From cb026e9448a06de5feecb81fda35be39729ff22b Mon Sep 17 00:00:00 2001
From: Kuba Juszczyk <juszczykjakub@gmail.com>
Date: Thu, 11 Jul 2019 22:16:02 +0200
Subject: [PATCH] Optimize

---
 benchmark/index.js | 13 +++++++++++++
 index.js           |  5 +++--
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/benchmark/index.js b/benchmark/index.js
index a2f4b9e..26a1491 100644
--- a/benchmark/index.js
+++ b/benchmark/index.js
@@ -37,18 +37,21 @@ function run(fn, prop = 'all') {
 }
 
 bench('all')
+  .add('v6.2', () => run(isNumber62))
   .add('v6.1', () => run(isNumber61))
   .add('v6.0', () => run(isNumber60))
   .add('parseFloat', () => run(isNumberParseFloat))
   .run()
 
 bench('string')
+  .add('v6.2', () => run(isNumber62, 'string'))
   .add('v6.1', () => run(isNumber61, 'string'))
   .add('v6.0', () => run(isNumber60, 'string'))
   .add('parseFloat', () => run(isNumberParseFloat, 'string'))
   .run()
 
 bench('number')
+  .add('v6.2', () => run(isNumber62, 'number'))
   .add('v6.1', () => run(isNumber61, 'number'))
   .add('v6.0', () => run(isNumber60, 'number'))
   .add('parseFloat', () => run(isNumberParseFloat, 'number'))
@@ -90,3 +93,13 @@ function isNumber61(val) {
   return false;
 }
 
+function isNumber62(val) {
+  var type = typeof num;
+  if (type === 'number') {
+    return num - num === 0;
+  }
+  if (type === 'string' && num.trim() !== '') {
+    return Number.isFinite ? Number.isFinite(+num) : isFinite(+num);
+  }
+  return false;
+}
diff --git a/index.js b/index.js
index 27f19b7..cba4acf 100644
--- a/index.js
+++ b/index.js
@@ -8,10 +8,11 @@
 'use strict';
 
 module.exports = function(num) {
-  if (typeof num === 'number') {
+  var type = typeof num;
+  if (type === 'number') {
     return num - num === 0;
   }
-  if (typeof num === 'string' && num.trim() !== '') {
+  if (type === 'string' && num.trim() !== '') {
     return Number.isFinite ? Number.isFinite(+num) : isFinite(+num);
   }
   return false;