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