Move detect to a static class property

Author: jseminck

lib/util/Components.js

@@ -20,6 +20,11 @@ class Components {
     this._list = {};
   }
 
+  static detect(rule) {
+    return componentRule.bind(this, rule); // eslint-disable-line no-use-before-define
+  }
+
+
   _getId(node) {
     return node && node.range.join(':');
   }
@@ -656,8 +661,4 @@ function componentRule(rule, context) {
   return updatedRuleInstructions;
 }
 
-Components.detect = function(rule) {
-  return componentRule.bind(this, rule);
-};
-
 module.exports = Components;