Refactor index

lib/index.js

@@ -1,14 +1,16 @@
-var assign = require('./util/assign')
+'use strict'
 
-var fse = {}
-var gfs = require('graceful-fs')
+const assign = require('./util/assign')
+
+const fse = {}
+const gfs = require('graceful-fs')
 
 // attach fs methods to fse
-Object.keys(gfs).forEach(function (key) {
+Object.keys(gfs).forEach(key => {
   fse[key] = gfs[key]
 })
 
-var fs = fse
+const fs = fse
 
 assign(fs, require('./copy'))
 assign(fs, require('./copy-sync'))
@@ -23,12 +25,10 @@ assign(fs, require('./output'))
 module.exports = fs
 
 // maintain backwards compatibility for awhile
-var jsonfile = {}
+const jsonfile = {}
 Object.defineProperty(jsonfile, 'spaces', {
-  get: function () {
-    return fs.spaces // found in ./json
-  },
-  set: function (val) {
+  get: () => fs.spaces, // found in ./json
+  set: val => {
     fs.spaces = val
   }
 })