From 11958fadcb017398bce656ed8f9203d7ebf0fa8d Mon Sep 17 00:00:00 2001
From: meld-cp <18450687+meld-cp@users.noreply.github.com>
Date: Fri, 10 Feb 2023 01:29:42 +0000
Subject: [PATCH] add array test to prevent runtime error

---
 src/data-set.ts | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/data-set.ts b/src/data-set.ts
index 4dabd1e..32312fd 100644
--- a/src/data-set.ts
+++ b/src/data-set.ts
@@ -3,10 +3,13 @@ export class DataSet extends Array<DataSetRow> {
 	public columns:string[] = [];
 
 	constructor( columnNames:string[] ){
-
 		super();
+		
+		//console.debug( "DataSet:", {columnNames} );
 
-		this.columns = columnNames.map( cn => cn.trim() );
+		if ( Array.isArray( columnNames ) && columnNames.length > 0 ){
+			this.columns = columnNames.map( cn => cn.trim() );
+		}
 
 	}