From 065ca1b0042188e8c858162381e7f703db1355de Mon Sep 17 00:00:00 2001
From: 0student <0student@gmail.com>
Date: Thu, 15 Aug 2019 18:23:20 -0700
Subject: [PATCH] options.sizeMultiply,
 `${obj}`.toString().indexOf('SVGElement')

const multiple = (options.sizeMultiply || 1)

const isElement = obj => obj instanceof HTMLElement || obj instanceof SVGElement || (`${obj}`.toString().indexOf('SVGElement') > -1);
---
 src/saveSvgAsPng.js | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/saveSvgAsPng.js b/src/saveSvgAsPng.js
index d0496ba..36da1f6 100644
--- a/src/saveSvgAsPng.js
+++ b/src/saveSvgAsPng.js
@@ -18,7 +18,7 @@
     svg: 'image/svg+xml'
   };
 
-  const isElement = obj => obj instanceof HTMLElement || obj instanceof SVGElement;
+  const isElement = obj => obj instanceof HTMLElement || obj instanceof SVGElement || (`${obj}`.toString().indexOf('SVGElement') > -1);
   const requireDomNode = el => {
     if (!isElement(el)) throw new Error(`an HTMLElement or SVGElement is required; got ${el}`);
   };
@@ -309,13 +309,15 @@
       canvg
     } = options || {};
 
+    const multiple = (options.sizeMultiply || 1);
+
     const convertToPng = ({src, width, height}) => {
       const canvas = document.createElement('canvas');
       const context = canvas.getContext('2d');
-      const pixelRatio = window.devicePixelRatio || 1;
-
-      canvas.width = width * pixelRatio;
-      canvas.height = height * pixelRatio;
+      const pixelRatio = (window.devicePixelRatio || 1) * multiple;
+      
+      canvas.width = (width * pixelRatio);
+      canvas.height = (height * pixelRatio);
       canvas.style.width = `${canvas.width}px`;
       canvas.style.height = `${canvas.height}px`;
       context.setTransform(pixelRatio, 0, 0, pixelRatio, 0, 0);