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name : distinct.js

 "use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.distinct = void 0;
var lift_1 = require("../util/lift");
var OperatorSubscriber_1 = require("./OperatorSubscriber");
var noop_1 = require("../util/noop");
var innerFrom_1 = require("../observable/innerFrom");
function distinct(keySelector, flushes) {
    return lift_1.operate(function (source, subscriber) {
        var distinctKeys = new Set();
        source.subscribe(OperatorSubscriber_1.createOperatorSubscriber(subscriber, function (value) {
            var key = keySelector ? keySelector(value) : value;
            if (!distinctKeys.has(key)) {
                distinctKeys.add(key);
                subscriber.next(value);
            }
        }));
        flushes && innerFrom_1.innerFrom(flushes).subscribe(OperatorSubscriber_1.createOperatorSubscriber(subscriber, function () { return distinctKeys.clear(); }, noop_1.noop));
    });
}
exports.distinct = distinct;
//# sourceMappingURL=distinct.js.map

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