Merge pull request #460 from paraswap/fix/1223-log-negative-liquidity

BACK-1223: Add error logging for UniswapV3 like negative liquidity issues

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@paraswap/dex-lib",
-  "version": "2.28.1",
+  "version": "2.28.2",
   "main": "build/index.js",
   "types": "build/index.d.ts",
   "repository": "https://github.com/paraswap/paraswap-dex-lib",

src/dex/algebra/algebra.ts

@@ -495,6 +495,11 @@ export class Algebra extends SimpleExchange implements IDex<AlgebraData> {
       const zeroForOne = token0 === _srcAddress ? true : false;
 
       if (state.liquidity <= 0n) {
+        if (state.liquidity < 0) {
+          this.logger.error(
+            `${this.dexKey}-${this.network}: ${pool.poolAddress} pool has negative liquidity: ${state.liquidity}. Find with key: ${pool.mapKey}`,
+          );
+        }
         this.logger.trace(`pool have 0 liquidity`);
         return null;
       }

src/dex/pancakeswap-v3/pancakeswap-v3.ts

@@ -596,6 +596,11 @@ export class PancakeswapV3
           const state = states[i];
 
           if (state.liquidity <= 0n) {
+            if (state.liquidity < 0) {
+              this.logger.error(
+                `${this.dexKey}-${this.network}: ${pool.poolAddress} pool has negative liquidity: ${state.liquidity}. Find with key: ${pool.mapKey}`,
+              );
+            }
             this.logger.trace(`pool have 0 liquidity`);
             return null;
           }

src/dex/uniswap-v3/uniswap-v3.ts

@@ -620,6 +620,11 @@ export class UniswapV3
           const state = states[i];
 
           if (state.liquidity <= 0n) {
+            if (state.liquidity < 0) {
+              this.logger.error(
+                `${this.dexKey}-${this.network}: ${pool.poolAddress} pool has negative liquidity: ${state.liquidity}. Find with key: ${pool.mapKey}`,
+              );
+            }
             this.logger.trace(`pool have 0 liquidity`);
             return null;
           }