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- 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
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