Include "modulePathResolver" in resolvers module

examples/5-custom-operation-resolver/app.js

@@ -4,7 +4,7 @@ const cookieParser = require('cookie-parser');
 const bodyParser = require('body-parser');
 const logger = require('morgan');
 const http = require('http');
-const { OpenApiValidator } = require('express-openapi-validator');
+const { OpenApiValidator, resolvers } = require('express-openapi-validator');
 
 const port = 3000;
 const app = express();
@@ -30,18 +30,7 @@ new OpenApiValidator({
     basePath: path.join(__dirname, 'routes'),
     // 4. Provide a function responsible for resolving an Express RequestHandler 
     //    function from the current OpenAPI Route object.
-    resolver: function (basePath, route) {
-      [controller, method] = route.schema['operationId'].split('.')
-
-      const modulePath = path.join(basePath, controller);
-      const handler = require(modulePath)
-
-      if (handler[method] === undefined) {
-        throw new Error(`Couldn't find a [${method}] function in ${modulePath} when trying to route [${route.method} ${route.expressRoute}].`)
-      }
-
-      return handler[method]
-    }
+    resolver: resolvers.modulePathResolver
   }
 })
   .install(app)

src/index.ts

@@ -30,6 +30,8 @@ export {
   Forbidden,
 } from './framework/types';
 
+export * as resolvers from './resolvers'
+
 export class OpenApiValidator {
   private readonly options: OpenApiValidatorOpts;
 

src/resolvers.ts

@@ -37,4 +37,19 @@ export function defaultResolver(handlersPath: string, route: RouteMetadata): Req
     }
     return tmpModules[modulePath][oId];
   }
+}
+
+export function modulePathResolver(handlersPath: string, route: RouteMetadata): RequestHandler {
+  const [controller, method] = route.schema['operationId'].split('.')
+
+  const modulePath = path.join(handlersPath, controller);
+  const handler = require(modulePath)
+
+  if (handler[method] === undefined) {
+    throw new Error(
+      `Could not find a [${method}] function in ${modulePath} when trying to route [${route.method} ${route.expressRoute}].`
+    )
+  }
+
+  return handler[method]
 }