29 lines
586 B
TypeScript
29 lines
586 B
TypeScript
import { NgModule, Optional, SkipSelf } from '@angular/core';
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import { CommonModule } from '@angular/common';
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import { ContactService } from './contact.service';
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@NgModule({
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declarations: [],
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imports: [
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CommonModule
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]
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})
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export class ContactModule {
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constructor(
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@Optional()
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@SkipSelf()
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parentModule: ContactModule
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) {
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if (parentModule) {
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throw new Error('ContactModule is already loaded. Import it in the AppModule only');
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}
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}
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static forRoot() {
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return {
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ngModule: ContactModule,
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providers: [ ContactService ]
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}
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}
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}
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