From 81348c60de2ba1060f647a5755b9d1c52849ace3 Mon Sep 17 00:00:00 2001
From: Jaco Greeff <jacogr@gmail.com>
Date: Thu, 4 Oct 2018 12:15:01 +0200
Subject: [PATCH] Small fixes in operation (#200)

* Small fixes in operation

* Move length encoding to Extrinsic
---
 packages/api-observable/src/Base.ts | 2 +-
 packages/types/src/Extrinsic.ts     | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/packages/api-observable/src/Base.ts b/packages/api-observable/src/Base.ts
index 0c000539cd..048bd54e11 100644
--- a/packages/api-observable/src/Base.ts
+++ b/packages/api-observable/src/Base.ts
@@ -52,7 +52,7 @@ export default class ApiBase {
         try {
           const meta = await this._api.state.getMetadata().toPromise();
 
-          this._genesisHash = await this._api.state.getBlockHash(0).toPromise();
+          this._genesisHash = await this._api.chain.getBlockHash(0).toPromise();
           ApiBase.extrinsics = extrinsicsFromMeta(meta);
           ApiBase.storage = storageFromMeta(meta);
 
diff --git a/packages/types/src/Extrinsic.ts b/packages/types/src/Extrinsic.ts
index 3548d48638..d4908ce2d9 100644
--- a/packages/types/src/Extrinsic.ts
+++ b/packages/types/src/Extrinsic.ts
@@ -2,6 +2,7 @@
 // This software may be modified and distributed under the terms
 // of the ISC license. See the LICENSE file for details.
 
+import u8aToHex from '@polkadot/util/u8a/toHex';
 import blake2Asu8a from '@polkadot/util-crypto/blake2/asU8a';
 
 import Bytes from './Bytes';
@@ -18,4 +19,12 @@ export default class Extrinsic extends Bytes {
       blake2Asu8a(this.toU8a(), 256)
     );
   }
+
+  toHex (): string {
+    return u8aToHex(this.toU8a());
+  }
+
+  toJSON (): any {
+    return this.toHex();
+  }
 }