build(tooling): modernize Node and TypeScript setup

tsconfig.test.json

@@ -1,8 +1,8 @@
 {
     "extends": "./tsconfig.json",
     "compilerOptions": {
-        "isolatedModules": true,
-        "outDir": "./dist-test"
+        "outDir": "./dist-test",
+        "skipLibCheck": true
     },
     "include": ["src/**/*.ts", "tests/**/*.ts", "tsup.config.ts"]
 }