48 lines
1.9 KiB
JavaScript
48 lines
1.9 KiB
JavaScript
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"use strict";
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var __values = (this && this.__values) || function(o) {
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var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0;
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if (m) return m.call(o);
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if (o && typeof o.length === "number") return {
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next: function () {
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if (o && i >= o.length) o = void 0;
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return { value: o && o[i++], done: !o };
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}
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};
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throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.takeLast = void 0;
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var empty_1 = require("../observable/empty");
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var lift_1 = require("../util/lift");
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var OperatorSubscriber_1 = require("./OperatorSubscriber");
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function takeLast(count) {
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return count <= 0
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? function () { return empty_1.EMPTY; }
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: lift_1.operate(function (source, subscriber) {
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var buffer = [];
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source.subscribe(OperatorSubscriber_1.createOperatorSubscriber(subscriber, function (value) {
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buffer.push(value);
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count < buffer.length && buffer.shift();
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}, function () {
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var e_1, _a;
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try {
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for (var buffer_1 = __values(buffer), buffer_1_1 = buffer_1.next(); !buffer_1_1.done; buffer_1_1 = buffer_1.next()) {
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var value = buffer_1_1.value;
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subscriber.next(value);
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}
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}
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catch (e_1_1) { e_1 = { error: e_1_1 }; }
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finally {
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try {
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if (buffer_1_1 && !buffer_1_1.done && (_a = buffer_1.return)) _a.call(buffer_1);
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}
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finally { if (e_1) throw e_1.error; }
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}
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subscriber.complete();
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}, undefined, function () {
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buffer = null;
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}));
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});
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}
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exports.takeLast = takeLast;
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//# sourceMappingURL=takeLast.js.map
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