40 lines
1.4 KiB
JavaScript
40 lines
1.4 KiB
JavaScript
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import { Subject } from '../Subject';
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import { operate } from '../util/lift';
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import { createOperatorSubscriber } from './OperatorSubscriber';
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export function windowCount(windowSize, startWindowEvery = 0) {
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const startEvery = startWindowEvery > 0 ? startWindowEvery : windowSize;
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return operate((source, subscriber) => {
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let windows = [new Subject()];
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let starts = [];
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let count = 0;
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subscriber.next(windows[0].asObservable());
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source.subscribe(createOperatorSubscriber(subscriber, (value) => {
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for (const window of windows) {
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window.next(value);
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}
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const c = count - windowSize + 1;
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if (c >= 0 && c % startEvery === 0) {
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windows.shift().complete();
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}
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if (++count % startEvery === 0) {
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const window = new Subject();
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windows.push(window);
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subscriber.next(window.asObservable());
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}
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}, () => {
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while (windows.length > 0) {
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windows.shift().complete();
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}
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subscriber.complete();
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}, (err) => {
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while (windows.length > 0) {
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windows.shift().error(err);
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}
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subscriber.error(err);
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}, () => {
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starts = null;
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windows = null;
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}));
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});
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}
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//# sourceMappingURL=windowCount.js.map
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