It's now been a few times I am getting this error. Using **Sitecore 8.2 rev. 160729 along with SXA 1.2 rev. 161216**, when I modify a SXA javascript file (ie. a component-* file) inside the *Media Library > Wireframe > Themes > Scripts*, everything works fine but after a while I get in JS console: 

**"Uncaught SyntaxError: Unexpected token >"**

Inside the optimized javascript file that yields this error there indeed is a "<" missing at the first **link** tag after the jQuery code

[![enter image description here][1]][1]

This error is always yielded by a missing "<" at the end of the file I modified **no matter what I modified, even if I put back the original version or just change an unsignificant character inside a string**

As you can see, the portion of code that has the error corresponds to the source which does not miss the "<",

[![enter image description here][2]][2]

I get this error in sitecore logs in the middle of Indexes rebuild jobs,

    10116 15:10:27 ERROR Application error.
    Exception: System.NullReferenceException
    Message: La référence d'objet n'est pas définie à une instance d'un objet.
    Source: AjaxMin
       à Microsoft.Ajax.Utilities.JSParser.ParseUnaryExpression(Boolean& isLeftHandSideExpr, Boolean isMinus)
       à Microsoft.Ajax.Utilities.JSParser.ParseExpressionStatement(Boolean fSourceElement)
       à Microsoft.Ajax.Utilities.JSParser.ParseStatement(Boolean fSourceElement, Boolean skipImportantComment)
       à Microsoft.Ajax.Utilities.JSParser.ParseStatements(Block block)
       à Microsoft.Ajax.Utilities.JSParser.InternalParse()
       à Microsoft.Ajax.Utilities.Minifier.MinifyJavaScript(String source, CodeSettings codeSettings)
       à Sitecore.XA.Foundation.Theming.Bundler.AssetBundler.MinifyContent(MemoryStream memoryStream, StreamWriter writer, OptimizationType type)
       à Sitecore.XA.Foundation.Theming.Bundler.AssetBundler.PrepareContent(List`1 items, OptimizationType type, Boolean minify, StreamWriter writer, MemoryStream memoryStream)
       à Sitecore.XA.Foundation.Theming.Bundler.AssetBundler.CreateOptimizedItemForDirectory(Item directory, OptimizationType type, Boolean minify)
       à Sitecore.XA.Foundation.Theming.Pipelines.MediaRequestHandler.OptimizedFiles.ReGenerateOptimizedItem(String path, MediaRequest request)
       à Sitecore.XA.Foundation.Theming.Pipelines.MediaRequestHandler.OptimizedFiles.Process(MediaRequestHandlerArgs handlerArgs)
       à (Object , Object[] )
       à Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args)
       à Sitecore.Pipelines.DefaultCorePipelineManager.Run(String pipelineName, PipelineArgs args, Boolean failIfNotExists)
       à Sitecore.XA.Foundation.MediaRequestHandler.MediaRequestHandler.DoProcessRequest(HttpContext context)
       à Sitecore.Resources.Media.MediaRequestHandler.ProcessRequest(HttpContext context)
       à System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
       à System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

After a few times waiting, the error sometimes goes away but I would like to have a way to fix it rightaway without losing time.



  [1]: https://i.sstatic.net/XdXE4.png
  [2]: https://i.sstatic.net/ebJ6M.png