https://biii.eu/modules/contrib/antibot/js/antibot.js?tm1kd4

1/**
2 * @file
3 * Unlock protected forms.
4 *
5 * This works by resetting the form action to the path that It should be as well
6 * as injecting the secret form key, only if the current user is verified to be
7 * human which is done by waiting for a mousemove, swipe, or tab/enter key to be
8 * pressed.
9 */
10
11(function (Drupal, drupalSettings) {
12  "use strict";
13
14  drupalSettings.antibot = drupalSettings.antibot || {};
15  Drupal.antibot = {};
16
17  Drupal.behaviors.antibot = {
18    attach: function (context, settings) {
19      drupalSettings = settings;
20      // Assume the user is not human, despite JS being enabled.
21      drupalSettings.antibot.human = false;
22
23      // Wait for a mouse to move, indicating they are human.
24      document.body.addEventListener('mousemove', function () {
25        // Unlock the forms.
26        Drupal.antibot.unlockForms();
27      });
28
29      // Wait for a touch move event, indicating that they are human.
30      document.body.addEventListener('touchmove', function () {
31        // Unlock the forms.
32        Drupal.antibot.unlockForms();
33      });
34
35      // A tab or enter key pressed can also indicate they are human.
36      document.body.addEventListener('keydown', function (e) {
37        if ((e.code == 'Tab') || (e.code == 'Enter')) {
38          // Unlock the forms.
39          Drupal.antibot.unlockForms();
40        }
41      });
42    }
43  };
44
45  /**
46   * Unlock all locked forms.
47   */
48  Drupal.antibot.unlockForms = function () {
49    // Act only if we haven't yet verified this user as being human.
50    if (!drupalSettings.antibot.human) {
51      // Check if there are forms to unlock.
52      if (drupalSettings.antibot.forms != undefined) {
53        // Iterate all antibot forms that we need to unlock.
54        Object.values(drupalSettings.antibot.forms).forEach(function (config) {
55          // Switch the action.
56          const form = document.getElementById(config.id);
57          if (form) {
58            form.setAttribute('action', form.getAttribute('data-action'));
59
60            // Set the key.
61            const input = form.querySelector('input[name="antibot_key"]');
62            if (input) {
63              input.value = config.key.split("").reverse().join("").match(/.{1,2}/g).map((value) => value.split("").reverse().join("")).join("");
64            }
65          }
66        });
67      }
68      // Mark this user as being human.
69      drupalSettings.antibot.human = true;
70    }
71  };
72})(Drupal, drupalSettings);