function isIPv4
isIPv4(input: string): booleanDeprecated
Returns true if input is an IPv4 address in dot-decimal notation with no
leading zeroes. Otherwise, returns false.
net.isIPv4('127.0.0.1'); // returns true
net.isIPv4('127.000.000.001'); // returns false
net.isIPv4('127.0.0.1/24'); // returns false
net.isIPv4('fhqwhgads'); // returns false
boolean