node_modules/rxjs/dist/esm5/internal/operators/windowCount.js

import { __values } from "tslib";
import { Subject } from '../Subject';
import { operate } from '../util/lift';
import { createOperatorSubscriber } from './OperatorSubscriber';
export function windowCount(windowSize, startWindowEvery) {
    if (startWindowEvery === void 0) { startWindowEvery = 0; }
    var startEvery = startWindowEvery > 0 ? startWindowEvery : windowSize;
    return operate(function (source, subscriber) {
        var windows = [new Subject()];
        var starts = [];
        var count = 0;
        subscriber.next(windows[0].asObservable());
        source.subscribe(createOperatorSubscriber(subscriber, function (value) {
            var e_1, _a;
            try {
                for (var windows_1 = __values(windows), windows_1_1 = windows_1.next(); !windows_1_1.done; windows_1_1 = windows_1.next()) {
                    var window_1 = windows_1_1.value;
                    window_1.next(value);
                }
            }
            catch (e_1_1) { e_1 = { error: e_1_1 }; }
            finally {
                try {
                    if (windows_1_1 && !windows_1_1.done && (_a = windows_1.return)) _a.call(windows_1);
                }
                finally { if (e_1) throw e_1.error; }
            }
            var c = count - windowSize + 1;
            if (c >= 0 && c % startEvery === 0) {
                windows.shift().complete();
            }
            if (++count % startEvery === 0) {
                var window_2 = new Subject();
                windows.push(window_2);
                subscriber.next(window_2.asObservable());
            }
        }, function () {
            while (windows.length > 0) {
                windows.shift().complete();
            }
            subscriber.complete();
        }, function (err) {
            while (windows.length > 0) {
                windows.shift().error(err);
            }
            subscriber.error(err);
        }, function () {
            starts = null;
            windows = null;
        }));
    });
}
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