我们最近将 Angular 应用程序升级到了最新版本的 Angular(Angular v9)。我们所有的依赖项也都升级了,“ng update”表示我们所有的依赖项都是“有序的”。
当我们在启用 Ivy 的情况下构建应用程序时,编译过程会失败并出现大量错误,这是我们以前从未遇到过的:
"angularCompilerOptions": {
"enableIvy": true
}
有些错误很奇怪,说你不能绑定'ngClass'或'ngModel',因为它不是'div'的已知属性。它似乎缺少一些主要模块。
例如:
src/app/register/register.component.html:34:48 - error NG8002: Can't bind to 'ngClass' since it isn't a known property of 'div'.
<div class="form-group has-feedback" [ngClass]="{ 'has-error': f.submitted && !fname.valid }">
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/app/modals/modal-recommendations/modal-recommendations.component.html:12:25 - error NG8002: Can't bind to 'ngClass' since it isn't a known property of 'div'.
<div class="modal-body" [ngClass]="{'text-center': recommendationNotVisible()}">
12 <div class="modal-body" [ngClass]="{'text-center': recommendationNotVisible()}">
src/app/dashboard/dashboard.component.html:53:17 - error NG8002: Can't bind to 'accountId' since it isn't a known property of 'app-metric-box'.
53 [accountId]="accountId"
或者它无法识别某些组件,例如:
src/app/export/export-base/export-base.component.html:2:5 - error NG8001: 'router-outlet' is not a known element:
1. If 'router-outlet' is an Angular component, then verify that it is part of this module.
2. If 'router-outlet' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message.
2 <router-outlet></router-outlet>
错误主要有两种:
- 无法绑定到 [some-property],因为它不是 [some-element] 的已知属性。属性可以是角度属性(ngClass,ngModel)或我们组件上的自定义属性。
- [some-component] 不是已知元素(同样,我们的自定义组件和角度组件都会出现这种情况)
如果我们禁用“Ivy”,一切正常,代码编译并运行顺利。
我们想开始使用 Ivy,所以我们正在寻找关于这些错误的解释以及如何修复它们。
谢谢!