Removing use of notify to update progress bar

src/js/parser/javascript/node.js

@@ -66,7 +66,6 @@ export default class Node {
       if (this.state.cancelRender) {
         deferred.reject('Render cancelled');
       } else {
-        deferred.notify(1 - this.state.renderCounter / this.state.maxCounter);
         deferred.resolve.apply(this, result);
       }
     }, 1);
@@ -99,8 +98,6 @@ export default class Node {
 
   startRender() {
     this.state.renderCounter++;
-
-    this.state.maxCounter = Math.max(this.state.maxCounter, this.state.renderCounter);
   }
 
   doneRender() {

src/js/parser/javascript/parser_state.js

@@ -0,0 +1,26 @@
+export default class ParserState {
+  constructor(progress) {
+    this.groupCounter = 1;
+    this.cancelRender = false;
+    this.warnings = [];
+    this._renderCounter = 0;
+    this._maxCounter = 0;
+    this._progress = progress;
+  }
+
+  get renderCounter() {
+    return this._renderCounter;
+  }
+
+  set renderCounter(value) {
+    if (value > this.renderCounter) {
+      this._maxCounter = value;
+    }
+
+    this._renderCounter = value;
+
+    if (this._maxCounter && !this.cancelRender) {
+      this._progress.style.width = ((1 - this.renderCounter / this._maxCounter) * 100).toFixed(2) + '%';
+    }
+  }
+}