From b473c0f2e76aefd90c51152a62ef6a2fd66890ce Mon Sep 17 00:00:00 2001
From: KenTandrian <kenricktan11@gmail.com>
Date: Sun, 4 Oct 2026 20:43:07 +0700
Subject: [PATCH] fix(ui): improve type safety of line chart data

---
 libs/ui/src/lib/line-chart/line-chart.component.ts | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/libs/ui/src/lib/line-chart/line-chart.component.ts b/libs/ui/src/lib/line-chart/line-chart.component.ts
index 54b11b32c6..45ff88e339 100644
--- a/libs/ui/src/lib/line-chart/line-chart.component.ts
+++ b/libs/ui/src/lib/line-chart/line-chart.component.ts
@@ -27,6 +27,7 @@ import {
 import {
   type AnimationsSpec,
   Chart,
+  type ChartData,
   Filler,
   LinearScale,
   LineController,
@@ -167,7 +168,7 @@ export class GfLineChartComponent
       gradient.addColorStop(1, getBackgroundColor(this.colorScheme));
     }
 
-    const data = {
+    const data: ChartData<'line', (number | null)[]> = {
       labels,
       datasets: [
         {
@@ -208,7 +209,7 @@ export class GfLineChartComponent
 
         this.chart.update();
       } else {
-        this.chart = new Chart(this.chartCanvas.nativeElement, {
+        this.chart = new Chart<'line'>(this.chartCanvas.nativeElement, {
           data,
           options: {
             animations: this.isAnimated ? animations : undefined,