diff --git a/src/utils/rasterize.js b/src/utils/rasterize.js
index f917029..a6d4a9a 100644
--- a/src/utils/rasterize.js
+++ b/src/utils/rasterize.js
@@ -1,76 +1,84 @@
-/*
- * decaffeinate suggestions:
- * DS102: Remove unnecessary code created because of implicit returns
- * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
- */
-// Exemplar script for generating documents with Phantom.js.
-// https://raw.githubusercontent.com/ariya/phantomjs/master/examples/rasterize.js
-// Converted to CoffeeScript by hacksalot
-
 /* eslint-disable */
+(function() {
+  // Exemplar script for generating documents with Phantom.js.
+  // https://raw.githubusercontent.com/ariya/phantomjs/master/examples/rasterize.js
+  // Converted to CoffeeScript by hacksalot
+  "use strict";
+  var address, output, page, pageHeight, pageWidth, size, system;
 
-'use strict';
-let output, size;
-const page = require('webpage').create();
-const system = require('system');
-let address = (output = (size = null));
+  page = require('webpage').create();
 
-if ((system.args.length < 3) || (system.args.length > 5)) {
+  system = require('system');
 
-  console.log('Usage: rasterize.js URL filename [paperwidth*paperheight|paperformat] [zoom]');
-  console.log('  paper (pdf output) examples: "5in*7.5in", "10cm*20cm", "A4", "Letter"');
-  console.log('  image (png/jpg output) examples: "1920px" entire page, window width 1920px');
-  console.log('                                   "800px*600px" window, clipped to 800x600');
-  phantom.exit(1);
+  address = output = size = null;
 
-} else {
-
-  address = system.args[1];
-  output = system.args[2];
-  page.viewportSize = {width: 600, height: 600};
-
-  if ((system.args.length > 3) && (system.args[2].substr(-4) === '.pdf')) {
-
-    size = system.args[3].split('*');
-    page.paperSize =
-      size.length === 2 ? {width: size[0], height: size[1], margin: '0px'}
-      : {format: system.args[3], orientation: 'portrait', margin: '1cm'};
-
-  } else if ((system.args.length > 3) && (system.args[3].substr(-2) === 'px')) {
-    let pageHeight, pageWidth;
-    size = system.args[3].split('*');
-    if (size.length === 2) {
-      pageWidth = parseInt(size[0], 10);
-      pageHeight = parseInt(size[1], 10);
-      page.viewportSize = {width: pageWidth, height: pageHeight};
-      page.clipRect = {top: 0, left: 0, width: pageWidth, height: pageHeight};
-    } else {
-      // eslint-ignore-next-line no-console
-      console.log('size:', system.args[3]);
-      pageWidth = parseInt(system.args[3], 10);
-      pageHeight = parseInt((pageWidth * 3)/4, 10); // it's as good an assumption as any
-      // eslint-ignore-next-line no-console
-      console.log('pageHeight:', pageHeight);
-      page.viewportSize = {width: pageWidth, height: pageHeight};
-    }
-  }
-
-  if (system.args.length > 4) {
-    page.zoomFactor = system.args[4];
-  }
-
-  page.open(address, function(status) {
-    if (status !== 'success') {
-      console.log('Unable to load the address!');
-      phantom.exit(1);
-      return;
-    } else {
-      return window.setTimeout(function() {
-        page.render(output);
-        phantom.exit();
+  if (system.args.length < 3 || system.args.length > 5) {
+    console.log('Usage: rasterize.js URL filename [paperwidth*paperheight|paperformat] [zoom]');
+    console.log('  paper (pdf output) examples: "5in*7.5in", "10cm*20cm", "A4", "Letter"');
+    console.log('  image (png/jpg output) examples: "1920px" entire page, window width 1920px');
+    console.log('                                   "800px*600px" window, clipped to 800x600');
+    phantom.exit(1);
+  } else {
+    address = system.args[1];
+    output = system.args[2];
+    page.viewportSize = {
+      width: 600,
+      height: 600
+    };
+    if (system.args.length > 3 && system.args[2].substr(-4) === ".pdf") {
+      size = system.args[3].split('*');
+      page.paperSize = size.length === 2 ? {
+        width: size[0],
+        height: size[1],
+        margin: '0px'
+      } : {
+        format: system.args[3],
+        orientation: 'portrait',
+        margin: '1cm'
+      };
+    } else if (system.args.length > 3 && system.args[3].substr(-2) === "px") {
+      size = system.args[3].split('*');
+      if (size.length === 2) {
+        pageWidth = parseInt(size[0], 10);
+        pageHeight = parseInt(size[1], 10);
+        page.viewportSize = {
+          width: pageWidth,
+          height: pageHeight
+        };
+        page.clipRect = {
+          top: 0,
+          left: 0,
+          width: pageWidth,
+          height: pageHeight
+        };
+      } else {
+        console.log("size:", system.args[3]);
+        pageWidth = parseInt(system.args[3], 10);
+        pageHeight = parseInt(pageWidth * 3 / 4, 10); // it's as good an assumption as any
+        console.log("pageHeight:", pageHeight);
+        page.viewportSize = {
+          width: pageWidth,
+          height: pageHeight
+        };
       }
-      , 200);
     }
-  });
-}
-/* esline-enable */
+    if (system.args.length > 4) {
+      page.zoomFactor = system.args[4];
+    }
+    page.open(address, function(status) {
+      if (status !== 'success') {
+        console.log('Unable to load the address!');
+        phantom.exit(1);
+      } else {
+        return window.setTimeout(function() {
+          page.render(output);
+          phantom.exit();
+        }, 200);
+      }
+    });
+  }
+
+}).call(this);
+
+/* eslint-enable */
+//# sourceMappingURL=rasterize.js.map