Normalize require-calls for Browserify

lib/less/index.js

@@ -92,16 +92,34 @@ var less = {
     }
 };
 
-['color',      'directive',  'operation',          'dimension',
- 'keyword',    'variable',   'ruleset',            'element',
- 'selector',   'quoted',     'expression',         'rule',
- 'call',       'url',        'alpha',              'import',
- 'mixin',      'comment',    'anonymous',          'value',
- 'javascript', 'assignment', 'condition',          'paren',
- 'media',      'unicode-descriptor', 'negative',   'extend'
-].forEach(function (n) {
-    require('./tree/' + n);
-});
+require('./tree/color');
+require('./tree/directive');
+require('./tree/operation');
+require('./tree/dimension');
+require('./tree/keyword');
+require('./tree/variable');
+require('./tree/ruleset');
+require('./tree/element');
+require('./tree/selector');
+require('./tree/quoted');
+require('./tree/expression');
+require('./tree/rule');
+require('./tree/call');
+require('./tree/url');
+require('./tree/alpha');
+require('./tree/import');
+require('./tree/mixin');
+require('./tree/comment');
+require('./tree/anonymous');
+require('./tree/value');
+require('./tree/javascript');
+require('./tree/assignment');
+require('./tree/condition');
+require('./tree/paren');
+require('./tree/media');
+require('./tree/unicode-descriptor');
+require('./tree/negative');
+require('./tree/extend');
 
 
 var isUrlRe = /^(?:https?:)?\/\//i;