Angular库构建错误:TypeError:无法读取属性’type’的null
发布时间:2020-12-17 17:11:28 所属栏目:安全 来源:网络整理
导读:在Angular v6中,当我尝试构建我的库时,我遇到了一个非常不具描述性的BUILD ERROR无法读取null的属性’type’ BUILD ERRORCannot read property 'type' of nullTypeError: Cannot read property 'type' of null at /Users/John/apps/tests/service-work/node_
在Angular v6中,当我尝试构建我的库时,我遇到了一个非常不具描述性的BUILD ERROR无法读取null的属性’type’
BUILD ERROR Cannot read property 'type' of null TypeError: Cannot read property 'type' of null at /Users/John/apps/tests/service-work/node_modules/@angular/compiler/bundles/compiler.umd.js:15378:27 at Array.forEach (<anonymous>) at removeSummaryDuplicates (/Users/John/apps/tests/service-work/node_modules/@angular/compiler/bundles/compiler.umd.js:15377:11) at TemplateParser.tryParseHtml (/Users/John/apps/tests/service-work/node_modules/@angular/compiler/bundles/compiler.umd.js:14806:34) at TemplateParser.tryParse (/Users/John/apps/tests/service-work/node_modules/@angular/compiler/bundles/compiler.umd.js:14799:21) at TemplateParser.parse (/Users/John/apps/tests/service-work/node_modules/@angular/compiler/bundles/compiler.umd.js:14780:27) at AotCompiler._parseTemplate (/Users/John/apps/tests/service-work/node_modules/@angular/compiler/bundles/compiler.umd.js:20483:43) at AotCompiler._createTypeCheckBlock (/Users/John/apps/tests/service-work/node_modules/@angular/compiler/bundles/compiler.umd.js:20250:23) at /Users/John/apps/tests/service-work/node_modules/@angular/compiler/bundles/compiler.umd.js:20220:27 at Array.forEach (<anonymous>) 已经解决了这个问题,我正在发布这篇文章,以帮助其他人遇到这个问题. 解决方法
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似乎我对这个问题的诊断是不正确的(现在已经很久了,我记不清楚我是如何修复的). Check out this issue in the Angular repo听起来像是正确的诊断, 原始答案: 所以在经过大量的调试之后,我发现了它: 我的自定义库,我们称之为库A,将另一个自定义库库B导入库A的NgModule.库B从它的主要NgModule中导出了几个组件和模块.问题是,当库B从它的NgModule导出组件和模块时,我也无法通过javascript / typescript导出这些组件和模块.解决方案是确保通过我在NgModule中导出的typescript导出任何组件/模块. 示例问题代码 import { NgModule } from '@angular/core'; import { CommonModule } from '@angular/common'; import { LibraryBComponent } from './library-b.component'; @NgModule({ imports: [CommonModule],declarations: [LibraryBComponent],exports: [LibraryBComponent],}) export class LibraryBModule {} 解决方案代码 import { NgModule } from '@angular/core'; import { CommonModule } from '@angular/common'; import { LibraryBComponent } from './library-b.component'; export { LibraryBComponent } // <-- addition @NgModule({ imports: [CommonModule],}) export class LibraryBModule {} (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |