37 lines
1.1 KiB
JavaScript
37 lines
1.1 KiB
JavaScript
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import { Observable } from '../Observable';
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import { async } from '../scheduler/async';
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import { isNumeric } from '../util/isNumeric';
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import { isScheduler } from '../util/isScheduler';
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export function timer(dueTime = 0, periodOrScheduler, scheduler) {
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let period = -1;
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if (isNumeric(periodOrScheduler)) {
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period = Number(periodOrScheduler) < 1 && 1 || Number(periodOrScheduler);
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}
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else if (isScheduler(periodOrScheduler)) {
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scheduler = periodOrScheduler;
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}
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if (!isScheduler(scheduler)) {
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scheduler = async;
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}
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return new Observable(subscriber => {
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const due = isNumeric(dueTime)
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? dueTime
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: (+dueTime - scheduler.now());
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return scheduler.schedule(dispatch, due, {
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index: 0, period, subscriber
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});
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});
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}
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function dispatch(state) {
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const { index, period, subscriber } = state;
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subscriber.next(index);
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if (subscriber.closed) {
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return;
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}
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else if (period === -1) {
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return subscriber.complete();
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}
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state.index = index + 1;
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this.schedule(state, period);
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}
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//# sourceMappingURL=timer.js.map
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