From 9368c096776fe313a654d3851fc98c55c346cd86 Mon Sep 17 00:00:00 2001
From: florian-bellotti <florian.bellotti@viacesi.fr>
Date: Fri, 31 May 2024 15:31:40 +0200
Subject: [PATCH] :sparkles: Adding allowance in IERC20

---
 src/interfaces/erc20.cairo | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/interfaces/erc20.cairo b/src/interfaces/erc20.cairo
index b6524a7..4fea319 100644
--- a/src/interfaces/erc20.cairo
+++ b/src/interfaces/erc20.cairo
@@ -3,6 +3,7 @@ use starknet::{ContractAddress};
 #[starknet::interface]
 pub trait IERC20<TStorage> {
     fn approve(ref self: TStorage, spender: ContractAddress, amount: u256);
+    fn allowance(self: @TState, owner: ContractAddress, spender: ContractAddress) -> u256;
     fn transferFrom(ref self: TStorage, from: ContractAddress, to: ContractAddress, amount: u256);
     fn transfer(ref self: TStorage, to: ContractAddress, amount: u256);
     fn balanceOf(self: @TStorage, account: ContractAddress) -> u256;