From 77bca156428e78dc97cc3eb22ee353086c034266 Mon Sep 17 00:00:00 2001
From: Jaco Greeff <jacogr@gmail.com>
Date: Wed, 27 Feb 2019 13:55:23 +0100
Subject: [PATCH] Update types.ts

---
 packages/chainspec/src/types.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/chainspec/src/types.ts b/packages/chainspec/src/types.ts
index c97dd3e1d..85d920df0 100644
--- a/packages/chainspec/src/types.ts
+++ b/packages/chainspec/src/types.ts
@@ -12,9 +12,9 @@ export type Chainspec = {
   },
   genesisRoot: string,
   name: string,
-  properties: {
+  properties: null | {
     [index: string]: any
   },
   protocolId: string | null,
-  telemetryUrl: string
+  telemetryUrl?: string 
 };