chore(jshint): apply jshint

.jshintrc

@@ -0,0 +1,56 @@
+{
+  "node": true,
+  "bitwise": true,
+  "camelcase": true,
+  "curly": true,
+  "eqeqeq": true,
+  "es3": true,
+  "forin": true,
+  "freeze": true,
+  "immed": true,
+  "indent": 4,
+  "latedef": "nofunc",
+  "newcap": true,
+  "noarg": true,
+  "noempty": true,
+  "nonbsp": true,
+  "nonew": true,
+  "plusplus": true,
+  "quotmark": "single",
+  "undef": true,
+  "unused": "vars",
+  "strict": true,
+  "trailing": true,
+  "maxparams": 3,
+  "maxdepth": 2,
+  "maxstatements": 8,
+  "maxcomplexity": 5,
+  "maxlen": 90,
+  "asi": false,
+  "boss": false,
+  "debug": false,
+  "eqnull": false,
+  "esnext": false,
+  "evil": false,
+  "expr": false,
+  "funcscope": false,
+  "gcl": false,
+  "globalstrict": false,
+  "iterator": false,
+  "lastsemic": false,
+  "laxbreak": false,
+  "laxcomma": false,
+  "loopfunc": false,
+  "maxerr": 50,
+  "moz": false,
+  "multistr": false,
+  "notypeof": false,
+  "proto": false,
+  "scripturl": false,
+  "smarttabs": false,
+  "shadow": false,
+  "sub": false,
+  "supernew": false,
+  "validthis": false,
+  "noyield": false
+}

index.js

@@ -10,7 +10,6 @@
  */
 'use strict';
 
-var fs = require('fs');
 var typeName = require('type-name');
 var through = require('through2');