32 lines
1.1 KiB
JavaScript
32 lines
1.1 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.skipLast = void 0;
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var identity_1 = require("../util/identity");
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var lift_1 = require("../util/lift");
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var OperatorSubscriber_1 = require("./OperatorSubscriber");
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function skipLast(skipCount) {
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return skipCount <= 0
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?
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identity_1.identity
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: lift_1.operate(function (source, subscriber) {
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var ring = new Array(skipCount);
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var seen = 0;
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source.subscribe(OperatorSubscriber_1.createOperatorSubscriber(subscriber, function (value) {
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var valueIndex = seen++;
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if (valueIndex < skipCount) {
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ring[valueIndex] = value;
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}
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else {
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var index = valueIndex % skipCount;
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var oldValue = ring[index];
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ring[index] = value;
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subscriber.next(oldValue);
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}
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}));
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return function () {
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ring = null;
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};
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});
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}
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exports.skipLast = skipLast;
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//# sourceMappingURL=skipLast.js.map
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