Feature Gating - check the gates

feature-gating-service.ts

interface IFeatureService{
   isEnabled(featureName:string):boolean;
}

export class Foo implements IFoo{
   constructor(private readonly featureService:IFeatureService){}

   public bar(){
       if(this.featureService.isEnabled("feature-x")){
           /*.......*/
       }else{
           /*.......*/
       }
   }
};