Express Body Response Middleware

This library exports a middleware to append to your expressjs app. The exported middleware allows you to get response body in an easy way.

Main points

• the library is agnostic from any dependency (except, of course, expressjs). The middleware can be plugged into your express middlewares chain (e.g. you don't have to install morgan in your app)
• the middleware can be used both synchronously and asynchronously
• the middleware works even if the body response is compressed with compression library

import bodyResponseMiddleware from 'express-body-response-middleware';

const app = express();

const onSuccess = (body: string) => console.log(body);
const onError = (err: Error) => { throw err };

app.use(bodyResponseMiddleware(onSuccess, onError));

Install

This is a Node.js module available through the npm registry. Installation is done using the npm install command

npm install --save express-body-response-middleware

Usage

In your app.ts file you have to define onSuccess and onError functions, then append the middleware to you expressjs app.

Examples

Print body response to stdout

import bodyResponseMiddleware from 'express-body-response-middleware';

const app = express();

const onSuccess = (body: string) => console.log(body);
const onError = (err: Error) => { throw err };

app.use(bodyResponseMiddleware(onSuccess, onError));

Write body response to filesystem

import bodyResponseMiddleware from 'express-body-response-middleware';
import fs from "fs";

const app = express();

const onSuccess = (body: string) => fs.writeFileSync("body-response.log", body);
const onError = (err: Error) => { throw err };

app.use(bodyResponseMiddleware(onSuccess, onError));

License

MIT