Use @naviprotocol/lending v2 for flash loans

README.md

@@ -34,8 +34,13 @@ npm install @alphafi/alphalend-sdk
   an ESM context or via a bundler.
 - **No `postinstall` / patches.** Earlier work-in-progress used a `patch-package`
   hook to fix `@naviprotocol/lending` under v2; that would have broken consumer
-  installs. The flash-loan helpers are now vendored (`src/vendor/naviFlashloan.ts`),
-  so installing this package runs no lifecycle scripts and pulls no Navi dependency.
+  installs. The flash-loan helpers now come from `@naviprotocol/lending@^2`
+  (a runtime dependency), which is `@mysten/sui` v2-native and import-safe — the
+  previous vendored copy has been removed. Installing this package still runs no
+  lifecycle scripts. (NAVI v2's split `.d.ts` don't resolve under
+  `moduleResolution: NodeNext`, so a small local declaration shim,
+  `src/naviprotocol-lending.d.ts`, types the flash-loan helpers; the runtime
+  bundle itself is unaffected.)
 
 ## Getting Started
 

package.json

@@ -35,6 +35,7 @@
   "dependencies": {
     "@7kprotocol/sdk-ts": "^3.4.1",
     "@cetusprotocol/aggregator-sdk": "^1.5.5",
+    "@naviprotocol/lending": "2.0.3",
     "@pythnetwork/pyth-sui-js": "^2.2.0",
     "@types/bn.js": "^5.2.0",
     "decimal.js": "^10.5.0",

src/core/flashRepay.ts

@@ -6,7 +6,7 @@ import {
   flashloanPTB,
   repayFlashLoanPTB,
   getAllFlashLoanAssets,
-} from "../vendor/naviFlashloan.js";
+} from "@naviprotocol/lending";
 import { Decimal } from "decimal.js";
 import { FlashRepayParams } from "./types.js";
 import type { AlphalendClient } from "./client.js";

src/naviprotocol-lending.d.ts

@@ -0,0 +1,41 @@
+// NAVI v2 (@naviprotocol/lending) ships ESM `.d.ts` files with extensionless
+// relative re-exports, which don't resolve under `moduleResolution: NodeNext`
+// (the runtime bundle is a single self-contained file and works fine). Declare
+// the flash-loan helpers we use so they type-resolve. Remove if NAVI fixes
+// their packaging.
+declare module "@naviprotocol/lending" {
+  type NaviTx = import("@mysten/sui/transactions").Transaction;
+  type NaviTxResult = import("@mysten/sui/transactions").TransactionResult;
+
+  export function getAllFlashLoanAssets(options?: {
+    env?: "prod" | "dev";
+    cacheTime?: number;
+    disableCache?: boolean;
+    market?: string;
+  }): Promise<
+    Array<{
+      max: string;
+      min: string;
+      assetId: number;
+      poolId: string;
+      supplierFee: number;
+      flashloanFee: number;
+      coinType: string;
+    }>
+  >;
+
+  export function flashloanPTB(
+    tx: NaviTx,
+    identifier: string,
+    amount: number | NaviTxResult,
+    options?: { env?: "prod" | "dev"; market?: string },
+  ): Promise<NaviTxResult[]>;
+
+  export function repayFlashLoanPTB(
+    tx: NaviTx,
+    identifier: string,
+    receipt: NaviTxResult | string,
+    coinObject: NaviTxResult | string,
+    options?: { env?: "prod" | "dev"; market?: string },
+  ): Promise<NaviTxResult[]>;
+}