web: Update dependencies, fix error messages not working

Author: asiekierka

web/package.json

@@ -6,19 +6,19 @@
   "scripts": {
     "build": "node_modules/.bin/rollup -c --bundleConfigAsCjs"
   },
-  "browserslist": "firefox >= 55, and_ff >= 55, chrome >= 60, and_chr >= 60, ios >= 12, safari >= 12, samsung >= 5, and_uc >= 11.8, opera >= 47, op_mob >= 47, baidu >= 7",
+  "browserslist": ["defaults"],
   "author": "asie",
-  "license": "GPL-3.0-or-later",
+  "license": "MIT",
   "devDependencies": {
     "@babel/core": "^7.26.10",
     "@babel/preset-env": "^7.26.9",
     "@rollup/plugin-babel": "^6.0.4",
-    "@rollup/plugin-node-resolve": "^15.3.1",
+    "@rollup/plugin-node-resolve": "^16.0.1",
     "@rollup/plugin-terser": "^0.4.4",
-    "rollup": "^3.29.5",
+    "rollup": "^4.46.2",
     "rollup-plugin-banner2": "^1.3.1"
   },
   "dependencies": {
-    "core-js": "^3.41.0"
+    "core-js": "^3.44.0"
   }
 }

web/src/index.js

@@ -216,7 +216,7 @@ window.ZetaInitialize = function(options, callback) {
             return emu;
         });
     }).then(_ => true).catch(reason => {
-        callback(undefined, reason);
+        if (callback != null) callback(undefined, reason);
         drawErrorMessage(canvas, ctx, reason);
     });
 }