JSPM Angular2-rc2构建动画错误

因此，使用JSPM构建我的angular2项目以供发布：jspm bundle-sfx app dist/main.sfx.js。一切都好，直到我尝试在浏览器中加载构建的应用程序。这是错误我得到：`JSPM Angular2-rc2构建动画错误

EXCEPTION: Error during instantiation of AnimationDriver! (ViewUtils -> RootRenderer -> DomRootRenderer -> AnimationDriver 

ORIGINAL EXCEPTION: TypeError: Cannot read property 'animate' of null

全部日志如下：

The key "target-densitydpi" is not supported. 
EXCEPTION: Error during instantiation of AnimationDriver! (ViewUtils -> RootRenderer -> DomRootRenderer -> AnimationDriver). 
EXCEPTION: Error during instantiation of AnimationDriver! (ViewUtils -> RootRenderer -> DomRootRenderer -> AnimationDriver). 
ORIGINAL EXCEPTION: TypeError: Cannot read property 'animate' of null 
ORIGINAL STACKTRACE: 
TypeError: Cannot read property 'animate' of null 
    at BrowserDomAdapter.supportsWebAnimation (browser_adapter.js:507) 
    at _resolveDefaultAnimationDriver (browser.js:95) 
    at ReflectiveInjector_._instantiate (reflective_injector.js:468) 
    at ReflectiveInjector_._instantiateProvider (reflective_injector.js:410) 
    at ReflectiveInjector_._new (reflective_injector.js:399) 
    at ReflectiveInjectorDynamicStrategy.getObjByKeyId (reflective_injector.js:275) 
    at ReflectiveInjector_._getByKeyDefault (reflective_injector.js:571) 
    at ReflectiveInjector_._getByKey (reflective_injector.js:548) 
    at ReflectiveInjector_._getByReflectiveDependency (reflective_injector.js:539) 
    at ReflectiveInjector_._instantiate (reflective_injector.js:441) 
EXCEPTION: Error during instantiation of AnimationDriver! (ViewUtils -> RootRenderer -> DomRootRenderer -> AnimationDriver). 
EXCEPTION: Error during instantiation of AnimationDriver! (ViewUtils -> RootRenderer -> DomRootRenderer -> AnimationDriver). 
ORIGINAL EXCEPTION: TypeError: Cannot read property 'animate' of null 
ORIGINAL STACKTRACE: 
TypeError: Cannot read property 'animate' of null 
    at BrowserDomAdapter.supportsWebAnimation (browser_adapter.js:507) 
    at _resolveDefaultAnimationDriver (browser.js:95) 
    at ReflectiveInjector_._instantiate (reflective_injector.js:468) 
    at ReflectiveInjector_._instantiateProvider (reflective_injector.js:410) 
    at ReflectiveInjector_._new (reflective_injector.js:399) 
    at ReflectiveInjectorDynamicStrategy.getObjByKeyId (reflective_injector.js:275) 
    at ReflectiveInjector_._getByKeyDefault (reflective_injector.js:571) 
    at ReflectiveInjector_._getByKey (reflective_injector.js:548) 
    at ReflectiveInjector_._getByReflectiveDependency (reflective_injector.js:539) 
    at ReflectiveInjector_._instantiate (reflective_injector.js:441) 
InstantiationError {_wrapperMessage: "DI Exception", _originalException: TypeError: Cannot read property 'animate' of null 
    at BrowserDomAdapter.supportsWebAnimation (htt…, _originalStack: "TypeError: Cannot read property 'animate' of null↵… (https://randohinn.com/w2w/main.sfx.js:47702:34)", _context: null, _wrapperStack: "Error: DI Exception↵ at InstantiationError.Wrap… (https://randohinn.com/w2w/main.sfx.js:47702:34)"…}

什么会导致这样的错误？

来源

2016-06-21 Rando Hinn

我和webpack捆绑了angular2应用程序时发生了同样的错误。原来，在我的情况下，它抱怨document.body是null。当您在body部分之前的head中包含脚本并立即尝试使用document.body运行脚本时，会发生这种情况。

我的index.html是这样的：

<!DOCTYPE html> 
<html> 
<head> 
    <base href=""> 

    <title>Legal Review</title> 
    <meta charset="UTF-8"> 
    <meta name="viewport" content="width=device-width, initial-scale=1"> 
    <meta http-equiv="X-UA-Compatible" content="IE=edge"> 

    <script src="build/thirdparty.js"></script> 
    <script src="build/app.js"></script> 
</head> 

<body> 
    <app-component> 
     Loading... 
    </app-component> 
</body> 

</html>

所以，我感动的脚本是这样的：

<!DOCTYPE html> 
<html> 
<head> 
    <base href=""> 

    <title>Legal Review</title> 
    <meta charset="UTF-8"> 
    <meta name="viewport" content="width=device-width, initial-scale=1"> 
    <meta http-equiv="X-UA-Compatible" content="IE=edge"> 
</head> 

<body> 
    <app-component> 
     Loading... 
    </app-component> 

    <script src="build/thirdparty.js"></script> 
    <script src="build/app.js"></script> 
</body> 

</html>

而现在它工作正常。

来源

2016-06-21 13:20:07 megaboich

谢谢。这对我使用JSPM bundle-sfx很有用。那里的错误信息是相当神秘的，我基于我的脚本标签位置Angular2文档快速启动的例子... –

非常感谢，我不明白为什么这个错误看起来随机！ – Gnujeremie

JSPM Angular2-rc2构建动画错误

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