Update README.md and add error handler in loadImage

README.md

@@ -24,6 +24,9 @@ Tesseract.js wraps an [emscripten](https://github.com/kripken/emscripten) [port]
 
 
 # Installation
+
+**Tesseract.js v2 alpha is now available!! Check [HERE](https://github.com/naptha/tesseract.js) for more information.**
+
 Tesseract.js works with a `<script>` tag via local copy or CDN, with webpack and Browserify via `npm`, and on Node.js via `npm`. [Check out the docs](#docs) for a full treatment of the API.
 
 ## &lt;script />

dist/tesseract.js

@@ -253,9 +253,11 @@ if (process.env.TESS_ENV === "development") {
 exports.defaultOptions = defaultOptions;
 
 exports.spawnWorker = function spawnWorker(instance, workerOptions) {
-    if (window.Blob && window.URL) {
-        var blob = new Blob(['importScripts("' + workerOptions.workerPath + '");']);
-        var worker = new Worker(window.URL.createObjectURL(blob));
+    if (Blob && URL) {
+        var blob = new Blob(['importScripts("' + workerOptions.workerPath + '");'], {
+            type: 'application/javascript'
+        });
+        var worker = new Worker(URL.createObjectURL(blob));
     } else {
         var worker = new Worker(workerOptions.workerPath);
     }
@@ -290,20 +292,26 @@ function loadImage(image, cb) {
             im.onload = function (e) {
                 return loadImage(im, cb);
             };
+            im.onerror = function (e) {
+                throw e;
+            };
             return;
         } else {
             var xhr = new XMLHttpRequest();
             xhr.open('GET', image, true);
             xhr.responseType = "blob";
+
             xhr.onload = function (e) {
-                return loadImage(xhr.response, cb);
+                if (xhr.status >= 400) {
+                    throw new Error('Fail to get image as Blob');
+                } else {
+                    loadImage(xhr.response, cb);
+                }
             };
             xhr.onerror = function (e) {
-                if (/^https?:\/\//.test(image) && !/^https:\/\/crossorigin.me/.test(image)) {
-                    console.debug('Attempting to load image with CORS proxy');
-                    loadImage('https://crossorigin.me/' + image, cb);
-                }
+                throw e;
             };
+
             xhr.send(null);
             return;
         }
@@ -313,6 +321,9 @@ function loadImage(image, cb) {
         fr.onload = function (e) {
             return loadImage(fr.result, cb);
         };
+        fr.onerror = function (e) {
+            throw e;
+        };
         fr.readAsDataURL(image);
         return;
     } else if (image instanceof Blob) {

src/browser/index.js

@@ -54,7 +54,7 @@ function loadImage(image, cb){
             var im = new Image
             im.src = image;
             im.onload = e => loadImage(im, cb);
-            //im.onerror = e => ?; TODO handle error
+            im.onerror = e => { throw e; };
             return
         }else{
             var xhr = new XMLHttpRequest();
@@ -63,12 +63,12 @@ function loadImage(image, cb){
             
             xhr.onload = e => {
                 if (xhr.status >= 400){
-                    //TODO handle error
+                  throw new Error('Fail to get image as Blob');
                 }else{
                     loadImage(xhr.response, cb);
                 }
             };
-            //xhr.onerror = e => ?; TODO handle error
+            xhr.onerror = e => { throw e; }; 
             
             xhr.send(null)
             return
@@ -77,7 +77,7 @@ function loadImage(image, cb){
         // files
         var fr = new FileReader()
         fr.onload = e => loadImage(fr.result, cb);
-        //fr.onerror = e => ?; TODO handle error
+        fr.onerror = e => { throw e; }; 
         fr.readAsDataURL(image)
         return
     }else if(image instanceof Blob){