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Patch When Available Library

Calls a function (getExpectedFnc()) repeatedly until it gives an expected result (confirmIsAvailableFnc()). Forwards it to (doPatchFnc()).

Ten skrypt nie powinien być instalowany bezpośrednio. Jest to biblioteka dla innych skyptów do włączenia dyrektywą meta // @require https://update.greatest.deepsurf.us/scripts/428034/941202/Patch%20When%20Available%20Library.js 

// ==UserScript==
// @name         Patch When Available Library
// @namespace    hoehleg.userscripts.private
// @version      0.1
// @description  Calls a function (getExpectedFnc()) repeatedly until it gives an expected result (confirmIsAvailableFnc()). Forwards it to (doPatchFnc()).
// @author       Gerrit Höhle
// @grant        none
// ==/UserScript==
 
/* jslint esnext: true */
const patchWhenAvailable = ({ getExpectedFnc, doPatchFnc, confirmIsAvailableFnc = null, timeOutRetryMillis = 200, maxPeriodTryMillis = 5000 }) => {
    const valueOrObject = getExpectedFnc();
    const isAvailable = confirmIsAvailableFnc ? confirmIsAvailableFnc(valueOrObject) : !!valueOrObject;
    
    if (!isAvailable) {
        if (timeOutRetryMillis <= maxPeriodTryMillis) {

            setTimeout(() => {
                maxPeriodTryMillis -= timeOutRetryMillis;
                patchWhenAvailable({ getExpectedFnc, doPatchFnc, confirmIsAvailableFnc, timeOutRetryMillis, maxPeriodTryMillis });

            }, timeOutRetryMillis);
        }

        return;
    }

    doPatchFnc(valueOrObject);
};