node_modules/rxjs/dist/esm5/internal/observable/range.js

import { Observable } from '../Observable';
import { EMPTY } from './empty';
export function range(start, count, scheduler) {
    if (count == null) {
        count = start;
        start = 0;
    }
    if (count <= 0) {
        return EMPTY;
    }
    var end = count + start;
    return new Observable(scheduler
        ?
            function (subscriber) {
                var n = start;
                return scheduler.schedule(function () {
                    if (n < end) {
                        subscriber.next(n++);
                        this.schedule();
                    }
                    else {
                        subscriber.complete();
                    }
                });
            }
        :
            function (subscriber) {
                var n = start;
                while (n < end && !subscriber.closed) {
                    subscriber.next(n++);
                }
                subscriber.complete();
            });
}
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