ip-bigint

Convert IPv4 and IPv6 addresses to and from BigInt

Usage

import {parseIp, stringifyIp, normalizeIp} from "ip-bigint";

const obj = parseIp("2001:db8::");
// => {number: 42540766411282592856903984951653826560n, version: 6}

stringifyIp(obj);
// => "2001:db8::"

normalizeIp("2001:db8::0:0:1");
// => "2001:db8::1"

API

parseIp(ip)

Parse a IP address string to a object (with null prototype).

For IPv4 returns {number, version}. For IPv6 returns {number, version, [ipv4mapped], [scopeid]}.

There is only rudimentary validation that the passed string is actually an IP address. You are encouraged to validate yourself using modules like ip-regex.

stringifyIp({number, version, [ipv4mapped], [scopeid]}, [opts])

Convert a parsed object back to an IP address string.

opts: Options Object

• compress: Whether to compress the IP. For IPv6, this means the "best representation" all-lowercase shortest possible form. Default: true.
• hexify: Whether to convert IPv4-Mapped IPv6 addresses to hex. Default: false.

normalizeIp(ip, [opts])

Round-trip an IP address through parseIp and stringifyIp, effectively normalizing its representation.

opts: Options Object

• compress: Whether to compress the IP. For IPv6, this means the "best representation" all-lowercase shortest possible form. Default: true.
• hexify: Whether to convert IPv4-Mapped IPv6 addresses to hex. Default: false.

max4

A BigInt value that holds the biggest possible IPv4 address.

max6

A BigInt value that holds the biggest possible IPv6 address.

ipVersion(ip)

Returns a integer of the IP version, 4, 6 or 0 if it's not an IP. Very rudimentary and should not be used for validation.

Related

• ip-regex - Regular expression for matching IP addresses
• is-cidr - Check if a string is an IP address in CIDR notation
• is-ip - Check if a string is an IP address
• cidr-regex - Check if a string is an IP address in CIDR notation
• cidr-tools - Tools to work with IPv4 and IPv6 CIDR network lists

License

© silverwind, distributed under BSD licence