feat: add tsconfig

Author: oriondean

tsconfig.json

@@ -0,0 +1,10 @@
+{
+  "compilerOptions": {
+    "module": "umd",
+    "target": "es5",
+    "outDir": "lib"
+  },
+  "exclude": [
+    "node_modules"
+  ]
+}