run stardard code style

Author: grindcode

benchmark.js

@@ -1,5 +1,5 @@
 var Benchmark = require('benchmark')
-var Suite = new Benchmark.Suite
+var Suite = new Benchmark.Suite()
 var insert = require('./index.js')
 
 var testString = 'abcdefg'

index.js

@@ -6,14 +6,15 @@
  * @returns {Array|String} New modified value depending on `input` type.
  */
 module.exports = function (input, value, index) {
-  var isStringInput = typeof input === 'string'
-  if (!isStringInput && !Array.isArray(input))
+  const isStringInput = typeof input === 'string'
+  if (!isStringInput && !Array.isArray(input)) {
     throw new TypeError('First argument invalid. Expected Array or String.')
-  if (typeof index !== 'undefined' && typeof index !== 'number')
+  }
+  if (typeof index !== 'undefined' && typeof index !== 'number') {
     throw new TypeError('Third argument invalid. Expected Number.')
-  // Avoid negative index offset
-  var beacon = index || 0
+  }
+  const beacon = index || 0
   // concat([value]) is faster than concat(value) for String, Number and Object
-  var insert = (Array.isArray(value) || isStringInput)? value: [value]
+  const insert = (Array.isArray(value) || isStringInput) ? value : [value]
   return input.slice(0, beacon).concat(insert).concat(input.slice(beacon))
 }