cleanup test infra

package.json

@@ -31,30 +31,26 @@
   ],
   "scripts": {
     "docs": "typedoc",
-    "test:node": "mocha",
-    "test:browser": "karma start .karma.cjs --single-run",
-    "test": "run-s build test:*",
+    "test:node": "vitest",
+    "test:browsers": "zx test.browsers.js",
+    "test": "CI=1 run-s build test:*",
     "build": "tsc",
     "clean": "rm -rf ./dist",
-    "dev": "run-p -ln dev:*",
-    "dev:build": "tsc -w",
-    "dev:test:node": "mocha --parallel --watch",
-    "dev:test:browser": "karma start .karma.cjs",
-    "prepublishOnly": "run-s clean build"
+    "dev": "vitest",
+    "prepublishOnly": "run-s clean test"
   },
   "devDependencies": {
-    "@endyjasmi/karma-playwright-launcher": "^0.0.4",
-    "@types/node": "^20.11.30",
-    "chai": "^4.4.1",
-    "karma": "^6.4.3",
-    "karma-mocha": "^2.0.1",
-    "mocha": "^10.3.0",
+    "@tsconfig/strictest": "^2.0.5",
+    "@types/node": "^22.0.0",
+    "@vitest/browser": "^2.0.4",
     "npm-run-all": "^4.1.5",
-    "playwright": "^1.42.1",
-    "typedoc": "^0.25.12",
-    "typescript": "^5.4.2"
+    "playwright": "^1.45.3",
+    "typedoc": "^0.26.5",
+    "typescript": "^5.5.4",
+    "vitest": "^2.0.4",
+    "zx": "^8.1.4"
   },
-  "packageManager": "pnpm@8.15.5",
+  "packageManager": "pnpm@9.6.0",
   "engines": {
     "node": ">=16",
     "npm": "please-use-pnpm",