Unexpected value 'DecoratorFactory' imported by the module 'TempModule'

Another way you can see this error is by importing a module from the wrong place. For example:

import {CommonModule} from '@angular/core';  // wrong

should be:

import {CommonModule} from '@angular/common';

You're trying to import decorator in imports array. It should contain only modules

@NgModule({
  declarations: [ TempOneComponent,
                TempTwoComponent],
  imports: [ NgModule, <== why is it here???
           CommonModule,
           tempRouting]
}) 
export class TempModule {}