From 0aabade166be563753bed3bb9ffb64f8a02e0ee8 Mon Sep 17 00:00:00 2001
From: Fabio Berger <me@fabioberger.com>
Date: Fri, 26 May 2017 17:49:16 +0200
Subject: return undefined if not address found

---
 src/ts/web3_wrapper.ts | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'src/ts/web3_wrapper.ts')

diff --git a/src/ts/web3_wrapper.ts b/src/ts/web3_wrapper.ts
index 969c2c040..2f082c9ac 100644
--- a/src/ts/web3_wrapper.ts
+++ b/src/ts/web3_wrapper.ts
@@ -12,7 +12,7 @@ export class Web3Wrapper {
     public isAddress(address: string): boolean {
         return this.web3.isAddress(address);
     }
-    public async getSenderAddressIfExistsAsync(): Promise<string> {
+    public async getSenderAddressIfExistsAsync(): Promise<string|undefined> {
         const defaultAccount = this.web3.eth.defaultAccount;
         if (!_.isUndefined(defaultAccount)) {
             return defaultAccount;
@@ -20,10 +20,10 @@ export class Web3Wrapper {
         const firstAccount = await this.getFirstAddressIfExistsAsync();
         return firstAccount;
     }
-    public async getFirstAddressIfExistsAsync(): Promise<string> {
+    public async getFirstAddressIfExistsAsync(): Promise<string|undefined> {
         const addresses = await promisify(this.web3.eth.getAccounts)();
         if (_.isEmpty(addresses)) {
-            return '';
+            return undefined;
         }
         return (addresses as string[])[0];
     }
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