Много разных изменений

frontend/admin/js/url-state.js

@@ -0,0 +1,34 @@
+export function readUrlState(defaults = {}) {
+    const params = new URLSearchParams(window.location.search);
+    return Object.fromEntries(Object.entries(defaults).map(([key, fallback]) => [
+        key,
+        params.has(key) ? params.get(key) : fallback
+    ]));
+}
+
+export function writeUrlState(changes, { replace = true } = {}) {
+    const url = new URL(window.location.href);
+    Object.entries(changes).forEach(([key, value]) => {
+        if (value === undefined || value === null || value === '' || value === false) {
+            url.searchParams.delete(key);
+        } else if (Array.isArray(value)) {
+            url.searchParams.delete(key);
+            value.forEach(item => url.searchParams.append(key, String(item)));
+        } else {
+            url.searchParams.set(key, String(value));
+        }
+    });
+    window.history[replace ? 'replaceState' : 'pushState']({}, '', `${url.pathname}${url.search}${url.hash}`);
+}
+
+export function readUrlValues(key) {
+    return new URLSearchParams(window.location.search).getAll(key);
+}
+
+export function debounce(callback, delay = 320) {
+    let timer = null;
+    return (...args) => {
+        window.clearTimeout(timer);
+        timer = window.setTimeout(() => callback(...args), delay);
+    };
+}