1 files changed, 8 insertions, 8 deletions
diff --git a/lib/https.js b/lib/https.js
index acbbe0b6c2..4ee15b2537 100644
--- a/lib/https.js
+++ b/lib/https.js
@@ -4,7 +4,7 @@ const tls = require('tls');
 const url = require('url');
 const http = require('http');
 const util = require('util');
-const inherits = require('util').inherits;
+const inherits = util.inherits;
 const debug = util.debuglog('https');
 
 function Server(opts, requestListener) {
@@ -41,21 +41,21 @@ exports.createServer = function(opts, requestListener) {
 // HTTPS agents.
 
 function createConnection(port, host, options) {
-  if (util.isObject(port)) {
+  if (port !== null && typeof port === 'object') {
     options = port;
-  } else if (util.isObject(host)) {
+  } else if (host !== null && typeof host === 'object') {
     options = host;
-  } else if (util.isObject(options)) {
+  } else if (options !== null && typeof options === 'object') {
     options = options;
   } else {
     options = {};
   }
 
-  if (util.isNumber(port)) {
+  if (typeof port === 'number') {
     options.port = port;
   }
 
-  if (util.isString(host)) {
+  if (typeof host === 'string') {
     options.host = host;
   }
 
@@ -96,7 +96,7 @@ Agent.prototype.getName = function(options) {
     name += options.pfx;
 
   name += ':';
-  if (!util.isUndefined(options.rejectUnauthorized))
+  if (options.rejectUnauthorized !== undefined)
     name += options.rejectUnauthorized;
 
   return name;
@@ -108,7 +108,7 @@ exports.globalAgent = globalAgent;
 exports.Agent = Agent;
 
 exports.request = function(options, cb) {
-  if (util.isString(options)) {
+  if (typeof options === 'string') {
     options = url.parse(options);
   } else {
     options = util._extend({}, options);