--- /dev/null
+/** PURE_IMPORTS_START _Observable,_scheduler_async,_util_isNumeric PURE_IMPORTS_END */
+import { Observable } from '../Observable';
+import { async } from '../scheduler/async';
+import { isNumeric } from '../util/isNumeric';
+export function interval(period, scheduler) {
+ if (period === void 0) {
+ period = 0;
+ }
+ if (scheduler === void 0) {
+ scheduler = async;
+ }
+ if (!isNumeric(period) || period < 0) {
+ period = 0;
+ }
+ if (!scheduler || typeof scheduler.schedule !== 'function') {
+ scheduler = async;
+ }
+ return new Observable(function (subscriber) {
+ subscriber.add(scheduler.schedule(dispatch, period, { subscriber: subscriber, counter: 0, period: period }));
+ return subscriber;
+ });
+}
+function dispatch(state) {
+ var subscriber = state.subscriber, counter = state.counter, period = state.period;
+ subscriber.next(counter);
+ this.schedule({ subscriber: subscriber, counter: counter + 1, period: period }, period);
+}
+//# sourceMappingURL=interval.js.map