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Patch When Available Library

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

This script should not be not be installed directly. It is a library for other scripts to include with the meta directive // @require https://update.greatest.deepsurf.us/scripts/428034/941202/Patch%20When%20Available%20Library.js 

  1. // ==UserScript==
  2. // @name         Patch When Available Library
  3. // @namespace    hoehleg.userscripts.private
  4. // @version      0.1
  5. // @description  Calls a function (getExpectedFnc()) repeatedly until it gives an expected result (confirmIsAvailableFnc()). Forwards it to (doPatchFnc()).
  6. // @author       Gerrit Höhle
  7. // @grant        none
  8. // ==/UserScript==
  9.  
  10. /* jslint esnext: true */
  11. const patchWhenAvailable = ({ getExpectedFnc, doPatchFnc, confirmIsAvailableFnc = null, timeOutRetryMillis = 200, maxPeriodTryMillis = 5000 }) => {
  12.     const valueOrObject = getExpectedFnc();
  13.     const isAvailable = confirmIsAvailableFnc ? confirmIsAvailableFnc(valueOrObject) : !!valueOrObject;
  14.     
  15.     if (!isAvailable) {
  16.         if (timeOutRetryMillis <= maxPeriodTryMillis) {
  17.  
  18.             setTimeout(() => {
  19.                 maxPeriodTryMillis -= timeOutRetryMillis;
  20.                 patchWhenAvailable({ getExpectedFnc, doPatchFnc, confirmIsAvailableFnc, timeOutRetryMillis, maxPeriodTryMillis });
  21.  
  22.             }, timeOutRetryMillis);
  23.         }
  24.  
  25.         return;
  26.     }
  27.  
  28.     doPatchFnc(valueOrObject);
  29. };