From abe7af3825830f38e559cb79ae20eb033d7a7d99 Mon Sep 17 00:00:00 2001
From: Federico Caselli <CaselIT@users.noreply.github.com>
Date: Mon, 4 Jul 2016 10:27:08 +0200
Subject: [PATCH] The subclasses property are now optional

---
 mathjs/mathjs.d.ts | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/mathjs/mathjs.d.ts b/mathjs/mathjs.d.ts
index 6311b5b7a7..9671dd8005 100644
--- a/mathjs/mathjs.d.ts
+++ b/mathjs/mathjs.d.ts
@@ -1333,14 +1333,15 @@ declare namespace mathjs {
 
 	export interface MathNode {
                 isNode: boolean;
-                isSymbolNode: boolean;
-                isConstantNode: boolean;
-                isOperatorNode: boolean;
-                op: string;
-                fn: string;
+                isSymbolNode?: boolean;
+                isConstantNode?: boolean;
+                isOperatorNode?: boolean;
+                op?: string;
+                fn?: string;
+                args?: MathNode[];
                 type: string;
-                name: string;
-                value: any;
+                name?: string;
+                value?: any;
 
                 compile(): EvalFunction;
                 eval(): any;