fix: use react-jsx transform and support ES2021 types

Author: adamstankiewicz

tsconfig.json

@@ -5,8 +5,8 @@
     "declaration": true,
     "esModuleInterop": true,
     "forceConsistentCasingInFileNames": true,
-    "jsx": "react",
-    "lib": ["dom", "es6", "dom.iterable"],
+    "jsx": "react-jsx",
+    "lib": ["DOM", "ES6", "DOM.Iterable", "ES2021"],
     "isolatedModules": true,
     "module": "ES6",
     "moduleResolution": "node",