From 8ce2b87e87dd72067105fe0f8f558b131b061522 Mon Sep 17 00:00:00 2001
From: Jaco Greeff <jacogr@gmail.com>
Date: Tue, 14 Aug 2018 14:07:28 +0200
Subject: [PATCH] null/undefined checks for boolean

---
 packages/type-params/src/decode/value/bool.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/packages/type-params/src/decode/value/bool.ts b/packages/type-params/src/decode/value/bool.ts
index f000832368..7a694faec3 100644
--- a/packages/type-params/src/decode/value/bool.ts
+++ b/packages/type-params/src/decode/value/bool.ts
@@ -4,8 +4,11 @@
 
 import { Param$Decoded } from '../../types';
 
+import isNull from '@polkadot/util/is/null';
+import isUndefined from '@polkadot/util/is/undefined';
+
 export default function bool (input: Uint8Array | null | undefined): Param$Decoded {
-  if (!input) {
+  if (isUndefined(input) || isNull(input)) {
     return {
       length: 0,
       value: false