https://www.whistlerslidingcentre.com/modules/contrib/antibot/js/antibot.js?tlu16w

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((Drupal, drupalSettings) => {
12  drupalSettings.antibot = drupalSettings.antibot || {};
13  Drupal.antibot = {};
14
15  Drupal.behaviors.antibot = {
16    attach(context, settings) {
17      drupalSettings = settings;
18      // Assume the user is not human, despite JS being enabled.
19      if (typeof drupalSettings.antibot !== 'undefined') {
20        drupalSettings.antibot.human = false;
21      }
22
23      // Wait for a mouse to move, indicating they are human.
24      document.body.addEventListener('mousemove', () => {
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', () => {
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', (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 = () => {
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((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
64                .split('')
65                .reverse()
66                .join('')
67                .match(/.{1,2}/g)
68                .map((value) => value.split('').reverse().join(''))
69                .join('');
70            }
71          }
72        });
73      }
74      // Mark this user as being human.
75      drupalSettings.antibot.human = true;
76    }
77  };
78})(Drupal, drupalSettings);