From 24d9b52bc2e58b0195bf0158534362ea4df23bc7 Mon Sep 17 00:00:00 2001
From: giscafer <giscafer@outlook.com>
Date: Tue, 14 Apr 2020 17:17:15 +0800
Subject: [PATCH] fix: test property 'children' of null

---
 .../components/ledge-table-step/ledge-table-step.component.ts  | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/projects/ledge-render/src/lib/components/ledge-table-step/ledge-table-step.component.ts b/projects/ledge-render/src/lib/components/ledge-table-step/ledge-table-step.component.ts
index a5c11bae..28770729 100644
--- a/projects/ledge-render/src/lib/components/ledge-table-step/ledge-table-step.component.ts
+++ b/projects/ledge-render/src/lib/components/ledge-table-step/ledge-table-step.component.ts
@@ -57,6 +57,9 @@ export class LedgeTableStepComponent implements OnInit, AfterViewInit {
     const firstRowEl = this.elementRef.nativeElement.querySelector(
       '.first-row'
     );
+    if (!firstRowEl) {
+      return;
+    }
     const arr = [];
     const totalWidth = Array.from(firstRowEl.children).reduce(
       (total: number, c, index) => {