chore(rollup.config.js): remove build warning message

Author: stegano

rollup.config.js

@@ -5,7 +5,9 @@ export default {
   input: "./src/index.ts",
   output: {
     file: "./build/index.js",
-    format: "cjs"
+    format: "cjs",
+    exports: "named"
   },
-  plugins: [typescript(), uglify()]
+  plugins: [typescript(), uglify()],
+  external: ['next', 'http-proxy']
 };

src/index.ts

@@ -1,6 +1,5 @@
 import { NextApiResponse, NextApiRequest } from "next";
-import { ServerOptions } from "http-proxy";
-import httpProxy from "http-proxy";
+import httpProxy, { ServerOptions } from "http-proxy";
 export interface NextHttpProxyMiddlewareOptions extends ServerOptions {
   pathRewrite?: { [key: string]: string };
 }
@@ -47,12 +46,12 @@ const httpProxyMiddleware = async (
     if (pathRewrite) {
       req.url = rewritePath(req.url as string, pathRewrite);
     }
-    if(["POST", "PUT"].indexOf(req.method as string) >= 0 && typeof req.body === "object"){
+    if (["POST", "PUT"].indexOf(req.method as string) >= 0 && typeof req.body === "object") {
       req.body = JSON.stringify(req.body);
     }
     proxy
       .once("proxyReq", ((proxyReq: any, req: any): void => {
-        if(["POST", "PUT"].indexOf(req.method as string) >= 0 && typeof req.body === "string"){
+        if (["POST", "PUT"].indexOf(req.method as string) >= 0 && typeof req.body === "string") {
           proxyReq.write(req.body);
           proxyReq.end();
         }