Get paraUSD Allowance

The getParabolUSDAllowance method allows you to check the amount of paraUSD tokens that a specific address (spender) is allowed to spend on behalf of the ParabolAccount owner. This is crucial for operations that require token approval, such as lending.

Usage

import { ParabolAccount, SupportedChainIds } from "@parabolfi/core";
 
async function checkParabolUSDAllowance() {
  const privateKey = "0x..."; // Your private key
  const chainId = SupportedChainIds.ZKSYNC;
 
  const account = await ParabolAccount.fromPrivateKey({
    privateKey,
    chainId,
  });
 
  const spender = "0x..."; // Address of the spender to check
 
  try {
    const allowance = await account.getParabolUSDAllowance(spender);
    console.log("paraUSD allowance:", allowance.toString());
  } catch (error) {
    console.error("Error checking paraUSD allowance:", error);
  }
}

Parameters

• spender: Address - The address of the spender to check the allowance for.

Returns

• Promise<bigint> - A promise that resolves to the allowance amount as a bigint in wei.

Important Notes

• The allowance is returned as a bigint, representing the amount in wei (smallest unit of paraUSD).
• This method involves a read operation on the blockchain and does not modify any state.
• The allowance represents the maximum amount the spender can transfer on behalf of the ParabolAccount owner.

Error Handling

This method may throw a ParabolSDKError if the read operation fails. Always wrap the call in a try-catch block to handle potential errors.

Use Cases

• Checking if sufficient allowance is set before performing operations that require token approval.
• Displaying the current allowance in a user interface.
• Determining if additional approval is needed before a transaction.