Repositorio del curso CCOM4030 el semestre B91 del proyecto Artesanías con el Instituto de Cultura

pairwise.js 1.7KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051
  1. "use strict";
  2. var __extends = (this && this.__extends) || (function () {
  3. var extendStatics = function (d, b) {
  4. extendStatics = Object.setPrototypeOf ||
  5. ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
  6. function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
  7. return extendStatics(d, b);
  8. }
  9. return function (d, b) {
  10. extendStatics(d, b);
  11. function __() { this.constructor = d; }
  12. d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
  13. };
  14. })();
  15. Object.defineProperty(exports, "__esModule", { value: true });
  16. var Subscriber_1 = require("../Subscriber");
  17. function pairwise() {
  18. return function (source) { return source.lift(new PairwiseOperator()); };
  19. }
  20. exports.pairwise = pairwise;
  21. var PairwiseOperator = (function () {
  22. function PairwiseOperator() {
  23. }
  24. PairwiseOperator.prototype.call = function (subscriber, source) {
  25. return source.subscribe(new PairwiseSubscriber(subscriber));
  26. };
  27. return PairwiseOperator;
  28. }());
  29. var PairwiseSubscriber = (function (_super) {
  30. __extends(PairwiseSubscriber, _super);
  31. function PairwiseSubscriber(destination) {
  32. var _this = _super.call(this, destination) || this;
  33. _this.hasPrev = false;
  34. return _this;
  35. }
  36. PairwiseSubscriber.prototype._next = function (value) {
  37. var pair;
  38. if (this.hasPrev) {
  39. pair = [this.prev, value];
  40. }
  41. else {
  42. this.hasPrev = true;
  43. }
  44. this.prev = value;
  45. if (pair) {
  46. this.destination.next(pair);
  47. }
  48. };
  49. return PairwiseSubscriber;
  50. }(Subscriber_1.Subscriber));
  51. //# sourceMappingURL=pairwise.js.map