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

   1 import { Subscriber } from '../Subscriber';
   2 import { ArgumentOutOfRangeError } from '../util/ArgumentOutOfRangeError';
   3 export function skipLast(count) {
   4     return (source) => source.lift(new SkipLastOperator(count));
   5 }
   6 class SkipLastOperator {
   7     constructor(_skipCount) {
   8         this._skipCount = _skipCount;
   9         if (this._skipCount < 0) {
  10             throw new ArgumentOutOfRangeError;
  11         }
  12     }
  13     call(subscriber, source) {
  14         if (this._skipCount === 0) {
  15             return source.subscribe(new Subscriber(subscriber));
  16         }
  17         else {
  18             return source.subscribe(new SkipLastSubscriber(subscriber, this._skipCount));
  19         }
  20     }
  21 }
  22 class SkipLastSubscriber extends Subscriber {
  23     constructor(destination, _skipCount) {
  24         super(destination);
  25         this._skipCount = _skipCount;
  26         this._count = 0;
  27         this._ring = new Array(_skipCount);
  28     }
  29     _next(value) {
  30         const skipCount = this._skipCount;
  31         const count = this._count++;
  32         if (count < skipCount) {
  33             this._ring[count] = value;
  34         }
  35         else {
  36             const currentIndex = count % skipCount;
  37             const ring = this._ring;
  38             const oldValue = ring[currentIndex];
  39             ring[currentIndex] = value;
  40             this.destination.next(oldValue);
  41         }
  42     }
  43 }
  44 //# sourceMappingURL=skipLast.js.map