BundleTransformer:引导SASS

Question

我正在使用优秀的BundleTransformer Nuget包动态编译SCSS，使用ASP.NET捆绑和缩小管道。我正在尝试将bootstrap.sass包引入混合，并继续收到下面的错误。在这一点上，我的设置非常简单，scss文件使用node-sass工具编译得很好，如果删除@import "bootstrap/bootstrap.scss"行，SCSS将使用BundleTransformer进行完美的编译。有没有人遇到这个问题，可能有解决的办法？这是.NET框架4.7.2。谢谢!

BundleConfig.cs

        var nullBuilder = new NullBuilder();
        var styleTransformer = new StyleTransformer();
        var scriptTransformer = new ScriptTransformer();
        var nullOrderer = new NullOrderer();

        var defaultScssBundle = new CustomStyleBundle("~/bundles/styles/default");
        defaultScssBundle.Include(
            "~/Content/Default.scss"
        );
        defaultScssBundle.Builder = nullBuilder;
        defaultScssBundle.Transforms.Add(styleTransformer);
        defaultScssBundle.Transforms.Add(new CssMinify());
        defaultScssBundle.Orderer = nullOrderer;
        bundles.Add(defaultScssBundle);

Default.scss

@import "bootstrap/bootstrap.scss";

/* common styles */
.green {
    color: green;
}

.full-width {
    width: 100%;
}

误差

During translation of SCSS code, readed from the file '/TestProject/Content/bootstrap/_alert.scss', to CSS code syntax error has occurred.
See more details:

Error: Undefined variable: "$alert-padding-y".
       on line 7:12 of Content/bootstrap/_alert.scss
>>   padding: $alert-padding-y $alert-padding-x;
  -----------^

Error code: 1
Description: Undefined variable: "$alert-padding-y".
File: /TestProject/Content/bootstrap/_alert.scss
Line number: 7
Column number: 12
Source fragment:

Line 6:   position: relative;
Line 7:   padding: $alert-padding-y $alert-padding-x;
-------------------^
Line 8:   margin-bottom: $alert-margin-bottom;

Answer 1

经过多次反复试验，我发现了这个问题。在查看了在Github回购中的样本之后，我从BundleConfig.cs中提取了以下几行代码，现在一切都正常了。

defaultScssBundle.Builder = nullBuilder;
defaultScssBundle.Transforms.Add(styleTransformer);
defaultScssBundle.Transforms.Add(new CssMinify());