From ca738f147009cd7eba327ac46acb63579aaa8aab Mon Sep 17 00:00:00 2001
From: "Samuel EF. Tinnerholm" <samuel.tinnerholm@gmail.com>
Date: Sun, 24 May 2026 20:24:31 +0300
Subject: [PATCH] fix: smarkets auth credential guards

Fixes #220
---
 core/src/exchanges/smarkets/auth.ts | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/core/src/exchanges/smarkets/auth.ts b/core/src/exchanges/smarkets/auth.ts
index 52ccef25..61dfddf4 100644
--- a/core/src/exchanges/smarkets/auth.ts
+++ b/core/src/exchanges/smarkets/auth.ts
@@ -46,14 +46,20 @@ export class SmarketsAuth {
      * Returns the username (email) used for session creation.
      */
     getUsername(): string {
-        return this.credentials.apiKey!;
+        if (!this.credentials.apiKey) {
+            throw new Error('[smarkets] apiKey (username) is required');
+        }
+        return this.credentials.apiKey;
     }
 
     /**
      * Returns the password used for session creation.
      */
     getPassword(): string {
-        return this.credentials.privateKey!;
+        if (!this.credentials.privateKey) {
+            throw new Error('[smarkets] privateKey (password) is required');
+        }
+        return this.credentials.privateKey;
     }
 
     /**