Check DEX Contract Token Balance for Swap Execution

[Akshola00]

Goal

Implement a function that verifies if the DEX contract holds enough of the output token to complete the swap after calculating the amount required.

Requirements

• This function should:
  • Accept the contract address of the output ERC-20 token and the amountOut calculated in the previous step.
  • Obtain an instance of the specified ERC-20 token contract.
  • Check if the DEX contract’s balance of tokenOut is sufficient to fulfill the swap.