refactor: allow CommonJS require() without .default (#150)

Author: mattbretl

src/index.ts

@@ -79,4 +79,6 @@ const PostGraphileConnectionFilterPlugin: Plugin = (builder, configOptions) => {
   PgConnectionArgFilterOperatorsPlugin(builder, options);
 };
 
-export default PostGraphileConnectionFilterPlugin;
+// TODO: In the next major version, change `export =` to `export default`.
+// This will be a breaking change for CommonJS users.
+export = PostGraphileConnectionFilterPlugin;

tsconfig.json

@@ -19,6 +19,7 @@
     "noUnusedParameters": true,
     "noUnusedLocals": true,
     "preserveWatchOutput": true,
+    "esModuleInterop": true,
     "lib": ["es2018", "esnext.asynciterable"]
   },
   "include": ["src/**/*"]