node_modules/ip-address/src/v4/constants.ts

export const BITS = 32;
export const GROUPS = 4;

export const RE_ADDRESS =
  /^(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/g;

export const RE_SUBNET_STRING = /\/\d{1,2}$/;