在缩小javascript时，System.Web.Optimization会更改js文件的顺序

问题描述

在使用 System.Web.Optimization 缩小文件时，我观察到一种非常奇怪的行为，我已经在使用 IBundleOrderer 当我没有缩小文件时，它在保存文件顺序方面工作正常

I am observing a very peculiar behaviour when minifying files with System.Web.Optimization, I am already using IBundleOrderer that works fine in preserving file order when I am not minifying the files

public class RespectGivenBundleOrder : IBundleOrderer
{
    public IEnumerable<BundleFile> OrderFiles(BundleContext context, IEnumerable<BundleFile> files)
    {
        return files;
    }
}

public static void RegisterTestingBundle(BundleCollection bundles)
    {
        var bundle = new ScriptBundle("~/OnTheMoveWebFiles/bundles/Testing");
        bundle.Orderer = new RespectGivenBundleOrder();
        bundle.Include(
            string.Format("{0}jquery-{{version}}.js", baseJSFolder),
            string.Format("{0}ua-parser.js", baseJSFolder),
            string.Format("{0}OnTheMove_Core.js", baseJSFolder),
            string.Format("{0}OnTheMove_TheApplication.js", baseJSFolder),
            string.Format("{0}OnTheMove_JQMQueryString.js", baseJSFolder),
            string.Format("{0}OnTheMove_OfflineAuditing.js", baseJSFolder),
            string.Format("{0}OnTheMove_DatabaseManager.js", baseJSFolder),
            string.Format("{0}OnTheMove.js", baseJSFolder),
            string.Format("{0}OnTheMove_Offline.js", baseJSFolder),
            string.Format("{0}OnTheMove_DatabaseLoader.js", baseJSFolder),
            string.Format("{0}OnTheMove_DatabaseTestHelper.js", baseJSFolder),
            string.Format("{0}OnTheMove_SmartScriptPlayer.js", baseJSFolder),
            string.Format("{0}jasmine.js", baseJSFolder),
            string.Format("{0}jasmine-html.js", baseJSFolder),
            string.Format("{0}jasmine-jquery-{{version}}.js", baseJSFolder),
            string.Format("{0}jasmine-OnTheMove-GenericMocksAndHelpers.js", baseJSFolder),
            string.Format("{0}jasmine-OnTheMove-DatabaseManager-SiebelToSQL-Tests.js", baseJSFolder),
            string.Format("{0}jasmine-OnTheMove-TreeValidator-Tests.js", baseJSFolder),
            string.Format("{0}jasmine-OnTheMove-GlobalFunction-Tests.js", baseJSFolder),
            string.Format("{0}jasmine-OnTheMove-OnTheMove_BusinessComponent-Tests.js", baseJSFolder),
            string.Format("{0}jasmine-OnTheMove_DatabaseTestHelper-Tests.js", baseJSFolder),
            string.Format("{0}jasmine-OnTheMove_OfflineAuditing-Tests.js", baseJSFolder),
            string.Format("{0}jasmine-OnTheMove-JQueryExtension-Tests.js", baseJSFolder));
        bundles.Add(bundle);
    }

但当我确实开启了缩小时我会收到javascript错误并通过检查Chrome开发者工具中缩小文件的开头我可以立即看到订单搞砸了。

but when I do turn the minification on I am getting javascript errors and by inspecting the beginning of minified file in chrome developer tools I can immediately see that order is messed up.

当我执行 var cont = new BundleResolver（BundleTable.Bundles）.GetBundleContents（〜/ OnTheMoveWebFiles / bundles / Testing）时的立即窗口我得到

Count = 23
    [0]: "~/OnTheMoveWebFiles/js/jquery-1.7.1.js"
    [1]: "~/OnTheMoveWebFiles/js/ua-parser.js"
    [2]: "~/OnTheMoveWebFiles/js/OnTheMove_Core.js"
    [3]: "~/OnTheMoveWebFiles/js/OnTheMove_TheApplication.js"
    [4]: "~/OnTheMoveWebFiles/js/OnTheMove_JQMQueryString.js"
    [5]: "~/OnTheMoveWebFiles/js/OnTheMove_OfflineAuditing.js"
    [6]: "~/OnTheMoveWebFiles/js/OnTheMove_DatabaseManager.js"
    [7]: "~/OnTheMoveWebFiles/js/OnTheMove.js"
    [8]: "~/OnTheMoveWebFiles/js/OnTheMove_Offline.js"
    [9]: "~/OnTheMoveWebFiles/js/OnTheMove_DatabaseLoader.js"
    [10]: "~/OnTheMoveWebFiles/js/OnTheMove_DatabaseTestHelper.js"
    [11]: "~/OnTheMoveWebFiles/js/OnTheMove_SmartScriptPlayer.js"
    [12]: "~/OnTheMoveWebFiles/js/jasmine.js"
    [13]: "~/OnTheMoveWebFiles/js/jasmine-html.js"
    [14]: "~/OnTheMoveWebFiles/js/jasmine-jquery-1.7.0.js"
    [15]: "~/OnTheMoveWebFiles/js/jasmine-OnTheMove-GenericMocksAndHelpers.js"
    [16]: "~/OnTheMoveWebFiles/js/jasmine-OnTheMove-DatabaseManager-SiebelToSQL-Tests.js"
    [17]: "~/OnTheMoveWebFiles/js/jasmine-OnTheMove-TreeValidator-Tests.js"
    [18]: "~/OnTheMoveWebFiles/js/jasmine-OnTheMove-GlobalFunction-Tests.js"
    [19]: "~/OnTheMoveWebFiles/js/jasmine-OnTheMove-OnTheMove_BusinessComponent-Tests.js"
    [20]: "~/OnTheMoveWebFiles/js/jasmine-OnTheMove_DatabaseTestHelper-Tests.js"
    [21]: "~/OnTheMoveWebFiles/js/jasmine-OnTheMove_OfflineAuditing-Tests.js"
    [22]: "~/OnTheMoveWebFiles/js/jasmine-OnTheMove-JQueryExtension-Tests.js"

表示正在保留订单，但是当我在运行中缩小订单时（ var contents = BundleManager.GetBundleConte nts（〜/ OnTheMoveWebFiles / bundles / Testing）; ）我得到了

which shows that order is being preserved, however when I minify it on the fly (var contents =BundleManager.GetBundleContents("~/OnTheMoveWebFiles/bundles/Testing");) I get

"function TheApplication(){return window.onTheMove.theApplication}function decodeQueryString(n,t,i,r){var f,u={},s,h,e,o;if(i||(i=function(){return}),...

哪个是的开头OnTheMove_TheApplication.js 而不是 jquery-1.7.1.js 我期待的。我看到的一个解决方案是将它分成更多的捆绑并尝试以这种方式处理它。 为什么minifier不保留订单？我的期望是错的吗？

Which is beginning of OnTheMove_TheApplication.js and not jquery-1.7.1.js that I am expecting. One solution I see is to split it apart into more bundles and try to handle it that way. Why minifier is not preserving order? Is my expectation wrong?

推荐答案

我通过创建扩展来解决这个问题：

I managed solving this issue by creating an extension :

public class AsIsBundleOrderer : IBundleOrderer
{
    public virtual IEnumerable<FileInfo> OrderFiles(BundleContext context, IEnumerable<FileInfo> files)
    {
        return files;
    }
}

internal static class BundleExtensions
{
    public static Bundle ForceOrdered(this Bundle sb)
    {
        sb.Orderer = new AsIsBundleOrderer();
        return sb;
    }
}

然后，您可以注册您的包

Then, you can register your bundle

bundles.Add(new ScriptBundle("~/bundles/home")
            .Include("~/Scripts/leaflet-0.6.4.js")
            .Include("~/Scripts/oms.js")
            .Include("~/Scripts/home.js").ForceOrdered()

        );