angular - Angular HttpClientModule 未定义

Question

我无法获取 HttpClientModule，加载此 ModuleType 时出现以下错误。我在 Angular 的 registerNgModuleType 方法中收到此错误。

function registerNgModuleType(ngModuleType) {
    if (ngModuleType.ɵmod.id !== null) {
        /** @type {?} */
        const id = ngModuleType.ɵmod.id;
        /** @type {?} */
        const existing = (/** @type {?} */ (modules.get(id)));
        assertSameOrNotExisting(id, existing, ngModuleType);
        modules.set(id, ngModuleType);
    }

“无法读取未定义的属性 'id'”。

这是我的 app.module.ts 文件 app.module.ts：

import { NgModule } from '@angular/core';

import { BrowserModule } from '@angular/platform-browser';
import { MatMenuModule } from '@angular/material/menu';
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
import {MatIconModule} from '@angular/material/icon';
import {MatButtonModule} from '@angular/material/button';
import { ReactiveFormsModule } from '@angular/forms';
import { HttpClientModule } from '@angular/common/http';

import { AppComponent } from './app.component';
import { StartComponent } from './start/start.component';
import { HeaderComponent } from './header/header.component';
import { SelectLanguageComponent } from './select-language/select-language.component';
import { PersonComponent } from './person/person.component';
import { DynamicFormQuestionComponent } from './question/question.component';
import { DynamicFormComponent } from './dynamic-form/dynamic-form.component';
import { AppRoutingModule } from './app-routing.module';


@NgModule({
  declarations: [
    AppComponent,
    StartComponent,
    HeaderComponent,
    SelectLanguageComponent,
    PersonComponent,
    DynamicFormQuestionComponent,
    DynamicFormComponent
  ],
  imports: [
    BrowserModule,
    HttpClientModule,
    MatMenuModule,
    BrowserAnimationsModule,
    MatIconModule,
    MatButtonModule, 
    ReactiveFormsModule,  
    AppRoutingModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

标签： angularangular-ngmodel

Answer 1

问题是该软件包缺少依赖项！