remove null for rewind and use throw mechanism, should help with #273

Fix #275

Signed-off-by: DTrejo <[email protected]>

Author: JerrySievert

lib/parser/javascript.js

@@ -46,6 +46,11 @@ ReplyParser.prototype._parseResult = function (type) {
         // include the delimiter
         this._offset = end + 2;
 
+        if (end > this._buffer.length) {
+            this._offset = start;
+            throw new Error("too far");
+        }
+
         if (this.options.return_buffers) {
             return this._buffer.slice(start, end);
         } else {
@@ -63,6 +68,11 @@ ReplyParser.prototype._parseResult = function (type) {
         // include the delimiter
         this._offset = end + 2;
 
+        if (end > this._buffer.length) {
+            this._offset = start;
+            throw new Error("too far");
+        }
+
         // return the coerced numeric value
         return +small_toString(this._buffer, start, end);
     } else if (type === 36) { // $
@@ -85,7 +95,7 @@ ReplyParser.prototype._parseResult = function (type) {
 
         if (end > this._buffer.length) {
             this._offset = offset;
-            return null;
+            throw new Error("too far");
         }
 
         if (this.options.return_buffers) {