You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
21 lines
758 B
21 lines
758 B
4 years ago
|
import { Observable } from '../Observable';
|
||
|
|
import { async } from '../scheduler/async';
|
||
|
|
import { isNumeric } from '../util/isNumeric';
|
||
|
|
export function interval(period = 0, scheduler = async) {
|
||
|
|
if (!isNumeric(period) || period < 0) {
|
||
|
|
period = 0;
|
||
|
|
}
|
||
|
|
if (!scheduler || typeof scheduler.schedule !== 'function') {
|
||
|
|
scheduler = async;
|
||
|
|
}
|
||
|
|
return new Observable(subscriber => {
|
||
|
|
subscriber.add(scheduler.schedule(dispatch, period, { subscriber, counter: 0, period }));
|
||
|
|
return subscriber;
|
||
|
|
});
|
||
|
|
}
|
||
|
|
function dispatch(state) {
|
||
|
|
const { subscriber, counter, period } = state;
|
||
|
|
subscriber.next(counter);
|
||
|
|
this.schedule({ subscriber, counter: counter + 1, period }, period);
|
||
|
|
}
|
||
|
|
//# sourceMappingURL=interval.js.map
|