Drop IE support for the bundled script

babel.config.cjs

@@ -26,21 +26,7 @@ module.exports = function config(api) {
   }
 
   return {
-    presets: [
-      [
-        "@babel/preset-env",
-        {
-          targets: {
-            ie: "10",
-          },
-          loose: true,
-        },
-      ],
-    ],
-    plugins: [
-      "@babel/plugin-transform-runtime",
-      "babel-plugin-transform-async-to-promises",
-      "@babel/plugin-proposal-object-rest-spread",
-    ],
+    presets: [["@babel/preset-env"]],
+    plugins: ["@babel/plugin-transform-runtime"],
   };
 };

package.json

@@ -3,15 +3,13 @@
   "type": "module",
   "devDependencies": {
     "@babel/core": "^7.26.0",
-    "@babel/plugin-proposal-object-rest-spread": "^7.16.5",
     "@babel/plugin-transform-modules-commonjs": "^7.26.3",
     "@babel/plugin-transform-react-jsx": "^7.25.9",
     "@babel/plugin-transform-runtime": "^7.25.9",
     "@babel/preset-env": "^7.26.0",
     "@babel/runtime": "^7.26.0",
     "babel-jest": "^29.7.0",
     "babel-plugin-jsx-pragmatic": "^1.0.2",
-    "babel-plugin-transform-async-to-promises": "^0.8.18",
     "babelify": "^10.0.0",
     "babylon": "^6.18.0",
     "browser-pack-flat": "^3.5.0",
@@ -49,11 +47,12 @@
   "bundlesize": [
     {
       "path": "./packages/client/dist/xmpp.min.js",
-      "maxSize": "17 KB"
+      "maxSize": "15 KB"
     }
   ],
   "lint-staged": {
     "*.{js,cjs,mjs}": "eslint --cache --fix",
     "*.{json,md,html,css,yaml,yml}": "prettier --write"
-  }
+  },
+  "browserslist": "> 0.25%, not dead"
 }