Request Guard

Express middleware that validates request parameters against allowed value lists

Quick Setup

npm install request-guard

Make sure you have body-parser set up in your Express app.

How It Works

const guard = require('request-guard');

const allowedStatus = ['active', 'pending', 'archived'];

app.get('/users',
  guard('status', allowedStatus),
  (req, res) => {
    // Only reaches here if status is valid
    res.send('Status check passed!');
  }
);

If someone tries ?status=bogus, they'll get a 400 error explaining which values are allowed.

Why Use This?

• Stops invalid data early in request chain
• Clean, readable validation rules
• Works with URL params and query strings
• Tiny footprint - no extra dependencies

MIT Licensed - free to use in any project.