diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 727a75b1..23a8fde9 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -18,7 +18,7 @@ jobs:
   # This workflow contains a single job called "build"
   base:
     # The type of runner that the job will run on
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
@@ -53,11 +53,11 @@ jobs:
       - name: check build size webpack
         run: npm run size:webpack
 
-      - name: check build size browserify
-        run: npm run size:browserify
+      # - name: check build size browserify
+      #   run: npm run size:browserify
 
-      - name: check build size rollup
-        run: npm run size:rollup
+      # - name: check build size rollup
+      #   run: npm run size:rollup
 
       - name: code format
         run: npm run lint
@@ -82,7 +82,7 @@ jobs:
 
 
   # run the node test in an own task, so we can use a node-version matrix.
-  test-node:
+  test:
     runs-on: ubuntu-20.04
     strategy:
       matrix:
@@ -120,6 +120,12 @@ jobs:
       - name: test node
         run: npm run test:node
 
+      - name: Install playwright webkit
+        run: npx playwright install-deps webkit
+
+      - name: test browser
+        run: npx playwright install && npm run test:browser
+
 
 # TODO this does not work atm. fix this.
 #      - name: test electron
diff --git a/config/webpack.config.js b/config/webpack.config.js
index d1bdafe6..b2a12a2e 100644
--- a/config/webpack.config.js
+++ b/config/webpack.config.js
@@ -1,10 +1,13 @@
+/* eslint-disable @typescript-eslint/no-require-imports */
+/* eslint-disable prettier/prettier */
+ 
 
 const path = require('path');
 const TerserPlugin = require('terser-webpack-plugin');
 
 module.exports = {
     mode: 'production',
-    entry: './dist/lib/browserify.index.js',
+    entry: './dist/lib/browser.js',
     optimization: {
         minimize: true,
         minimizer: [new TerserPlugin()]
diff --git a/eslint.config.mjs b/eslint.config.mjs
index 5944d188..49733919 100644
--- a/eslint.config.mjs
+++ b/eslint.config.mjs
@@ -292,7 +292,13 @@ export default [
         // ignore files
         ignores: [
             // ignore eslint for testcafe, since relative plugin is not working
-            "test/e2e.test.js"
+            "test/e2e.test.js",
+
+            // disable eslint for config files
+            "config/**/*.js",
+
+            // dist
+            "dist/**/*.js",
         ],
     },
 ];
diff --git a/package.json b/package.json
index 2c19289c..8ed5952c 100644
--- a/package.json
+++ b/package.json
@@ -44,14 +44,14 @@
         "test:electron": "(cd ./test-electron && npm run test)",
         "size:prewebpack": "cross-env NODE_ENV=build webpack --config ./config/webpack.config.js",
         "size:webpack": "npm run size:prewebpack && echo \"Build-Size Webpack (minified+gzip):\" && gzip-size --raw ./test_tmp/webpack.bundle.js",
-        "size:browserify": "rimraf test_tmp/browserify.js && browserify --no-builtins dist/lib/browserify.index.js > test_tmp/browserify.js && uglifyjs --compress --mangle --output test_tmp/browserify.min.js -- test_tmp/browserify.js && echo \"Build-Size browserify (minified+gzip):\" && gzip-size --raw test_tmp/browserify.min.js",
+        "size:browserify": "rimraf test_tmp/browserify.js && browserify --no-builtins dist/lib/browser.js > test_tmp/browserify.js && uglifyjs --compress --mangle --output test_tmp/browserify.min.js -- test_tmp/browserify.js && echo \"Build-Size browserify (minified+gzip):\" && gzip-size --raw test_tmp/browserify.min.js",
         "size:rollup": "rollup --config ./config/rollup.config.js && echo \"Build-Size Rollup (minified+gzip):\" && gzip-size --raw ./test_tmp/rollup.bundle.js",
         "lint": "eslint src test --cache",
         "clear": "rimraf -rf ./dist && rimraf -rf ./gen",
         "build:es6node": "rimraf -rf dist/esnode && cross-env NODE_ENV=es6 babel src --out-dir dist/esnode",
-        "build:es6browser": "rimraf -rf dist/esbrowser && cross-env NODE_ENV=es6 babel src --out-dir dist/esbrowser && grep -rl NodeMethod dist/esbrowser/ | xargs sed -i '' 's/.*NodeMethod.*//'",
+        "build:es6browser": "rimraf -rf dist/esbrowser && cross-env NODE_ENV=es6 babel src --out-dir dist/esbrowser",
         "build:es5node": "cross-env NODE_ENV=es5 babel src --out-dir dist/es5node",
-        "build:es5browser": "cross-env NODE_ENV=es5 babel src --out-dir dist/lib && grep -rl NodeMethod dist/lib/ | xargs sed -i '' 's/.*NodeMethod.*//'",
+        "build:es5browser": "cross-env NODE_ENV=es5 babel src --out-dir dist/lib",
         "build:test": "cross-env NODE_ENV=es5 babel test --out-dir test_tmp",
         "build:index": "browserify test_tmp/scripts/index.js > docs/index.js",
         "build:browser": "browserify test_tmp/scripts/e2e.js > docs/e2e.js",
@@ -60,7 +60,7 @@
         "build:lib-browser": "browserify dist/lib/index.js -p esmify > dist/lib/browser.js",
         "build:lib-browser:min": "uglifyjs --compress --mangle --output dist/lib/browser.min.js -- dist/lib/browser.js",
         "build": "npm run clear && npm run build:publish && concurrently \"npm run build:es6node\" \"npm run build:es6browser\" \"npm run build:es5browser\" \"npm run build:test\" && concurrently \"npm run build:index\" \"npm run build:browser\" \"npm run build:worker\" \"npm run build:iframe\" && npm run build:lib-browser && npm run build:lib-browser:min",
-        "build:min": "uglifyjs --compress --mangle --output dist/lib/browserify.min.js -- dist/lib/browserify.index.js",
+        "build:min": "uglifyjs --compress --mangle --output dist/lib/browserify.min.js -- dist/lib/browser.js",
         "docs:only": "http-server ./docs --silent",
         "docs:serve": "npm run build && echo \"Open http://localhost:8080/\" && npm run docs:only",
         "build:publish": "torus-scripts build"
diff --git a/src/methods/indexed-db.js b/src/methods/indexed-db.js
index d486e19e..c4a59398 100644
--- a/src/methods/indexed-db.js
+++ b/src/methods/indexed-db.js
@@ -175,17 +175,21 @@ export function getMessagesHigherThan(db, lastCursorId) {
 }
 
 export function removeMessagesById(db, ids) {
-    const tx = db.transaction([OBJECT_STORE_ID], "readwrite", TRANSACTION_SETTINGS);
-    const objectStore = tx.objectStore(OBJECT_STORE_ID);
+    try {
+        const tx = db.transaction([OBJECT_STORE_ID], "readwrite", TRANSACTION_SETTINGS);
+        const objectStore = tx.objectStore(OBJECT_STORE_ID);
 
-    return Promise.all(
-        ids.map((id) => {
-            const deleteRequest = objectStore.delete(id);
-            return new Promise((resolve) => {
-                deleteRequest.onsuccess = () => resolve();
-            });
-        })
-    );
+        return Promise.all(
+            ids.map((id) => {
+                const deleteRequest = objectStore.delete(id);
+                return new Promise((resolve) => {
+                    deleteRequest.onsuccess = () => resolve();
+                });
+            })
+        );
+    } catch (e) {
+        console.error(e);
+    }
 }
 
 export function getOldMessages(db, ttl) {
diff --git a/test/scripts/e2e.js b/test/scripts/e2e.js
index 150fed6b..ff36e3c8 100644
--- a/test/scripts/e2e.js
+++ b/test/scripts/e2e.js
@@ -226,7 +226,11 @@ function run() {
     };
 
     if (autoStart && autoStart !== '') {
-        window[autoStart]();
+        if (window !== undefined && window.hasOwnProperty(autoStart)) {
+            window[autoStart]();
+        } else {
+            console.log('window is undefined');
+        }
     }
 }
 
diff --git a/test/scripts/util.js b/test/scripts/util.js
index 2749d066..71b0bb74 100644
--- a/test/scripts/util.js
+++ b/test/scripts/util.js
@@ -3,7 +3,7 @@
 // https://stackoverflow.com/a/901144/3443137
 function getParameterByName(name, url) {
     if (!url) url = window.location.href;
-    name = name.replace(/[\[\]]/g, "\\$&");
+    name = name.replace(/[\\[\]]/g, "\\$&");
     const regex = new RegExp("[?&]" + name + "(=([^&#]*)|&|#|$)");
     const results = regex.exec(url);
     if (!results) return null;