使用某些纸张/核心元素时在dartium中的警告 [英] Warnings in dartium when using some paper/core elements

问题描述

我试图使用纸标签，纸标签和核心页面元素，但dartium显示一堆警告，如：

I'm trying to use paper-tabs, paper-tab and core-pages elements but dartium shows a bunch of warnings like:

(from html5lib) Unexpected non-space characters. Expected DOCTYPE. 
package:paper_elements/paper_tabs.dart:1:1

(from html5lib) Unexpected character after attribute value. 
package:paper_elements/paper_tabs.dart:38:9

>

And then:

custom element with name "paper-tabs" not found. 

您可能猜到这些元素不起作用。其他元素像核心覆盖，核心，纸按钮似乎工作正常。我使用dart 1.9.0-dev.3.0，core_elements 0.6.0 + 5，paper_elements 0.6.1和聚合物0.15.5 + 4。

As you may guess these elements doesn't work. Other elements like core-overlay, core-field, paper-button seems to work fine. I'm using dart 1.9.0-dev.3.0, core_elements 0.6.0+5, paper_elements 0.6.1 and polymer 0.15.5+4. What may be the cause of such behaviour?

推荐答案

这是由于某些html导入指向dart文件而不是html文件导致的of foo_element.html（此处的代码）。将这些导入交换为指向html文件将删除所有警告。

This is caused by some html imports pointing to dart files instead of html files inside of foo_element.html (code here). Swapping those imports to point to html files removes all warnings.

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