new functions and fixes

static/js/vendor-libs.js

@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2026 Mateusz Gruszczyński @linuxiarz.pl
+ * Source-Available Code / Dual-Licensed.
+ */
+
+const config = window.__RUSTPAD_CONFIG__ || {};
+const assetVersion = encodeURIComponent(String(config.assetVersion || "dev"));
+const promiseCache = new Map();
+
+function localAsset(path) {
+  const separator = path.includes("?") ? "&" : "?";
+  return `${path}${separator}v=${assetVersion}`;
+}
+
+function once(key, factory) {
+  if (!promiseCache.has(key)) promiseCache.set(key, Promise.resolve().then(factory));
+  return promiseCache.get(key);
+}
+
+function loadClassicScript(path, globalName) {
+  return once(path, () => new Promise((resolve, reject) => {
+    const existing = document.querySelector(`script[data-rustpad-lib="${globalName}"]`);
+    if (existing && window[globalName]) {
+      resolve(window[globalName]);
+      return;
+    }
+    const script = existing || document.createElement("script");
+    script.src = localAsset(path);
+    script.async = true;
+    script.dataset.rustpadLib = globalName;
+    script.addEventListener("load", () => {
+      if (window[globalName]) resolve(window[globalName]);
+      else reject(new Error(`${globalName} did not register a browser global.`));
+    }, { once: true });
+    script.addEventListener("error", () => reject(new Error(`Failed to load ${path}.`)), { once: true });
+    if (!existing) document.head.append(script);
+  }));
+}
+
+export function loadHighlight() {
+  return loadClassicScript("/assets/libs/highlight/highlight.min.js", "hljs");
+}
+
+export function loadMermaid() {
+  return once("mermaid", async () => {
+    const module = await import(localAsset("/assets/libs/mermaid/mermaid.esm.min.mjs"));
+    return module.default;
+  });
+}
+
+export function loadMediaPlayer() {
+  return once("rustpad-player", () => import(localAsset("/assets/libs/rustpad-player/player.js")));
+}