jsowell-charger-web/jsowell-ui/node_modules/rxjs/_esm2015/internal/observable/timer.js

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