Bump deps and improve getRecentPriorityFee for Orca (#68)

* Add Jito tip support and priority fee tweaks

Introduce Jito tipping utilities and wire them into Solana swap flow, plus improve priority-fee retrieval.

- Add packages/swapper/src/chain/solana/jito.ts: new JITO_TIP_ACCOUNTS, fetchTipFloorLamports(), getJitoBudget(), and createJitoTipInstruction() to compute/construct Jito tips (with a minimum tip fallback and recommended split logic).
- Add tests packages/swapper/src/mayan/solana.test.ts covering getJitoBudget() behavior and createJitoTipInstruction() correctness.
- Update tx_builder.ts: let getRecentPriorityFee accept lockedWritableAccounts when calling connection.getRecentPrioritizationFees(), and use the desired percentile index (with bounds) when computing a recommended fee.
- Wire Jito into swap construction (mayan/solana.ts): fetch tip floor earlier, append a Jito tip transfer when applicable, then fetch recent blockhash and build the MessageV0 with the swapper as fee payer. Adjust imports accordingly.
- Update orca/provider.ts to pass the Whirlpool program address as a locked writable account when querying recent priority fees.

These changes enable optional on-chain tipping to Jito, make priority-fee estimation respect locked accounts and percentile selection, and include unit tests for the new Jito helpers.

* bump packages

* Cache Jito tip PublicKeys and use randomInt

Cache JITO tip account PublicKey instances and use node:crypto.randomInt for selection instead of recreating PublicKey objects on each call. Add a JitoTipFloorEntry interface and cast the fetched JSON to improve typing for fetchTipFloorLamports. Also add the required randomInt import. These changes reduce allocations and improve type safety when creating Jito tip transfer instructions.

* Update AGENTS.md

* remove jito support

Author: 0xh3rman

AGENTS.md

@@ -19,7 +19,10 @@
 - TypeScript strict mode; ES2020+/ESNext modules.
 - 2‑space indent, double quotes, named exports when practical.
 - Files: kebab‑case; tests end with `.test.ts`; entry files `index.ts`.
-- Follow .windsurf style guide (imports grouped, explicit types for public APIs).
+- Group imports; use explicit types for public APIs.
+- Use `node:crypto` (`randomInt`) instead of `Math.random()` when selecting from security‑relevant sets (e.g. tip accounts, signers).
+- Type all external API responses with explicit interfaces; never leave `fetch` JSON as `any`.
+- Pre‑compute expensive objects (e.g. `PublicKey`) at module level when the inputs are static constants.
 
 ## Testing Guidelines
 - Jest + `ts-jest` (Node env, ESM enabled).

package.json

@@ -29,8 +29,8 @@
     "overrides": {
       "@types/jest": "30.0.0",
       "jest": "30.2.0",
-      "ts-jest": "29.4.5",
+      "ts-jest": "29.4.6",
       "typescript": "^5.8.2"
     }
   }
-}
+}

packages/swapper/package.json

@@ -18,19 +18,19 @@
     "@mayanfinance/swap-sdk": "12.2.5",
     "@mysten/sui": "1.35.0",
     "@orca-so/whirlpools": "6.0.0",
-    "@orca-so/whirlpools-client": "6.0.0",
+    "@orca-so/whirlpools-client": "6.2.0",
     "@orca-so/whirlpools-core": "3.0.0",
     "@panoraexchange/swap-sdk": "^1.3.1",
     "@solana-program/token-2022": "0.6.1",
     "@solana/instructions": "5.0.0",
     "@solana/kit": "5.0.0",
-    "@solana/spl-token": "0.4.13",
-    "@solana/web3.js": "1.98.0",
+    "@solana/spl-token": "0.4.14",
+    "@solana/web3.js": "1.98.4",
     "@ston-fi/api": "0.30.0",
     "@ston-fi/sdk": "2.7.0",
     "@ton/ton": "16.1.0",
-    "@types/bn.js": "5.1.6",
-    "bn.js": "5.2.1",
+    "@types/bn.js": "5.2.0",
+    "bn.js": "5.2.2",
     "js-sha3": "0.9.3"
   },
   "files": [

packages/swapper/src/chain/solana/tx_builder.ts

@@ -1,6 +1,7 @@
 import {
     Connection,
     ComputeBudgetProgram,
+    PublicKey,
     TransactionInstruction,
     VersionedTransaction,
     Transaction,
@@ -14,9 +15,10 @@ export async function getRecentBlockhash(connection: Connection, commitment?: "c
     return await connection.getLatestBlockhash(commitment || "confirmed");
 }
 
-export async function getRecentPriorityFee(connection: Connection): Promise<number> {
+export async function getRecentPriorityFee(connection: Connection, lockedWritableAccounts?: PublicKey[]): Promise<number> {
     try {
-        const recentFees = await connection.getRecentPrioritizationFees();
+        const config = lockedWritableAccounts ? { lockedWritableAccounts } : undefined;
+        const recentFees = await connection.getRecentPrioritizationFees(config);
 
         if (!recentFees || recentFees.length === 0) {
             return DEFAULT_COMPUTE_UNIT_PRICE_MICRO_LAMPORTS;
@@ -31,11 +33,11 @@ export async function getRecentPriorityFee(connection: Connection): Promise<numb
             return DEFAULT_COMPUTE_UNIT_PRICE_MICRO_LAMPORTS;
         }
 
-        const medianIndex = Math.floor(fees.length * (PRIORITY_FEE_PERCENTILE / 100));
-        const medianFee = fees[medianIndex];
+        const percentileIndex = Math.floor(fees.length * (PRIORITY_FEE_PERCENTILE / 100));
+        const percentileFee = fees[Math.min(percentileIndex, fees.length - 1)];
 
         const recommendedFee = Math.max(
-            Math.ceil(medianFee * 1.2),
+            Math.ceil(percentileFee * 1.2),
             1000
         );
 

packages/swapper/src/mayan/solana.ts

@@ -42,7 +42,6 @@ async function prepareSolanaSwapTransaction(
         feePayer: string,
     }
 }> {
-    // Fetch instructions and blockhash in parallel
     const [swapData, { blockhash, lastValidBlockHeight }] = await Promise.all([
         createSwapFromSolanaInstructions(
             quote, swapperWalletAddress, destinationAddress,
@@ -52,19 +51,17 @@ async function prepareSolanaSwapTransaction(
         getRecentBlockhash(connection, DEFAULT_COMMITMENT),
     ]);
 
-    let { instructions, signers, lookupTables } = swapData;
-
     if (quote.gasless) {
         throw new Error("Gasless swaps are not currently supported");
     }
 
+    const { instructions, signers, lookupTables } = swapData;
+
     const swapper = new PublicKey(swapperWalletAddress);
-    const feePayer = swapper;
 
-    // Use MessageV0.compile as per the latest SDK pattern
     const message = MessageV0.compile({
         instructions,
-        payerKey: feePayer,
+        payerKey: swapper,
         recentBlockhash: blockhash,
         addressLookupTableAccounts: lookupTables,
     });
@@ -79,7 +76,7 @@ async function prepareSolanaSwapTransaction(
             blockhash,
             lastValidBlockHeight,
             isVersionedTransaction: true,
-            feePayer: feePayer.toBase58(),
+            feePayer: swapper.toBase58(),
         }
     };
 }

packages/swapper/src/orca/provider.ts

@@ -45,6 +45,7 @@ import {
     getOracleAddress,
     getTickArrayAddress,
     getWhirlpoolAddress,
+    WHIRLPOOL_PROGRAM_ADDRESS,
     type Whirlpool,
 } from "@orca-so/whirlpools-client";
 import {
@@ -236,7 +237,9 @@ export class OrcaWhirlpoolProvider implements Protocol {
             return this.priorityFeeCache.value;
         }
 
-        const value = await getRecentPriorityFee(this.connection);
+        const value = await getRecentPriorityFee(this.connection, [
+            new PublicKey(WHIRLPOOL_PROGRAM_ADDRESS),
+        ]);
         this.priorityFeeCache = {
             value,
             expiresAt: now + 3_000,