如何在ngrx/effects中做if/else？

import { Injectable } from '@angular/core';
import { Actions, createEffect, ofType } from '@ngrx/effects';
import { map, mergeMap } from 'rxjs/operators';
import { of } from 'rxjs';

@Injectable()
export class YourEffectClass {
  constructor(private actions$: Actions) {}
  
  yourEffect$ = createEffect(() =>
    this.actions$.pipe(
      ofType('YOUR_ACTION_TYPE'),
      mergeMap((action) => {
        if (action.condition) {
          // 处理条件为true的情况
          return of({ type: 'ACTION_TYPE_IF_TRUE', payload: action.payload });
        } else {
          // 处理条件为false的情况
          return of({ type: 'ACTION_TYPE_IF_FALSE', payload: action.payload });
        }
      })
    )
  );
}

import { EffectsModule } from '@ngrx/effects';

@NgModule({
  imports: [
    EffectsModule.forRoot([YourEffectClass]),
    // 其他模块导入
  ],
  // 其他配置
})
export class YourModule { }