TypeError:无法读取未定义的属性"成员"

byg*_*ace 25 angular-cli angular

我今天开始从Angular 4.4.4升级到5.1.1.我不得不升级一些依赖于角度的其他软件包.我得到一个错误,上下文很少,我不知道从哪里开始.有没有其他人看过这个并知道问题是什么?

$ ng serve --aot=false
** NG Live Development Server is listening on localhost:4200, open your browser on http://localhost:4200/ **
Date: 2017-12-19T15:26:36.137Z
Hash: bf0b773d5dfafdd9133b
Time: 16934ms
chunk {inline} inline.bundle.js (inline) 5.79 kB [entry] [rendered]
chunk {main} main.bundle.js (main) 2.93 kB [initial] [rendered]
chunk {polyfills} polyfills.bundle.js (polyfills) 636 bytes [initial] [rendered]
chunk {scripts} scripts.bundle.js (scripts) 307 kB [initial] [rendered]
chunk {styles} styles.bundle.js (styles) 4.03 MB [initial] [rendered]
chunk {vendor} vendor.bundle.js (vendor) 855 kB [initial] [rendered]

ERROR in TypeError: Cannot read property 'members' of undefined
    at AotSummaryResolver.resolveSummary (C:\source\app\node_modules\@angular\compiler\bundles\compiler.umd.js:32638:56)
    at CompileMetadataResolver._loadSummary (C:\source\app\node_modules\@angular\compiler\bundles\compiler.umd.js:14825:66)
    at CompileMetadataResolver._getEntryComponentMetadata (C:\source\app\node_modules\@angular\compiler\bundles\compiler.umd.js:15857:66)
    at C:\source\app\node_modules\@angular\compiler\bundles\compiler.umd.js:15323:55
    at Array.map (<anonymous>)
    at CompileMetadataResolver.getNgModuleMetadata (C:\source\app\node_modules\@angular\compiler\bundles\compiler.umd.js:15323:18)
    at CompileMetadataResolver.getNgModuleSummary (C:\source\app\node_modules\@angular\compiler\bundles\compiler.umd.js:15157:52)
    at C:\source\app\node_modules\@angular\compiler\bundles\compiler.umd.js:15245:72
    at Array.forEach (<anonymous>)
    at CompileMetadataResolver.getNgModuleMetadata (C:\source\app\node_modules\@angular\compiler\bundles\compiler.umd.js:15230:49)
    at visitLazyRoute (C:\source\app\node_modules\@angular\compiler\bundles\compiler.umd.js:31061:104)
    at AotCompiler.listLazyRoutes (C:\source\app\node_modules\@angular\compiler\bundles\compiler.umd.js:31029:20)
    at AngularCompilerProgram.listLazyRoutes (C:\source\app\node_modules\@angular\compiler-cli\src\transformers\program.js:156:30)
    at Function.NgTools_InternalApi_NG_2.listLazyRoutes (C:\source\app\node_modules\@angular\compiler-cli\src\ngtools_api.js:44:36)
    at AngularCompilerPlugin._getLazyRoutesFromNgtools (C:\source\app\node_modules\@ngtools\webpack\src\angular_compiler_plugin.js:248:66)
    at Promise.resolve.then.then (C:\source\app\node_modules\@ngtools\webpack\src\angular_compiler_plugin.js:562:50)

webpack: Failed to compile.
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我觉得奇怪的是,AotSummaryResolver当我在serve命令中使用--aot = false时,它就开始了.

这是我的package.json:

{
  "name": "test",
  "version": "0.0.0",
  "license": "MIT",
  "scripts": {
    "ng": "ng",
    "start": "ng serve --aot=false",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@agm/core": "^1.0.0-beta.2",
    "@angular-devkit/schematics": "^0.0.42",
    "@angular/animations": "5.1.1",
    "@angular/cdk": "5.0.1",
    "@angular/common": "5.1.1",
    "@angular/compiler": "5.1.1",
    "@angular/core": "5.1.1",
    "@angular/forms": "5.1.1",
    "@angular/http": "5.1.1",
    "@angular/platform-browser": "5.1.1",
    "@angular/platform-browser-dynamic": "5.1.1",
    "@angular/platform-server": "5.1.1",
    "@angular/router": "5.1.1",
    "@auth0/angular-jwt": "^1.0.0-beta.9",
    "@ng-bootstrap/ng-bootstrap": "^1.0.0-beta.8",
    "@ng-idle/core": "^2.0.0-beta.13",
    "@ngrx/core": "^1.2.0",
    "@ngrx/effects": "^4.1.1",
    "@ngrx/entity": "^4.1.1",
    "@ngrx/store": "^4.1.1",
    "@ngrx/store-devtools": "^4.1.1",
    "@schematics/angular": "^0.1.11",
    "@schematics/schematics": "^0.0.11",
    "angular2-counto": "^1.2.3",
    "bootstrap": "4.0.0-beta.2",
    "core-js": "2.4.1",
    "d3": "^4.11.0",
    "echarts": "^3.6.0",
    "echarts-gl": "^1.0.0-alpha.5",
    "font-awesome": "^4.7.0",
    "global": "^4.3.2",
    "intl": "^1.2.5",
    "jquery": "^3.2.1",
    "moment": "^2.19.4",
    "ng2-dnd": "^5.0.2",
    "popper.js": "^1.11.0",
    "roboto-fontface": "^0.7.0",
    "rxjs": "^5.5.2",
    "toastr": "^2.1.2",
    "ts-action": "^3.2.2",
    "typings": "^2.1.1",
    "uuid": "^3.1.0",
    "web-animations-js": "^2.2.5",
    "yarn": "^0.24.5",
    "zone.js": "0.8.4"
  },
  "devDependencies": {
    "@angular/cli": "1.6.1",
    "@angular/compiler-cli": "5.1.1",
    "@types/d3": "^4.11.0",
    "@types/echarts": "^0.0.6",
    "@types/hammerjs": "^2.0.34",
    "@types/jasmine": "2.5.38",
    "@types/jquery": "^2.0.45",
    "@types/node": "^7.0.23",
    "@types/toastr": "^2.1.33",
    "@types/uuid": "^3.4.0",
    "codelyzer": "^4.0.2",
    "jasmine-core": "~2.5.2",
    "jasmine-spec-reporter": "~3.2.0",
    "json-server": "^0.12.0",
    "jsonwebtoken": "^7.4.1",
    "karma": "~1.4.1",
    "karma-chrome-launcher": "~2.1.1",
    "karma-cli": "~1.0.1",
    "karma-coverage-istanbul-reporter": "^0.2.0",
    "karma-jasmine": "~1.1.0",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.1.0",
    "ts-node": "~2.0.0",
    "tslint": "^5.8.0",
    "typemoq": "^1.7.0",
    "typescript": "2.4.2"
  }
}
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我的angular-cli版本是1.6.1.

错误似乎发生在角度源代码中:https: //github.com/angular/angular/blob/b3eb1db6dd57a0820cfc94af5460ceb3fea20610/packages/compiler/src/aot/summary_resolver.ts#L68

以前我认为它与ng-bootstrap有关,这是不正确的.

我通过将编辑器日志放在compiler.umd.js中的第15207行找到了一些上下文,如下所示:

if (meta.entryComponents) {
    console.log(meta);
    entryComponents.push.apply(entryComponents, flattenAndDedupeArray(meta.entryComponents)
                .map(function (type) { return /** @type {?} */ ((_this._getEntryComponentMetadata(type))); }));
}
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结果导致:

...
entryComponents: [ undefined ],
...
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我有一个模块,entryComponents: [MdProgressSpinner]其中MdProgressSpinner没有导入.当我删除它时,错误消失了......下一个来了:)

gre*_*pit 41

这可能发生的原因之一是你的应用程序模块,你有一个入口组件,构建过程无法找到导入(在下面的例子中,如果我注释掉导入行并离开组件,那么它会导致此错误) .在此输入图像描述

在此输入图像描述

  • 显然会发生这种情况的一个原因是传播算子。如果要使用在其他地方声明的数组中的入口组件,请使用concat。 (3认同)

For*_*For 7

我遇到了同样的问题,差点放弃。您的问题包含帮助我查明问题的技巧,但我完全错过了它,因为它是问题的一部分。

在console.umd.js中的第15258行放置控制台日志(或错误提示您指向的确切行):

if (meta.entryComponents) { console.log(meta); //<== Add this

我的控制台日志最后包含以下内容:{ngMetadataName:'NgModule',声明:[ null ],... entryComponents:[ null ]}

结果是一个模块导入了这样的类:

import MyComponent from "./my-component.component.ts";

该类使用default导出:

export default class MyComponent { ...

删除default,并在输入中添加大括号有效!

import { MyComponent } from "./my-component.component.ts";


Lau*_*uot 7

创建新时出现此错误消息。原来,在该库的public_api.ts中,我正在导入index.ts文件。这种类型的捆绑包仍然不能很好地处理。在我的情况下,对每个文件进行单独导入以公开公共API是解决方案。