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社区首页 >问答首页 >在最新的聚合物Dart发行版中使用高聚物JS的核心支架错误

问在最新的聚合物Dart发行版中使用高聚物JS的核心支架错误
EN

Stack Overflow用户
提问于 2014-06-03 14:37:54
回答 1查看 321关注 0票数 1

在听说聚合物JS组件应该能开箱即用之后，我继续尝试在我的项目中使用一些聚合物JS元素。

我需要从所有的JS组件中删除一些文件，比如demo.html、metadata.html和index.html，然后用。这是为了使聚合物变压器不会包括不必要的和不需要的文件，并确保它使用省道polymer.html文件，以防止它被载入两次。

我包含了核心-脚手架组件，并在最新的Dart编辑器中运行发布服务时得到了这个错误。

代码语言：javascript
复制
Build error:
Transform ScriptCompactor on gcanvas|web/index.html threw error: The null object does not have a method '>'.

NoSuchMethodError: method not found: '>'
Receiver: null
Arguments: [7]
dart:core-patch/object_patch.dart 45                                            Object.noSuchMethod
http://127.0.0.1:39312/packages/polymer_expressions/parser.dart 99:30           Parser._parseBinary
http://127.0.0.1:39312/packages/polymer_expressions/parser.dart 71:72           Parser._parsePrecedence
http://127.0.0.1:39312/packages/polymer_expressions/parser.dart 43:52           Parser._parseExpression
http://127.0.0.1:39312/packages/polymer_expressions/parser.dart 29:28           Parser.parse
http://127.0.0.1:39312/packages/polymer_expressions/parser.dart 12:56           parse
http://127.0.0.1:39312/packages/polymer/src/build/script_compactor.dart 524:25  _HtmlExtractor._addExpression
http://127.0.0.1:39312/packages/polymer/src/build/script_compactor.dart 509:23  _HtmlExtractor._processNormalElement.<fn>
dart:collection-patch/collection_patch.dart 957                                 _HashMap&&_LinkedHashMapMixin.forEach
http://127.0.0.1:39312/packages/polymer/src/build/script_compactor.dart 495:28  _HtmlExtractor._processNormalElement
http://127.0.0.1:39312/packages/polymer/src/build/script_compactor.dart 453:43  _HtmlExtractor.visitElement
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 12:50                 TreeVisitor.visit
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 24:49                 TreeVisitor.visitChildren
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 30:48                 TreeVisitor.visitNodeFallback
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 39:50                 TreeVisitor.visitElement
http://127.0.0.1:39312/packages/polymer/src/build/script_compactor.dart 465:25  _HtmlExtractor.visitElement
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 12:50                 TreeVisitor.visit
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 24:49                 TreeVisitor.visitChildren
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 30:48                 TreeVisitor.visitNodeFallback
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 39:50                 TreeVisitor.visitElement
http://127.0.0.1:39312/packages/polymer/src/build/script_compactor.dart 465:25  _HtmlExtractor.visitElement
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 12:50                 TreeVisitor.visit
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 24:49                 TreeVisitor.visitChildren
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 30:48                 TreeVisitor.visitNodeFallback
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 39:50                 TreeVisitor.visitElement
http://127.0.0.1:39312/packages/polymer/src/build/script_compactor.dart 462:25  _HtmlExtractor.visitElement
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 12:50                 TreeVisitor.visit
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 24:49                 TreeVisitor.visitChildren
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 30:48                 TreeVisitor.visitNodeFallback
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 39:50                 TreeVisitor.visitElement
http://127.0.0.1:39312/packages/polymer/src/build/script_compactor.dart 465:25  _HtmlExtractor.visitElement
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 12:50                 TreeVisitor.visit
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 24:49                 TreeVisitor.visitChildren
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 30:48                 TreeVisitor.visitNodeFallback
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 39:50                 TreeVisitor.visitElement
http://127.0.0.1:39312/packages/polymer/src/build/script_compactor.dart 465:25  _HtmlExtractor.visitElement
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 12:50                 TreeVisitor.visit
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 24:49                 TreeVisitor.visitChildren
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 30:48                 TreeVisitor.visitNodeFallback
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 39:50                 TreeVisitor.visitElement
http://127.0.0.1:39312/packages/polymer/src/build/script_compactor.dart 465:25  _HtmlExtractor.visitElement
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 12:50                 TreeVisitor.visit
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 24:49                 TreeVisitor.visitChildren
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 30:48                 TreeVisitor.visitNodeFallback
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 32:52                 TreeVisitor.visitDocument
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 16:52                 TreeVisitor.visit
http://127.0.0.1:39312/packages/polymer/src/build/script_compactor.dart 187:61  _extractUsesOfMirrors
dart:async/zone.dart 730                                                        _rootRunUnary
dart:async/zone.dart 864                                                        _RootZone.runUnary
dart:async/future_impl.dart 488                                                 _Future._propagateToListeners.handleValueCallback
dart:async/future_impl.dart 571                                                 _Future._propagateToListeners
dart:async/future_impl.dart 555                                                 _Future._propagateToListeners.handleWhenCompleteCallback.<fn>
dart:async/zone.dart 730                                                        _rootRunUnary
dart:async/zone.dart 864                                                        _RootZone.runUnary
dart:async/future_impl.dart 488                                                 _Future._propagateToListeners.handleValueCallback
dart:async/future_impl.dart 571                                                 _Future._propagateToListeners
dart:async/future_impl.dart 331                                                 _Future._completeWithValue
dart:async/future_impl.dart 393                                                 _Future._asyncComplete.<fn>
dart:async/schedule_microtask.dart 23                                           _asyncRunCallbackLoop
dart:async/schedule_microtask.dart 32                                           _asyncRunCallback
dart:isolate-patch/isolate_patch.dart 128                                       _RawReceivePortImpl._handleMessage

dart:core                                                                       Object.noSuchMethod
http://127.0.0.1:39312/packages/polymer_expressions/parser.dart 99:30           Parser._parseBinary
http://127.0.0.1:39312/packages/polymer_expressions/parser.dart 71:72           Parser._parsePrecedence
http://127.0.0.1:39312/packages/polymer_expressions/parser.dart 43:52           Parser._parseExpression
http://127.0.0.1:39312/packages/polymer_expressions/parser.dart 29:28           Parser.parse
http://127.0.0.1:39312/packages/polymer_expressions/parser.dart 12:56           parse
http://127.0.0.1:39312/packages/polymer/src/build/script_compactor.dart 524:25  _HtmlExtractor._addExpression
http://127.0.0.1:39312/packages/polymer/src/build/script_compactor.dart 509:23  _HtmlExtractor._processNormalElement.<fn>
dart:collection                                                                 _HashMap&&_LinkedHashMapMixin.forEach
http://127.0.0.1:39312/packages/polymer/src/build/script_compactor.dart 495:28  _HtmlExtractor._processNormalElement
http://127.0.0.1:39312/packages/polymer/src/build/script_compactor.dart 453:43  _HtmlExtractor.visitElement
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 12:50                 TreeVisitor.visit
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 24:49                 TreeVisitor.visitChildren
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 30:48                 TreeVisitor.visitNodeFallback
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 39:50                 TreeVisitor.visitElement
http://127.0.0.1:39312/packages/polymer/src/build/script_compactor.dart 465:25  _HtmlExtractor.visitElement
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 12:50                 TreeVisitor.visit
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 24:49                 TreeVisitor.visitChildren
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 30:48                 TreeVisitor.visitNodeFallback
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 39:50                 TreeVisitor.visitElement
http://127.0.0.1:39312/packages/polymer/src/build/script_compactor.dart 465:25  _HtmlExtractor.visitElement
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 12:50                 TreeVisitor.visit
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 24:49                 TreeVisitor.visitChildren
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 30:48                 TreeVisitor.visitNodeFallback
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 39:50                 TreeVisitor.visitElement
http://127.0.0.1:39312/packages/polymer/src/build/script_compactor.dart 462:25  _HtmlExtractor.visitElement
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 12:50                 TreeVisitor.visit
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 24:49                 TreeVisitor.visitChildren
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 30:48                 TreeVisitor.visitNodeFallback
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 39:50                 TreeVisitor.visitElement
http://127.0.0.1:39312/packages/polymer/src/build/script_compactor.dart 465:25  _HtmlExtractor.visitElement
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 12:50                 TreeVisitor.visit
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 24:49                 TreeVisitor.visitChildren
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 30:48                 TreeVisitor.visitNodeFallback
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 39:50                 TreeVisitor.visitElement
http://127.0.0.1:39312/packages/polymer/src/build/script_compactor.dart 465:25  _HtmlExtractor.visitElement
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 12:50                 TreeVisitor.visit
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 24:49                 TreeVisitor.visitChildren
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 30:48                 TreeVisitor.visitNodeFallback
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 39:50                 TreeVisitor.visitElement
http://127.0.0.1:39312/packages/polymer/src/build/script_compactor.dart 465:25  _HtmlExtractor.visitElement
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 12:50                 TreeVisitor.visit
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 24:49                 TreeVisitor.visitChildren
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 30:48                 TreeVisitor.visitNodeFallback
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 32:52                 TreeVisitor.visitDocument
http://127.0.0.1:39312/packages/html5lib/dom_parsing.dart 16:52                 TreeVisitor.visit
http://127.0.0.1:39312/packages/polymer/src/build/script_compactor.dart 187:61  _extractUsesOfMirrors
dart:isolate                                                                    _RawReceivePortImpl._handleMessage
Build completed with 1 errors.
[web] GET /index.html => Could not find asset gcanvas|web/index.html.
[web] GET /favicon.ico => Could not find asset gcanvas|web/favicon.ico.

我跟踪它到组件核心标题面板，通过排除，然后一个一个地包括在核心支架中找到的组件，直到它再次失败。

有人知道这种方法在哪里吗？什么是空？除非我想放弃使用核心支架，否则这是个阻滞剂。无论如何，下面粘贴的是bower.json文件和pubspec.yaml的内容，以防有帮助。

pubspec.yaml

代码语言：javascript
复制
name: gcanvas
version: 0.0.5
author: James Hurford
description: Canvasing App for doorknocking campaigns.
environment:
  sdk: '>=1.0.0 <2.0.0'
dependencies:
  browser_detect: any
  csvparser: any
  http: any
  http_server: any
  lawndart: any
  mime: any
  polymer: any
  postgresql: any
  route: any
  uuid: any
dev_dependencies:
  scheduled_test: any
transformers:
- polymer:
    entry_points:
    - web/index.html

bower.json

代码语言：javascript
复制
{
  "name": "gcanvas",
  "version": "0.0.0",
  "authors": [
    "James Hurford"
  ],
  "private": true,
  "ignore": [
    "**/.*",
    "node_modules",
    "bower_components",
    "test",
    "tests"
  ],
  "dependencies": {
    "x-tag-imports": "x-tag/x-tag-imports",
    "polymer-ui-tabs": "polymer/polymer-ui-tabs#~0.3.0",
    "core-scaffold": "polymer/core-scaffold#~0.3.1"
  },
  "resolutions": {
    "platform": ">=0.3.0 <1.0.0"
  }
}

谢谢

javascript
dart
polymer
dart-polymer
EN

回答 1

Stack Overflow用户

回答已采纳

发布于 2014-06-04 06:18:02

从抛出异常的代码来看，Polmyer转换器似乎试图处理HTML文件和绑定表达式。这看起来像是polymer_expressions中的缺陷或缺失的特性，可能是Dart聚合物变压器。我怀疑这个代码在聚合物头面板<div id="mainContainer" flex?="{{mode !== 'cover'}}" on-scroll="{{scroll}}"> is causing the exception at the unknown operator !==中。

票数 2
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/24018020

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