From 0eb1816c22cc9b18313c8af6e281bd0aad4ebea5 Mon Sep 17 00:00:00 2001
From: johba <johba@harb-dev-box>
Date: Sun, 5 Apr 2026 16:14:50 +0000
Subject: [PATCH] =?UTF-8?q?fix:=20parse=20slot0=20response=20as=20array=20?=
 =?UTF-8?q?=E2=80=94=20viem=20v2=20returns=20tuples,=20not=20named=20objec?=
 =?UTF-8?q?ts=20(#2)?=
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viem v2 readContract returns multi-output functions as plain arrays.
slot0() tick is at index [1], not .tick property. Handles both array
and record shapes for forward compatibility.
---
 web-app/src/views/CheatsView.vue | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/web-app/src/views/CheatsView.vue b/web-app/src/views/CheatsView.vue
index c1b6328..f3888b2 100644
--- a/web-app/src/views/CheatsView.vue
+++ b/web-app/src/views/CheatsView.vue
@@ -555,12 +555,14 @@ async function loadLiquidityStats({ notify = false }: { notify?: boolean } = {})
       functionName: 'slot0',
     });
 
-    let currentTick: number | null = null;
-    if (isRecord(slot0Response) && typeof slot0Response.tick === 'number') {
+    // viem v2 returns multi-output calls as arrays, not named objects.
+    // slot0() returns [sqrtPriceX96, tick, observationIndex, ...] — tick is at index 1.
+    let currentTick: number;
+    if (Array.isArray(slot0Response) && slot0Response.length >= 2) {
+      currentTick = Number(slot0Response[1]);
+    } else if (isRecord(slot0Response) && typeof slot0Response.tick === 'number') {
       currentTick = slot0Response.tick;
-    }
-
-    if (currentTick === null) {
+    } else {
       throw new Error('Unable to determine current pool tick');
     }