Javascript 如何将app.module.ts中定义的ngModules用于延迟加载的组件？

我的目标是延迟加载应用程序我只想在

app.module.ts

例如，

user.component.ts

需要

FormsModule

和

HttpClientModule

。我想在

app.module.ts

中导入NgModules，而不是

components/user/user.module.ts

当前，如果

user.component.ts

需要

FormsModule

和

HttpClientModule

，我需要将其导入

user.module.ts

。理论上，我需要为每个使用

HttpClient.get（）的
视图导入
HttpClientModule
我担心这会增加延迟加载组件的捆绑大小

这是我想要实现的示例
app.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { HttpClientModule } from '@angular/common/http';

import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';

@NgModule({
  declarations: [
    AppComponent,
  ],
  imports: [
    BrowserModule,
    AppRoutingModule,
    FormsModule,
    HttpClientModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

=
tl:dr
下面是我使用的当前解决方案
使用user.module.ts
并为每个使用
HttpClient.get（）的视图导入
HttpClientModule

app.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';

import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';

@NgModule({
  declarations: [
    AppComponent,
  ],
  imports: [
    BrowserModule,
    AppRoutingModule,
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';

const routes: Routes = [
  {
    path: '',
    loadChildren: () => import('./components/user/user.module').then(m => m.UserModule)
  },
  {
    path: 'about/:id',
    loadChildren: () => import('./components/about/about.module').then(m => m.AboutModule),
  }
];

@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule]
})
export class AppRoutingModule { }

import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { HttpClientModule } from '@angular/common/http';

import { UserRoutingModule } from './user-routing.module';
import { UserComponent } from './user.component';

@NgModule({
  imports: [
    UserRoutingModule,
    FormsModule,
    HttpClientModule
  ],
  declarations: [UserComponent]
})
export class UserModule { }

app-routing.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';

import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';

@NgModule({
  declarations: [
    AppComponent,
  ],
  imports: [
    BrowserModule,
    AppRoutingModule,
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';

const routes: Routes = [
  {
    path: '',
    loadChildren: () => import('./components/user/user.module').then(m => m.UserModule)
  },
  {
    path: 'about/:id',
    loadChildren: () => import('./components/about/about.module').then(m => m.AboutModule),
  }
];

@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule]
})
export class AppRoutingModule { }

import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { HttpClientModule } from '@angular/common/http';

import { UserRoutingModule } from './user-routing.module';
import { UserComponent } from './user.component';

@NgModule({
  imports: [
    UserRoutingModule,
    FormsModule,
    HttpClientModule
  ],
  declarations: [UserComponent]
})
export class UserModule { }

组件/user/user.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';

import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';

@NgModule({
  declarations: [
    AppComponent,
  ],
  imports: [
    BrowserModule,
    AppRoutingModule,
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';

const routes: Routes = [
  {
    path: '',
    loadChildren: () => import('./components/user/user.module').then(m => m.UserModule)
  },
  {
    path: 'about/:id',
    loadChildren: () => import('./components/about/about.module').then(m => m.AboutModule),
  }
];

@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule]
})
export class AppRoutingModule { }

import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { HttpClientModule } from '@angular/common/http';

import { UserRoutingModule } from './user-routing.module';
import { UserComponent } from './user.component';

@NgModule({
  imports: [
    UserRoutingModule,
    FormsModule,
    HttpClientModule
  ],
  declarations: [UserComponent]
})
export class UserModule { }

您可以awlays构建应用程序用于生产，并检查捆绑包大小是否确实变大。您可以awlays构建应用程序用于生产，并检查捆绑包大小是否确实变大