import { Observable } from '../Observable';
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import { async as asyncScheduler } from '../scheduler/async';
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import { isScheduler } from '../util/isScheduler';
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import { isValidDate } from '../util/isDate';
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export function timer(dueTime = 0, intervalOrScheduler, scheduler = asyncScheduler) {
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let intervalDuration = -1;
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if (intervalOrScheduler != null) {
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if (isScheduler(intervalOrScheduler)) {
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scheduler = intervalOrScheduler;
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}
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else {
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intervalDuration = intervalOrScheduler;
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}
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}
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return new Observable((subscriber) => {
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let due = isValidDate(dueTime) ? +dueTime - scheduler.now() : dueTime;
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if (due < 0) {
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due = 0;
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}
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let n = 0;
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return scheduler.schedule(function () {
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if (!subscriber.closed) {
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subscriber.next(n++);
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if (0 <= intervalDuration) {
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this.schedule(undefined, intervalDuration);
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}
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else {
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subscriber.complete();
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}
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}
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}, due);
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});
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}
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//# sourceMappingURL=timer.js.map
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