rxjs
Version:
Reactive Extensions for modern JavaScript
37 lines • 1.35 kB
JavaScript
import { EMPTY } from '../observable/empty';
import { operate } from '../util/lift';
import { OperatorSubscriber } from './OperatorSubscriber';
export function repeat(count) {
if (count === void 0) { count = Infinity; }
return count <= 0
? function () { return EMPTY; }
: operate(function (source, subscriber) {
var soFar = 0;
var innerSub;
var subscribeForRepeat = function () {
var syncUnsub = false;
innerSub = source.subscribe(new OperatorSubscriber(subscriber, undefined, function () {
if (++soFar < count) {
if (innerSub) {
innerSub.unsubscribe();
innerSub = null;
subscribeForRepeat();
}
else {
syncUnsub = true;
}
}
else {
subscriber.complete();
}
}));
if (syncUnsub) {
innerSub.unsubscribe();
innerSub = null;
subscribeForRepeat();
}
};
subscribeForRepeat();
});
}
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