switch to typescript

package.json

@@ -16,7 +16,9 @@
     "workflow-function-manifold": "./bin.js"
   },
   "scripts": {
-    "start": "node index.js",
+    "start": "node bin.js",
+    "dev": "node bin.js",
+    "cli": "bun cli.ts",
     "test": "echo \"Error: no test specified\" && exit 1",
     "lint": "eslint . --ext .js,.jsx,.ts,.tsx",
     "deploy:dev": "pnpm publish .",
@@ -29,8 +31,11 @@
   "license": "MIT",
   "devDependencies": {
     "@eslint/js": "^9.14.0",
+    "@types/bun": "^1.1.13",
+    "bun": "^1.1.34",
     "eslint": "^9.14.0",
     "globals": "^15.12.0",
-    "prettier": "^3.3.3"
+    "prettier": "^3.3.3",
+    "typescript": "^5.6.3"
   }
 }