| import { Subscriber } from '../Subscriber'; | 
| export function filter(predicate, thisArg) { | 
|     return function filterOperatorFunction(source) { | 
|         return source.lift(new FilterOperator(predicate, thisArg)); | 
|     }; | 
| } | 
| class FilterOperator { | 
|     constructor(predicate, thisArg) { | 
|         this.predicate = predicate; | 
|         this.thisArg = thisArg; | 
|     } | 
|     call(subscriber, source) { | 
|         return source.subscribe(new FilterSubscriber(subscriber, this.predicate, this.thisArg)); | 
|     } | 
| } | 
| class FilterSubscriber extends Subscriber { | 
|     constructor(destination, predicate, thisArg) { | 
|         super(destination); | 
|         this.predicate = predicate; | 
|         this.thisArg = thisArg; | 
|         this.count = 0; | 
|     } | 
|     _next(value) { | 
|         let result; | 
|         try { | 
|             result = this.predicate.call(this.thisArg, value, this.count++); | 
|         } | 
|         catch (err) { | 
|             this.destination.error(err); | 
|             return; | 
|         } | 
|         if (result) { | 
|             this.destination.next(value); | 
|         } | 
|     } | 
| } | 
| //# sourceMappingURL=filter.js.map |