@ezy/coerce-middleware

coerce req.query, req.params or req.body

Why

Validation logic become simpler when it's possible to expect "typed" datas, but datas parsed from url like req.query or req.params are strings.

Install

npm i @ezy/coerce-middleware

Usage

Common

import { coerce } from '@ezy/coerce-middleware';
import express from 'express';
const app = express();

app.use(coerce('query'));

app.get('/', (req, res) => {
  res.send(JSON.stringify(req.query));
});

app.listen(3000);

// GET /?id=30&is_admin=true&name=awesome%20title
// => {
//   name: 'awesome title',
//   id: 30,
//   is_admin: true
// }

use a custom coercePrimitive function

import { coerce } from '@ezy/coerce-middleware';
import express from 'express';
const app = express();

app.use(coerce('query', value => '(^^)'));

app.get('/', (req, res) => {
  res.send(JSON.stringify(req.query));
});

app.listen(3000);

// GET /?id=30&is_admin=true&nested[name]=awesome%20title
// => {
//   nested: {
//      name: '(^^)'
//   },
//   id: '(^^)',
//   is_admin: '(^^)'
// }

Links

• API docs
• Playground