Update token.js

ArweaveTeam · Jun 1, 2021 · 788a974 · 788a974
1 parent 7cbe555
commit 788a974
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/examples/token.js b/examples/token.js
@@ -24,6 +24,10 @@ export function handle (state, action) {
     if (qty <= 0 || caller === target) {
       throw new ContractError('Invalid token transfer')
     }
+
+    if (!(caller in balances)) {
+      throw new ContractError("Caller doesn't have a balance.");
+    }
 
     if (balances[caller] < qty) {
       throw new ContractError(`Caller balance not high enough to send ${qty} token(s)!`)