style: use const everywhere

darwin.js

@@ -2,8 +2,8 @@
 const execSync = require('child_process').execSync;
 
 module.exports = () => {
-  let output = execSync('sysctl -n kern.boottime').toString(),
-    date = output.replace(/{[ ,=\w]+} /g, '').trim();
+  const output = execSync('sysctl -n kern.boottime').toString();
+  const date = output.replace(/{[ ,=\w]+} /g, '').trim();
 
   return new Date(date);
 };

darwin.spec.js

@@ -4,7 +4,7 @@ const assert = require('assert');
 
 describe('darwin', () => {
   it('should parse the date', () => {
-    let darwin = proxyquire('./darwin', {
+    const darwin = proxyquire('./darwin', {
       'child_process': {
         execSync: (cmd) => {
           assert.equal(cmd, 'sysctl -n kern.boottime', 'should call sysctl command');

index.spec.js

@@ -16,7 +16,7 @@ describe('index', function () {
     });
 
     it('should require darwin', function () {
-      let uptime = proxyquire('./index', {
+      const uptime = proxyquire('./index', {
         './darwin': {
           type: 'darwin'
         },
@@ -38,7 +38,7 @@ describe('index', function () {
     });
 
     it('should require linux', function () {
-      let uptime = proxyquire('./index', {
+      const uptime = proxyquire('./index', {
         './darwin': {
           type: 'darwin'
         },
@@ -60,7 +60,7 @@ describe('index', function () {
     });
 
     it('should require win32', function () {
-      let uptime = proxyquire('./index', {
+      const uptime = proxyquire('./index', {
         './darwin': {
           type: 'darwin'
         },

linux.js

@@ -2,7 +2,7 @@
 const execSync = require('child_process').execSync;
 
 module.exports = () => {
-  let output = execSync('uptime -s').toString();
+  const output = execSync('uptime -s').toString();
 
   return new Date(output);
 };

linux.spec.js

@@ -4,7 +4,7 @@ const assert = require('assert');
 
 describe('linux', () => {
   it('should parse the date', () => {
-    let linux = proxyquire('./linux', {
+    const linux = proxyquire('./linux', {
       'child_process': {
         execSync: (cmd) => {
           assert.equal(cmd, 'uptime -s', 'should call uptime command');

win32.js

@@ -2,11 +2,11 @@
 const execSync = require('child_process').execSync;
 
 module.exports = () => {
-  let output = execSync('net statistics workstation').toString(),
-    date = output.match(/((\d{2}\.){2}\d{4}){1} ((\d{2}:){2}\d{2}){1}/gm),
-    split = date[0].split(' '),
-    format = split[0].split('.'),
-    formatedDate = `${format[1]}-${format[0]}-${format[2]} ${split[1]}`;
+  const output = execSync('net statistics workstation').toString();
+  const date = output.match(/((\d{2}\.){2}\d{4}){1} ((\d{2}:){2}\d{2}){1}/gm);
+  const split = date[0].split(' ');
+  const format = split[0].split('.');
+  const formatedDate = `${format[1]}-${format[0]}-${format[2]} ${split[1]}`;
 
   return new Date(formatedDate);
 };

win32.spec.js

@@ -4,7 +4,7 @@ const assert = require('assert');
 
 describe('win32', () => {
   it('should parse the date', () => {
-    let win32 = proxyquire('./win32', {
+    const win32 = proxyquire('./win32', {
       'child_process': {
         execSync: (cmd) => {
           assert.equal(cmd, 'net statistics workstation', 'should call net statistics workstation command');