Change module output to commonjs

Author: helfer

tsconfig.json

@@ -1,7 +1,7 @@
 {
     "compilerOptions": {
         "declaration": true,
-        "module": "esnext",
+        "module": "commonjs",
         "moduleResolution": "node",
         "noImplicitAny": true,
         "lib": ["esnext"],
@@ -17,4 +17,4 @@
         "node_modules",
         "**/*.test.ts"
     ]
-}
+}