https://www.stentor-music.com/common/js/forms/field-kit.js?v=255

1; (function (root, factory) {
2    const ns = root.FieldKit = root.FieldKit || {};
3    ns.icons = ns.icons || {};
4    factory(ns, root);
5})(window, function (ns, root) {
6    const { Field, FieldGroup } = ns;
7
8    /**
9     * Scan `root` for `[data-field]` elements and upgrade them to {@link Field}s.
10     *
11     * @param {ParentNode} root subtree to initialize
12     * @returns {void}
13     */
14    function init(root = document) {
15        root.querySelectorAll('[data-field]').forEach(el => new Field(el));
16    }
17
18    /**
19     * Bulk-apply validation messages.
20     *
21     * ```
22     * // global
23     * setErrors({ email : 'Taken' });
24     *
25     * // scoped to a specific form
26     * setErrors({ password: 'Wrong' }, formEl);
27     * ```
28     *
29     * @param {Object} object
30     * @param {HTMLElement|string|null} scope Form, group or CSS selector
31     * @returns {void}
32     */
33    function setErrors(object = {}, scope = null) {
34        if (scope) {
35            const host = typeof scope === 'string'
36                ? document.querySelector(scope)
37                : scope;
38            if (host) {
39                FieldGroup.get(host).setErrors(object);
40            }
41        } else {
42            // apply to every existing group (forms + data-field-group + body fallback)
43            document.querySelectorAll('form,[data-field-group], body').forEach(host =>
44                FieldGroup.get(host).setErrors(object)
45            );
46        }
47    }
48
49    // auto-init on DOM ready
50    document.addEventListener('DOMContentLoaded', () => {
51        if (!root.__FIELDKIT_READY) {
52            init();
53            root.__FIELDKIT_READY = true;
54        }
55    });
56
57    root.FieldKit = root.FieldKit || {};
58    Object.assign(root.FieldKit, { init, setErrors });
59
60    // namespace export
61    ns.init = init;
62    ns.setErrors = setErrors;
63});