@daiso-tech/core/dist/async/backof-policies/polynomial-backoff-policy/polynomial-backoff-policy.js

The library offers flexible, framework-agnostic solutions for modern web applications, built on adaptable components that integrate seamlessly with popular frameworks like Next Js.

/**
 * @module Async
 */
import { TimeSpan } from "../../../utilities/_module-exports.js";
import { withJitter } from "../../../async/backof-policies/_shared.js";
/**
 * Polynomial backoff policy with jitter
 *
 * IMPORT_PATH: `"@daiso-tech/core/async"`
 * @group BackoffPolicies
 */
export function polynomialBackoffPolicy(settings = {}) {
    return (attempt, error) => {
        if (typeof settings === "function") {
            settings = settings(error);
        }
        let { maxDelay = 6000, minDelay = 1_000 } = settings;
        if (maxDelay instanceof TimeSpan) {
            maxDelay = maxDelay.toMilliseconds();
        }
        if (minDelay instanceof TimeSpan) {
            minDelay = minDelay.toMilliseconds();
        }
        const { degree = 2, jitter = 0.5, _mathRandom = Math.random, } = settings;
        const polynomial = Math.min(maxDelay, minDelay * Math.pow(attempt, degree));
        return withJitter(jitter, polynomial, _mathRandom);
    };
}
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