Convert IP addresses to integers in javascript, similar to MySQL INET_NTOA and INET_ATON

ip_address_and_integer_mapping.js

// An earlier version did not work when the first part of the IP address was greater than 127.  (e.g. '192.168.0.1')
// JS uses signed integers for bitshifting operations, which broke 
// The issue is fixed now, but I really don't like my code.
// Maybe use this instead: https://gist.github.com/nethoncho/53b3b7e4dfe68a4de34f

const inet_ntoa = n => [3,2,1,0].map(i => ((n & (255 << (8 * i))) >>> 0) / Math.pow(256, i)).join('.')
const inet_aton = ip => ip.split('.', 4).map(Number).map((byte, i) => byte << (8 * (3 - i))).reduce((a, b) => a + b) >>> 0

inet_aton('10.0.5.9') // => 167773449
inet_ntoa(167773449) // => '10.0.5.9'
inet_aton('192.168.0.1') // => 3232235521
inet_ntoa(3232235521) // '192.168.0.1'
inet_ntoa(inet_aton('0.255.0.128')) // => '0.255.0.128'
inet_ntoa(inet_aton('3.255.47.128')) // => '3.255.47.128'