Why Does ASP.NET MVC Bundler Exclude My .min.js Files, and How Can I Fix It?

Troubleshooting ASP.NET MVC Bundling: Why .min.js Files Are Sometimes Omitted

ASP.NET MVC's bundling feature sometimes unexpectedly omits .min.js files, even when correctly specified in BundleConfig. While simply renaming .min.js files to .js might seem like a quick fix, it's not ideal. A more effective solution involves adjusting the bundler's ignore list.

The problem stems from the bundler's default behavior. To rectify this, modify your BundleConfig class as follows:

<code class="language-csharp">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);  //Comment this line out
    ignoreList.Ignore("*.min.css", OptimizationMode.WhenDisabled);
}

public static void RegisterBundles(BundleCollection bundles)
{
    bundles.IgnoreList.Clear();
    AddDefaultIgnorePatterns(bundles.IgnoreList);
    //...rest of your bundle registration code
}</code>

By commenting out ignoreList.Ignore("*.min.js", OptimizationMode.WhenDisabled);, you prevent the bundler from ignoring .min.js files when optimization is turned off. This ensures that your minimized JavaScript files are always included in the bundle, regardless of the optimization setting.

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