🔧 Add TypeScript config

tsconfig.json

@@ -0,0 +1,20 @@
+{
+  "compilerOptions": {
+    "moduleResolution": "node",
+    "target": "esnext",
+    "module": "commonjs",
+    "lib": ["dom", "esnext"],
+    "strict": true,
+    "sourceMap": true,
+    "declaration": true,
+    "esModuleInterop": true,
+    "allowSyntheticDefaultImports": true,
+    "experimentalDecorators": true,
+    "emitDecoratorMetadata": true,
+    "declarationDir": "./dist",
+    "outDir": "./dist",
+    "typeRoots": ["node_modules/@types", "@types"]
+  },
+  "include": ["update.ts", "readme.ts"],
+  "exclude": ["node_modules"]
+}