diff --git a/karma.conf.cjs b/karma.conf.cjs
index b3c8d77..189daa4 100644
--- a/karma.conf.cjs
+++ b/karma.conf.cjs
@@ -36,11 +36,6 @@ module.exports = function (config) {
     },
     webpack: {
       mode: "production",
-      resolve: {
-        // Add `.ts` and `.tsx` as a resolvable extension.
-        extensions: [".ts", ".tsx", ".js"],
-        plugins: [new ResolveTypeScriptPlugin()],
-      },
       module: {
         rules: [
           {
diff --git a/package.json b/package.json
index 9e07e17..bed2817 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "test:spelling": "cspell \"{*.md,.github/*.md,src/**/*.ts}\"",
     "test:prettier": "prettier \"src/**/*.ts\" \"*.*js\" \".github/**/*.yml\" --list-different",
     "test:tsc": "tsc -p tsconfig.dev.json",
-    "test:browser": "karma start -logLevel=DEBUG karma.conf.cjs",
+    "test:browser": "karma start karma.conf.cjs",
     "watch:build": "tsc -p tsconfig.json -w",
     "watch:test": "mocha --watch --parallel",
     "prepublish": "npm run build",