Add browser check for PDF images

Author: diegomura

lib/image.js

@@ -3,38 +3,37 @@ PDFImage - embeds images in PDF documents
 By Devon Govett
 */
 
-import fs from 'fs';
-import JPEG from './image/jpeg';
-import PNG from './image/png';
+import fs from 'fs'
+import JPEG from './image/jpeg'
+import PNG from './image/png'
 
 class PDFImage {
   static open(src, label) {
-    let data;
+    let data
     if (Buffer.isBuffer(src)) {
-      data = src;
+      data = src
     } else if (src instanceof ArrayBuffer) {
-      data = new Buffer(new Uint8Array(src));
+      data = new Buffer(new Uint8Array(src))
     } else {
-      let match;
-      if (match = /^data:.+;base64,(.*)$/.exec(src)) {
-        data = new Buffer(match[1], 'base64');
-
-      } else {
-        data = fs.readFileSync(src);
-        if (!data) { return; }
+      let match
+      if ((match = /^data:.+;base64,(.*)$/.exec(src))) {
+        data = new Buffer(match[1], 'base64')
+      } else if (!BROWSER) {
+        data = fs.readFileSync(src)
+        if (!data) {
+          return
+        }
       }
     }
 
-    if ((data[0] === 0xff) && (data[1] === 0xd8)) {
-      return new JPEG(data, label);
-
-    } else if ((data[0] === 0x89) && (data.toString('ascii', 1, 4) === 'PNG')) {
-      return new PNG(data, label);
-
+    if (data[0] === 0xff && data[1] === 0xd8) {
+      return new JPEG(data, label)
+    } else if (data[0] === 0x89 && data.toString('ascii', 1, 4) === 'PNG') {
+      return new PNG(data, label)
     } else {
-      throw new Error('Unknown image format.');
+      throw new Error('Unknown image format.')
     }
   }
 }
 
-export default PDFImage;
+export default PDFImage