.config/coc/extensions/node_modules/coc-prettier/node_modules/rxjs/_esm2015/internal/operators/take.js

   1 import { Subscriber } from '../Subscriber';
   2 import { ArgumentOutOfRangeError } from '../util/ArgumentOutOfRangeError';
   3 import { empty } from '../observable/empty';
   4 export function take(count) {
   5     return (source) => {
   6         if (count === 0) {
   7             return empty();
   8         }
   9         else {
  10             return source.lift(new TakeOperator(count));
  11         }
  12     };
  13 }
  14 class TakeOperator {
  15     constructor(total) {
  16         this.total = total;
  17         if (this.total < 0) {
  18             throw new ArgumentOutOfRangeError;
  19         }
  20     }
  21     call(subscriber, source) {
  22         return source.subscribe(new TakeSubscriber(subscriber, this.total));
  23     }
  24 }
  25 class TakeSubscriber extends Subscriber {
  26     constructor(destination, total) {
  27         super(destination);
  28         this.total = total;
  29         this.count = 0;
  30     }
  31     _next(value) {
  32         const total = this.total;
  33         const count = ++this.count;
  34         if (count <= total) {
  35             this.destination.next(value);
  36             if (count === total) {
  37                 this.destination.complete();
  38                 this.unsubscribe();
  39             }
  40         }
  41     }
  42 }
  43 //# sourceMappingURL=take.js.map