remove unneeded constants

source/Ox/js/JavaScript.js

@@ -475,9 +475,15 @@ Ox.doc = (function() {
 
 /*@
 Ox.identify <f> Returns the type of a JavaScript identifier
-    (str) -> <s> Type
+    (string) -> <s> Type
         Type can be `constant`, `identifier`, `keyword`, `method`, `object` or
         `property`.
+    > Ox.identify('foo')
+    'identifier'
+    > Ox.identify('break')
+    'keyword'
+    > Ox.identify('window')
+    'object'
 @*/
 Ox.identify = (function() {
     // see https://developer.mozilla.org/en/JavaScript/Reference
@@ -488,6 +494,23 @@ Ox.identify = (function() {
             // Number
             'MAX_VALUE', 'MIN_VALUE', 'NEGATIVE_INFINITY', 'POSITIVE_INFINITY'
         ],
+        keyword: [
+            'break',
+            'case', 'catch', 'class', 'const', 'continue',
+            'debugger', 'default', 'delete', 'do',
+            'else', 'enum', 'export', 'extends',
+            'false', 'finally', 'for', 'function',
+            'if', 'implements', 'import', 'in', 'instanceof', 'interface',
+            'let', 'module',
+            'new', 'null',
+            'package', 'private', 'protected', 'public',
+            'return',
+            'super', 'switch', 'static',
+            'this', 'throw', 'true', 'try', 'typeof',
+            'var', 'void',
+            'yield',
+            'while', 'with'
+        ],
         method: [
             // Array
             'concat',
@@ -615,10 +638,11 @@ Ox.identify = (function() {
     };
     return function(identifier) {
         var ret;
-        if (Ox.KEYWORDS.indexOf(identifier) > -1) {
-            ret = 'keyword'
+        if (identifiers.keyword.indexOf(identifier) > -1) {
+            // fast track for keywords (used in Ox.tokenize)
+            ret = 'keyword';
         } else {
-            ret = 'identifier'
+            ret = 'identifier';
             Ox.forEach(identifiers, function(words, type) {
                 if (words.indexOf(identifier) > -1) {
                     ret = type;