From 1419290e7a8c589cd911ff08ee5cfdd8d9678b91 Mon Sep 17 00:00:00 2001
From: Nathan Kunicki <me@nathankunicki.com>
Date: Sat, 18 Nov 2017 16:47:14 +0000
Subject: [PATCH] Lint and build in single step

---
 package.json          | 3 +--
 src/bittmappeditor.ts | 2 +-
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/package.json b/package.json
index 9e59f62..4dbb7d3 100644
--- a/package.json
+++ b/package.json
@@ -3,8 +3,7 @@
   "version": "0.0.1",
   "description": "BittMapp - A monochrome bitmap editor",
   "scripts": {
-    "build": "tsc",
-    "lint": "tslint -c tslint.json \"src/**/*.ts\""
+    "build": "tslint -c tslint.json \"src/**/*.ts\" && tsc"
   },
   "author": "Nathan Kunicki <me@nathankunicki.com>",
   "license": "MIT",
diff --git a/src/bittmappeditor.ts b/src/bittmappeditor.ts
index 7918f1d..dd82520 100644
--- a/src/bittmappeditor.ts
+++ b/src/bittmappeditor.ts
@@ -72,7 +72,7 @@ class BittMappEditor {
 
         this._context = this.canvas.getContext("2d") as CanvasRenderingContext2D;
 
-        const deviceRatio: number = window.devicePixelRatio;
+        const deviceRatio: number = window.devicePixelRatio || 1;
         const backingStoreRatio: number = (this._context as any).backingStorePixelRatio as number || 1;
 
         this._scale = deviceRatio / backingStoreRatio;