From 78d7febede6724db16ffa96c9640cc4baa46ebe6 Mon Sep 17 00:00:00 2001
From: Fabio Berger <me@fabioberger.com>
Date: Fri, 2 Jun 2017 20:46:27 +0200
Subject: Be more specific with blockParam valid values

---
 src/types.ts | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/types.ts b/src/types.ts
index b5430a783..602c63859 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -193,9 +193,11 @@ export interface IndexFilterValues {
     [index: string]: any;
 }
 
+export type BlockParam = 'latest'|'earliest'|'pending'|number;
+
 export interface SubscriptionOpts {
-    fromBlock: string|number;
-    toBlock: string|number;
+    fromBlock: BlockParam;
+    toBlock: BlockParam;
 }
 
 export type DoneCallback = (err?: Error) => void;
-- 
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