query-stringvsip
The query-string library is a Node.js library that provides a simple way to parse and stringify query strings. It is useful for working with the query string portion of a URL, which is the part of the URL that follows 'the "?" character and contains key-value pairs.
The "ip" library is a Node.js library that provides utility functions for working with IP addresses. It provides functions for parsing, validating, and converting IP addresses between different formats.
The "ip" library provides a simple and easy-to-use interface for working with IP addresses in Node.js. It can be useful in a variety of contexts, such as when creating a network-related application or when working with IP addresses in a web application.
Example Use
```javascript
import queryString from 'query-string';
console.log(location.search);
//=> '?foo=bar'
const parsed = queryString.parse(location.search);
console.log(parsed);
//=> {foo: 'bar'}
console.log(location.hash);
//=> '#token=bada55cafe'
const parsedHash = queryString.parse(location.hash);
console.log(parsedHash);
//=> {token: 'bada55cafe'}
parsed.foo = 'unicorn';
parsed.ilike = 'pizza';
const stringified = queryString.stringify(parsed);
//=> 'foo=unicorn&ilike=pizza'
location.search = stringified;
// note that `location.search` automatically prepends a question mark
console.log(location.search);
//=> '?foo=unicorn&ilike=pizza'
```
```javascript
const ip = require('ip');
// check IP validity:
console.log(ip.isV4Format('192.168.1.1')); // true
console.log(ip.isV4Format('2001:0db8:85a3:0000:0000:8a2e:0370:7334')); // false
// check subnets
console.log(ip.cidrSubnet('192.168.1.1/24')); // { networkAddress: '192.168.1.0', broadcastAddress: '192.168.1.255' }
console.log(ip.not('255.255.255.255')); // '0.0.0.0'
```