feat: add initial code

tsconfig.json

@@ -0,0 +1,19 @@
+{
+  "compilerOptions": {
+    "lib": ["es2017"],
+    "module": "commonjs",
+    "declaration": true,
+    "noImplicitAny": false,
+    "removeComments": true,
+    "noLib": false,
+    "allowSyntheticDefaultImports": true,
+    "emitDecoratorMetadata": true,
+    "experimentalDecorators": true,
+    "target": "es6",
+    "sourceMap": true,
+    "outDir": "./dist",
+    "baseUrl": "./lib"
+  },
+  "include": ["lib/**/*"],
+  "exclude": ["node_modules"]
+}