backoff-rxjs/dist/esm5/observable/intervalBackoff.js

A collection of helpful RxJS operators to deal with backoff strategies (like exponential backoff)

import { of, timer, asyncScheduler, expand, mapTo } from 'rxjs';
import { exponentialBackoffDelay, getDelay } from '../utils';
export function intervalBackoff(config, scheduler) {
    if (scheduler === void 0) { scheduler = asyncScheduler; }
    var _a = typeof config === 'number' ? { initialInterval: config } : config, initialInterval = _a.initialInterval, _b = _a.maxInterval, maxInterval = _b === void 0 ? Infinity : _b, _c = _a.backoffDelay, backoffDelay = _c === void 0 ? exponentialBackoffDelay : _c;
    initialInterval = initialInterval < 0 ? 0 : initialInterval;
    return of(0, scheduler).pipe(expand(function (iteration) {
        return timer(getDelay(backoffDelay(iteration, initialInterval), maxInterval))
            .pipe(mapTo(iteration + 1));
    }));
}