Highlighter support for JS globals.

lib/ace/mode/javascript_highlight_rules.js

@@ -46,12 +46,33 @@ var TextHighlightRules = require("ace/mode/text_highlight_rules").TextHighlightR
 
 var JavaScriptHighlightRules = function() {
 
+    // see: https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects
+    var globals = lang.arrayToMap(
+      // Constructors
+        ("Array|Boolean|Date|Function|Iterator|Number|Object|RegExp|String|Proxy|" +
+      // E4X
+         "Namespace|QName|XML|XMLList|" +
+         "ArrayBuffer|Float32Array|Float64Array|Int16Array|Int32Array|Int8Array|" +
+         "Uint16Array|Uint32Array|Uint8Array|Uint8ClampedArray|" +
+      // Errors
+        "Error|EvalError|InternalError|RangeError|ReferenceError|StopIteration|" +
+        "SyntaxError|TypeError|URIError|" +
+      //  Non-constructor functions
+        "decodeURI|decodeURIComponent|encodeURI|encodeURIComponent|eval|isFinite|" +
+        "isNaN|parseFloat|parseInt|" +
+      // Other
+        "JSON|Math|" +
+      // Pseudo
+        "this|arguments|prototype|window|document"
+      ).split("|")
+    );
+
     var keywords = lang.arrayToMap(
         ("break|case|catch|continue|default|delete|do|else|finally|for|function|" +
         "if|in|instanceof|new|return|switch|throw|try|typeof|let|var|while|with|" +
         "const|yield|import|get|set").split("|")
     );
-    
+
     // keywords which can be followed by regular expressions
     var kwBeforeRe = "case|do|else|finally|in|instanceof|return|throw|try|typeof|yield";
 
@@ -120,7 +141,7 @@ var JavaScriptHighlightRules = function() {
                 next : "regex_allowed"
             }, {
                 token : function(value) {
-                    if (value == "this")
+                    if (globals.hasOwnProperty(value))
                         return "variable.language";
                     else if (keywords.hasOwnProperty(value))
                         return "keyword";