is-ip 
Check if a string is an IP address
Install
$ npm install --save is-ip
Usage
const isIp = require('is-ip');
isIp('192.168.0.1');
//=> true
isIp('1:2:3:4:5:6:7:8');
//=> true
isIp.v4('1:2:3:4:5:6:7:8');
//=> false
API
isIp(input)
Check if input is IPv4 or IPv6.
isIp.v4(input)
Check if input is IPv4.
isIp.v6(input)
Check if input is IPv6.
Related
- ip-regex - Regular expression for matching IP addresses
License
MIT © Sindre Sorhus