聚合物+ Dart2js不工作

本文介绍了聚合物+ Dart2js不工作的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

当我使用Polymer库创建一个新的应用程序时，它会生成一个示例项目。该项目在Dartium中工作正常，但是当我编译它（使用 pub build ），它不工作了。

When I create a new application using the Polymer library, it generates a sample project. The project works just fine in Dartium, but when I compile it (using pub build), it doesn't work anymore.

我得到两个404和一个未捕获的类型错误。

I get two 404's and an uncaught typeerror.

这是我的控制台输出在Chrome。

Here is my console output in Chrome.

GET file:///home/michael/Code/sample/build/web/packages/shadow_dom/shadow_dom.debug.js sample.html:1 GET file:///home/michael/Code/sample/build/web/packages/custom_element/custom-elements.debug.js sample.html:2 Uncaught TypeError: Object #<HTMLDocument> has no method 'registerElement' sample.html_bootstrap.dart.js:6681 wi sample.html_bootstrap.dart.js:6681 ei sample.html_bootstrap.dart.js:9102 Ok sample.html_bootstrap.dart.js:9099 QL sample.html_bootstrap.dart.js:2184 aX.vV sample.html_bootstrap.dart.js:759 Vg sample.html_bootstrap.dart.js:644 (anonymous function) sample.html_bootstrap.dart.js:12464 init.currentScript sample.html_bootstrap.dart.js:12444 (anonymous function) sample.html_bootstrap.dart.js:12458 (anonymous function) sample.html_bootstrap.dart.js:12585

在 build / web / packages / ，所以我不知道为什么我得到一个404。

These files exist in build/web/packages/, so I'm not sure why I'm getting a 404.

这工作正常，我更新到最新的Dart SDK（开发渠道）。

This worked fine before I updated to the latest Dart SDK (dev channel). Is it just a bug in there, what might be going on?

感谢。

更新：

我看到一个 Dart问题，我遇到了另一个问题，因此我应用了他们的 fix 到示例项目，现在我只得到 Uncaught TypeError 。现在我的输出如下所示：

I saw a Dart issue that I was having another issue with, so I applied their fix to the sample project, and now I only get the Uncaught TypeError. Now my output looks like this:

Uncaught TypeError: Object #<HTMLDocument> has no method 'registerElement' sample.html_bootstrap.dart.js:6518 wi sample.html_bootstrap.dart.js:6518 ei sample.html_bootstrap.dart.js:8949 Ok sample.html_bootstrap.dart.js:8946 QL sample.html_bootstrap.dart.js:2142 aX.vV sample.html_bootstrap.dart.js:725 Vg sample.html_bootstrap.dart.js:587 (anonymous function) sample.html_bootstrap.dart.js:12313 init.currentScript sample.html_bootstrap.dart.js:12293 (anonymous function) sample.html_bootstrap.dart.js:12307 (anonymous function) sample.html_bootstrap.dart.js:12434

推荐答案

我通过在聚合物上放置依赖项约束来工作。我的pubspec.yaml文件现在看起来像这样：

I got it to work by placing a dependency constraint on polymer. My pubspec.yaml file now looks like this:

name: sample description: A sample Polymer application dependencies: browser: any polymer: "0.9.5" transformers: - polymer: entry_points: web/sample.html