Redirect to embed video when you open a youtube video link

tampermonkey_youtube_redirect.js

// ==UserScript==
// @name         Redirect to embed for youtube
// @namespace    com.leobenkel
// @version      0.1
// @description  Redirect to embed video when you open a youtube video link
// @author       Leo Benkel
// @match        https://www.youtube.com/watch?v=*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    var input = window.location.href;
    var getArgs = input.split('?')[1];
    var getPairs = getArgs.split("&").map(function(x) {
      var pair = x.split("=")
      return pair;
    })
    .reduce(function(map, obj) {
        map[obj[0]] = obj[1];
        return map;
    }, {});

    var videoId = getPairs.v;

    var validPairs = {'v': videoId, 'feature': "emb_rel_end"};
    var validKeys = Object.keys(validPairs);

    var values = Object.values(getPairs);
    var keys = Object.keys(getPairs);

    var myArray = keys.map(function(e, i) {
        return [e, values[i]];
    });
    var filteredValues = myArray.filter(function(pair) {
        var key = pair[0];
        var value = pair[1];
        console.log(key);
        console.log(value);
        var isValid = validKeys.includes(key) && validPairs[key] == value;
        return !isValid;
    });

    if (filteredValues.length == 0) {
        var url = 'https://www.youtube.com/embed/' + videoId
        window.location = url
    }
})();