Checkout transaction logs:
these lines of code are what enable a transaction to be sponsored
"arka_public_key" is a testnet public key
There are two modes to choose from while using paymaster (Check docs for more)
1.) sponsor - used in this example (This works by having Arka pay for the transaction fee, you can add more options to it like validUntil / validAfter). (Typically a project will get their own paymaster api key, deposit into the address)
2.) erc20 - This works by having the gas fee paid with whatever token is specified.
To check run:
npm i
And then
npm start