Wrap HBAR for WHBAR

🚨 Important Security Notice

DO NOT interact with the WHBAR contract directly.
DO NOT grant allowances to the WHBAR contract.
You MUST use the WhbarHelper contract instead.

WHBAR is not intended for direct use in other applications. Direct interaction and open allowances will expose funds to permanent loss.

Contract ID: WhbarHelper

Ensure that the WHBAR token ID is associated with the account prior to calling the deposit function. Failure to do so will result in a TOKEN_NOT_ASSOCIATED_TO_ACCOUNT error.

Function name: deposit

function deposit() public payable {
  IWHBAR(whbarContract).deposit{value: msg.value}(msg.sender, msg.sender);
}

Code overview

Recommended gas limit: 100,000

JavaScript SDK

Resources:

import {
  ContractExecuteTransaction,
  TokenAssociateTransaction,
  Hbar,
  HbarUnit
} from '@hashgraph/sdk';

//Client pre-checks:
// - WHBAR token is associated

const depositHbar = Hbar.from(depositAmount, HbarUnit.Hbar)

await new ContractExecuteTransaction()
 .setContractId(whbarHelperContractId)
 .setPayableAmount(depositHbar)
 .setGas(gasLim)
 .setFunction('deposit')
 .execute(client);

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