Add ts config.

Author: rickypc

tsconfig.json

@@ -0,0 +1,10 @@
+{
+  "compilerOptions": {
+    "allowJs": true,
+    "declaration": true,
+    "emitDeclarationOnly": true,
+    "outDir": "dist"
+  },
+  "exclude": [],
+  "include": ["src/*.js"]
+}