fix build

tsconfig.cjs.json

   "extends": "./tsconfig.json",
   "compilerOptions": {
     "module": "commonjs",
-    "rootDir": "./src",
-    "outDir": "dist/cjs",
+    "rootDir": "src",
+    "outDir": "dist",
     "declaration": true,
     "declarationDir": "dist/types",
     "sourceMap": false

tsconfig.json

     "rootDirs": ["src", "example"],
     "outDir": "lib/"
   },
-  "include": ["src/**/*", "example/**/*"]
+  "include": ["src/**/*"]
 }