Document.createTextNode("\u{feff}") in quote-button.js.es6 breaks the latest Opera Browser

dmitry_fedyuk · 30 يوليو 2015، 3:37م

The message in Developer Console:

Uncaught SyntaxError: Unexpected token ILLEGAL

Opera 30.0.1835.125

discourse/discourse/blob/v1.4.0.beta6/app/assets/javascripts/discourse/controllers/quote-button.js.es6#L53


      
          if (this.get('buffer') === selectedText) return;
          
          // we need to retrieve the post data from the posts collection in the topic controller
          const postStream = this.get('controllers.topic.model.postStream');
          this.set('post', postStream.findLoadedPost(postId));
          this.set('buffer', selectedText);
          
          // create a marker element
          const markerElement = document.createElement("span");
          // containing a single invisible character
          markerElement.appendChild(document.createTextNode("\u{feff}"));
          
          // collapse the range at the beginning/end of the selection
          range.collapse(!Discourse.Mobile.isMobileDevice);
          // and insert it at the start of our selection range
          range.insertNode(markerElement);
          
          // retrieve the position of the marker
          const markerOffset = $(markerElement).offset(),
                $quoteButton = $('.quote-button');

dmitry_fedyuk · 30 يوليو 2015، 4:03م

I have quick fixed it for myself by replacing from "\u{feff}" to "".

eviltrout · 30 يوليو 2015، 7:20م

I tried on the latest Opera on OSX and could not reproduce the bug. However the error seems to be that it doesn’t understand the ES6 unicode format, which we should be transpiling. I added it as an option to babel:

https://github.com/discourse/discourse/commit/3c742918fe581f0752d1cfd3d0995923a908674b

Could you upgrade to our latest and try again? It should be transpiled properly now.

codinghorror · 31 يوليو 2015، 9:10م

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Document.createTextNode("\u{feff}") in quote-button.js.es6 breaks the latest Opera Browser

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