Javascript模块模式，Prototype和Google Closure [英] Javascript Module pattern, Prototype and Google Closure

问题描述

我无法通过Google Closure Compiler获得此代码结构以避免混淆。以下是一些示例代码：

I am having trouble getting this code structure to survive obfuscation with the Google Closure Compiler. Here's some sample code:

var MyModule = (function()
{   
    function myModule()
    {
        // Constructor
    }

    function moduleFoo(url)
    {
        // Method
    }

    function moduleBar()
    {
        // Method
    }

    myModule.prototype = {
        constructor: myModule,
        foo: moduleFoo,
        bar: moduleBar
    };

    return myModule;

})();

在我的代码中，我需要能够编写如下内容：

Elsewhere in my code I need be able to write things like the following:

var myMod = new MyModule();
myMod.foo();
myMod.bar();

然而，编译器正在重命名所有内容（如预期的那样）。如何在混淆后制作我在代码中其他地方定义的原型？我已尝试导出如下：

However the compiler is renaming everything (as expected). How can I make the prototype that I have defined available elsewhere in my code after obfuscation? I have tried exporting as follows:

// In place of the prototype object above
myModule.prototype['constructor'] = myModule;
myModule.prototype['foo'] = moduleFoo;
myModule.prototype['bar'] = moduleBar;

window['myModule'] = myModule;

但是当调用原型方法或执行相应的闭包时，事情似乎都会崩溃。

But things seem to break down either when the prototype methods are called or when their corresponding closures are executed.

感谢任何帮助。

推荐答案

这种确切的模式不会使用ADVANCED_OPTIMIZATIONS与Closure编译器配合良好。相反，您需要稍微重构您的代码：

This exact pattern does not work well with Closure-compiler using ADVANCED_OPTIMIZATIONS. Instead, you will need to slightly refactor your code:

/** @constructor */
function MyModule()
{
    // Constructor
}

(function() {
    function moduleFoo(url)
    {
        // Problem using "this" keyword. Will require @this annotation.
    }

    MyModule.prototype = {
        foo: moduleFoo
    };

    MyModule.prototype.bar =  function() {
        // "this" keyword works fine.
    };
})();

或者喜欢：

/** @const */
var MyNamespace = {};

(function() {
    /** @constructor */
    MyNamespace.MyModule = function() {};

    MyNamespace.MyModule.prototype = {
        constructor: function() {},
        foo: function(url) {},
        bar: function() {}
    };
})();

使用上述任何一种方法，您的出口都可以正常运作。

With either of the above methods your exports should work correctly.

注意：第二个选项仅适用于从最新源构建的编译器，因为它涉及上周刚刚修复的错误。

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