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Refactor: optimize hostname getter function #6128

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15 changes: 5 additions & 10 deletions lib/request.js
Original file line number Diff line number Diff line change
Expand Up @@ -429,20 +429,15 @@ defineGetter(req, 'host', function host(){
* @api public
*/

defineGetter(req, 'hostname', function hostname(){
var host = this.host;

defineGetter(req, 'hostname', function hostname() {
const host = this.host;
if (!host) return;

// IPv6 literal support
var offset = host[0] === '['
? host.indexOf(']') + 1
: 0;
var index = host.indexOf(':', offset);
const offset = host.startsWith('[') ? host.indexOf(']') + 1 : 0;
const index = host.indexOf(':', offset);

return index !== -1
? host.substring(0, index)
: host;
return index !== -1 ? host.slice(0, index) : host;
});

/**
Expand Down