How to close chrome browser window using tampermonkey

Question

Am trying to close chrome browser windows using tampermonkey but am not getting desire result fully. the code works when there is time out condition occur , it kill the tab but the 2nd condition where task is completed then window.close() is not working and even if task is completed when timeout occur the browser tab get killed. so its very strange issue i not understand why window.close() is working it one point and not working it another point , i even swapped both if block up and down but no success. so any idea what am doing wrong.

my code

// ==UserScript==
// @name         chromium windows / tab close
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  used by my APP to close chromium browser window
// @author       mee
// @grant        window.close
// @require      https://code.jquery.com/jquery-3.5.1.min.js
// ==/UserScript==

var stime = 0;
var timeout = 300; // 5 min

// millis to seconds
function miliseconds_to_seconds(millis) {
  return ((millis % 60000) / 1000).toFixed(0);
}

// close browser
function close_browser(){
    // get task progress
    let progress = $("#close_browser").val();
    let kill_it = false;
    
    // check for task time out
    let ctime = performance.now();
    let time_passed = miliseconds_to_seconds(ctime - stime); // in sec
    console.log("Time Passed : "+time_passed+'  gviewer progress : '+progress);
    if(time_passed >= timeout){
        console.log('closing tab time out');
        window.close(); // kill tab ........ WORKING OK
    }
    
    // check if task is completed
    if(progress == 100){
        console.log('closing tab task done');
        window.close(); // kill tab  ............ NOT WORKING 
        timeout = 0; // will force to execute condition 1 but it will not close window till the real timeout is over mean 300 sec.
    }

}

$(document).ready(function() {
       stime = performance.now();
       var intervalID = setInterval(close_browser, 5000);
});

Answer 1

Tampermonkey not allowing window.close is a feature to stop scripts like:

//@match *://*/*
(function() {
    'use strict';
    window.close();
})