PHP's ip2long in JavaScript

module.exports = functionip2long (argIP) {
//  discuss at: https://locutus.io/php/ip2long/
// original by: Waldo Malqui Silva (https://waldo.malqui.info)
// improved by: Victor
//  revised by: fearphage (https://my.opera.com/fearphage/)
//  revised by: Theriault (https://github.com/Theriault)
//    estarget: es2015
//   example 1: ip2long('192.0.34.166')
//   returns 1: 3221234342
//   example 2: ip2long('0.0xABCDEF')
//   returns 2: 11259375
//   example 3: ip2long('255.255.255.256')
//   returns 3: false
let i = 0
// PHP allows decimal, octal, and hexadecimal IP components.
// PHP allows between 1 (e.g. 127) to 4 (e.g 127.0.0.1) components.
const pattern = newRegExp([
'^([1-9]\\d*|0[0-7]*|0x[\\da-f]+)',
'(?:\\.([1-9]\\d*|0[0-7]*|0x[\\da-f]+))?',
'(?:\\.([1-9]\\d*|0[0-7]*|0x[\\da-f]+))?',
'(?:\\.([1-9]\\d*|0[0-7]*|0x[\\da-f]+))?$'
  ].join(''), 'i')
  argIP = argIP.match(pattern) // Verify argIP format.
if (!argIP) {
// Invalid format.
returnfalse
  }
// Reuse argIP variable for component counter.
  argIP[0] = 0
for (i = 1; i < 5; i += 1) {
    argIP[0] += !!((argIP[i] || '').length)
    argIP[i] = parseInt(argIP[i]) || 0
  }
// Continue to use argIP for overflow values.
// PHP does not allow any component to overflow.
  argIP.push(256, 256, 256, 256)
// Recalculate overflow of last component supplied to make up for missing components.
  argIP[4 + argIP[0]] *= Math.pow(256, 4 - argIP[0])
if (argIP[1] >= argIP[5] ||
    argIP[2] >= argIP[6] ||
    argIP[3] >= argIP[7] ||
    argIP[4] >= argIP[8]) {
returnfalse
  }
return argIP[1] * (argIP[0] === 1 || 16777216) +
    argIP[2] * (argIP[0] <= 2 || 65536) +
    argIP[3] * (argIP[0] <= 3 || 256) +
    argIP[4] * 1
}