Angular 4.x-不支持函数调用。考虑引用一个导出函数替换函数或lambda

我试图通过使用静态forRoot（）提供一种定制服务的方法，但是

我得到以下错误-即使我已导出menuServiceFactory函数以用作工厂。
我还尝试将其导出为常量值

ERROR in Error: Error encountered resolving symbol values statically. Calling function 'MenuModule', function calls are not supported. Consider replacing the function or lambda with a reference to an exported function, resolving symbol AppModule in ...

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使用@yurzui help-这是重构模块-

import { NgModule, ModuleWithProviders, SkipSelf, Optional } from '@angular/core';
import { CommonModule } from '@angular/common';
import { MenuComponent } from './menu.component';
import { MenuService } from './menu.service';
import { MdMenuModule, MdToolbarModule, MdButtonModule } from '@angular/material';
import { FlexLayoutModule } from '@angular/flex-layout';
import { SecurityModule, SecurityService } from '@savantly/ngx-security';

@NgModule({
  imports: [
    CommonModule,
    MdMenuModule, MdToolbarModule, MdButtonModule, FlexLayoutModule, SecurityModule
  ],
  exports: [
    CommonModule,
    MdMenuModule, MdToolbarModule, MdButtonModule, FlexLayoutModule,
    SecurityModule,
    MenuComponent],
  declarations: [MenuComponent],
  providers: []
})
export class MenuModule {

  static forRoot({securityService = SecurityService}: {securityService?: SecurityService} = {}): ModuleWithProviders {
     return {
        ngModule: MenuModule,
        providers: [{
            provide: MenuService,
            useFactory: menuServiceFactory,
            deps: [securityService]
          }]
      };
  }

  constructor (@Optional() @SkipSelf() parentModule: MenuModule) {
    if (parentModule) {
      throw new Error(
        'MenuModule is already loaded. Import it in the AppModule only');
    }
  }
 }

export function menuServiceFactory(_securityService: SecurityService): MenuService {
  return new MenuService(_securityService);
}

---

使用@yurzui help-这是重构模块-

import { NgModule, ModuleWithProviders, SkipSelf, Optional } from '@angular/core';
import { CommonModule } from '@angular/common';
import { MenuComponent } from './menu.component';
import { MenuService } from './menu.service';
import { MdMenuModule, MdToolbarModule, MdButtonModule } from '@angular/material';
import { FlexLayoutModule } from '@angular/flex-layout';
import { SecurityModule, SecurityService } from '@savantly/ngx-security';

@NgModule({
  imports: [
    CommonModule,
    MdMenuModule, MdToolbarModule, MdButtonModule, FlexLayoutModule, SecurityModule
  ],
  exports: [
    CommonModule,
    MdMenuModule, MdToolbarModule, MdButtonModule, FlexLayoutModule,
    SecurityModule,
    MenuComponent],
  declarations: [MenuComponent],
  providers: []
})
export class MenuModule {

  static forRoot({securityService = SecurityService}: {securityService?: SecurityService} = {}): ModuleWithProviders {
     return {
        ngModule: MenuModule,
        providers: [{
            provide: MenuService,
            useFactory: menuServiceFactory,
            deps: [securityService]
          }]
      };
  }

  constructor (@Optional() @SkipSelf() parentModule: MenuModule) {
    if (parentModule) {
      throw new Error(
        'MenuModule is already loaded. Import it in the AppModule only');
    }
  }
 }

export function menuServiceFactory(_securityService: SecurityService): MenuService {
  return new MenuService(_securityService);
}

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尝试删除

if-else

语句谢谢@yurzui-它确实消除了静态分析错误。现在我需要弄清楚如何使这个有条件的…

{provide:someToken，useValue:options}，{provide:MenuService，useFactory:MenuService，deps:[someToken]}

这很有效，谢谢！尝试删除

if-else

语句谢谢@yurzui-它确实消除了静态分析错误。现在我需要弄清楚如何使这个有条件的…

{provide:someToken，useValue:options}，{provide:MenuService，useFactory:MenuService，deps:[someToken]}

这很有效，谢谢！嗨，你能给我解释一下forRoot参数吗？嗨，你能给我解释一下forRoot参数吗？