soon" src="https://i.imgur.com/c5GLXZm.png" width="22"/>
+        <img alt="coming soon" src="https://i.imgur.com/CexTjqF.png" width="22"/>
         <br>🔜
       </div>
     </td>

src/constants.ts

@@ -12,6 +12,7 @@ import {
   unichain,
   optimism,
   avalanche,
+  berachain,
   worldchain,
 } from "viem/chains";
 import type { SupportedChainId } from "./types";
@@ -62,6 +63,7 @@ export const NATIVE_SYMBOL_BY_CHAIN_ID: { [key in SupportedChainId]: string } =
     [optimism.id]: optimism.nativeCurrency.symbol,
     [arbitrum.id]: arbitrum.nativeCurrency.symbol,
     [avalanche.id]: avalanche.nativeCurrency.symbol,
+    [berachain.id]: berachain.nativeCurrency.symbol,
     [worldchain.id]: worldchain.nativeCurrency.symbol,
   };
 

src/tests/index.test.ts

@@ -17,6 +17,7 @@ import {
   optimism,
   mantle,
   worldchain,
+  berachain,
 } from "viem/chains";
 import { test, expect } from "vitest";
 import { parseSwap } from "../index";
@@ -1353,3 +1354,33 @@ test("parse a swap on Unichain (WETH for USDC) with AllowanceHolder", async () =
     },
   });
 });
+
+// https://berascan.com/tx/0xaf644cef00ca79ee0365218d02cf238c2b4a5e9a1b1e7cfccaee1542fb19211b
+test("parse a swap on Berachain (WETH for WBERA) with AllowanceHolder", async () => {
+  const publicClient = createPublicClient({
+    chain: berachain,
+    transport: http(
+      `https://berachain-mainnet.g.alchemy.com/v2/${process.env.ALCHEMY_API_KEY}`
+    ),
+  }) as PublicClient<Transport, Chain>;
+
+  const transactionHash = `0xaf644cef00ca79ee0365218d02cf238c2b4a5e9a1b1e7cfccaee1542fb19211b`;
+
+  const result = await parseSwap({
+    publicClient,
+    transactionHash,
+  });
+
+  expect(result).toEqual({
+    tokenIn: {
+      symbol: "WETH",
+      amount: "0.0025",
+      address: "0x2F6F07CDcf3588944Bf4C42aC74ff24bF56e7590",
+    },
+    tokenOut: {
+      symbol: "WBERA",
+      amount: "1.116831193710334426",
+      address: "0x6969696969696969696969696969696969696969",
+    },
+  });
+});

src/types.ts

@@ -12,6 +12,7 @@ import {
   optimism,
   avalanche,
   worldchain,
+  berachain,
   unichain,
 } from "viem/chains";
 
@@ -39,6 +40,7 @@ export type SupportedChainId =
   | typeof unichain.id
   | typeof optimism.id
   | typeof avalanche.id
+  | typeof berachain.id
   | typeof worldchain.id;
 
 export interface EnrichLogsArgs {

src/utils/index.ts

@@ -13,6 +13,7 @@ import {
   optimism,
   unichain,
   avalanche,
+  berachain,
   worldchain,
 } from "viem/chains";
 import { NATIVE_SYMBOL_BY_CHAIN_ID, NATIVE_TOKEN_ADDRESS } from "../constants";
@@ -41,6 +42,7 @@ export function isChainIdSupported(
     optimism.id,
     unichain.id,
     avalanche.id,
+    berachain.id,
     worldchain.id,
   ];
   return supportedChainIds.includes(chainId);