Javascript – Bundler not including .min files

asp.net-mvc-4bundling-and-minificationcjavascript

I have a weird issue with the mvc4 bundler not including files with extension .min.js

In my BundleConfig class, I declare

public static void RegisterBundles(BundleCollection bundles)
{
    bundles.Add(new ScriptBundle("~/Scripts/jquery")
        .Include("~/Scripts/jquery-1.8.0.js")
        .Include("~/Scripts/jquery.tmpl.min.js"));            
}

In my view, I declare

<html>
    <head>
    @Scripts.Render("~/Scripts/jquery")
    </head><body>test</body>
</html>

And when it renders, it only renders

<html>
    <head>
         <script src="/Scripts/jquery-1.8.0.js"></script>
    </head>
    <body>test</body>
</html>

If I rename the jquery.tmpl.min.js to jquery.tmpl.js (and update the path in the bundle accordingly), both scripts are rendered correctly.

Is there some config setting that is causing it to ignore '.min.js' files?

Best Answer

The solution I originally posted is questionable (is a dirty hack). The tweaked behaviour has changed in Microsoft.AspNet.Web.Optimization package and the tweak does not work anymore, as pointed out by many commenters. Right now I cannot reproduce the issue at all with the version 1.1.3 of the package.

Please see sources of System.Web.Optimization.BundleCollection (you can use dotPeek for example) for better understanding of what you are about to do. Also read Max Shmelev's answer.

Original answer:

Either rename .min.js to .js or do something like 

    public static void AddDefaultIgnorePatterns(IgnoreList ignoreList)
    {
        if (ignoreList == null)
            throw new ArgumentNullException("ignoreList");
        ignoreList.Ignore("*.intellisense.js");
        ignoreList.Ignore("*-vsdoc.js");
        ignoreList.Ignore("*.debug.js", OptimizationMode.WhenEnabled);
        //ignoreList.Ignore("*.min.js", OptimizationMode.WhenDisabled);
        ignoreList.Ignore("*.min.css", OptimizationMode.WhenDisabled);
    }

    public static void RegisterBundles(BundleCollection bundles)
    {
        bundles.IgnoreList.Clear();
        AddDefaultIgnorePatterns(bundles.IgnoreList);
        //NOTE: it's bundles.DirectoryFilter in Microsoft.AspNet.Web.Optimization.1.1.3 and not bundles.IgnoreList

        //...your code
     }
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