Execute all code in strict mode.

Author: realityking

Diff for: index.js

@@ -1,3 +1,5 @@
+'use strict';
+
 var precinct = require('precinct');
 var path = require('path');
 var fs = require('fs');

Diff for: lib/Config.js

@@ -1,3 +1,5 @@
+'use strict';
+
 var path = require('path');
 var debug = require('debug')('tree');
 

Diff for: webpack.config.js

@@ -1,8 +1,10 @@
+'use strict';
+
 module.exports = {
   entry: './index.js',
   resolve: {
     alias: {
       F: './node_modules/filing-cabinet'
     }
   }
-};
+};