From 2b53c69fa7738de3f5f1caa1662b3172df5514b4 Mon Sep 17 00:00:00 2001
From: Kate Hudson <k88hudson@gmail.com>
Date: Thu, 22 May 2014 13:06:47 -0400
Subject: [PATCH] Check if worksheet_id is a number and greater than 0, since 0
 is a valid worksheet id

---
 index.js | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/index.js b/index.js
index 183e5b5..138af8c 100644
--- a/index.js
+++ b/index.js
@@ -92,7 +92,10 @@ module.exports = function( ss_key, auth_id ){
     });
   }
   this.addRow = function( worksheet_id, data, cb ){
-    if( !worksheet_id ) throw new Error("Worksheet not specified.");
+    worksheet_id = parseInt(worksheet_id);
+    if (typeof worksheet_id !== 'number' || worksheet_id < 0) {
+      throw new Error('Valid worksheet not specified.');
+    }
 
     var data_xml = '<entry xmlns="http://www.w3.org/2005/Atom" xmlns:gsx="http://schemas.google.com/spreadsheets/2006/extended">' + "\n";
       Object.keys(data).forEach(function(key) {
@@ -317,4 +320,4 @@ var xmlSafeColumnName = function(val){
     if (!val) return '';
     return String(val).replace(/\s+/g, '')
         .toLowerCase();
-}
\ No newline at end of file
+}