Hello, I created an adapter for Scroll transaction and swap fees. However I haven’t been able to publish it due to a couple of errors on the editor. Next, I’ll share the adapter code and the errors displayed.
/*
Scroll gas fees are a combination of "L2 execution fees" (on Scroll) and "L1 security fees" (on Ethereum):
totalFee = (l2GasPrice * l2GasUsed) + l1Fee
Where:
- `l2_gas_price` corresponds to the cost of execution on L2
- `l2_gas_used` corresponds to the amount of gas used on L2
- `l1Fee` corresponds to the data availibity and validity proof costs on L1
Visit our documentation for more information
https://docs.scroll.io/en/developers/guides/estimating-gas-and-tx-fees/
*/
export const name = 'Scroll Transaction Fees';
export const version = '0.0.1';
export const license = 'MIT';
export function setup(sdk: Context) {
const SCROLL_GAS_PREDEPLOY = '0x5300000000000000000000000000000000000002';
const SCROLL_GAS_ABI = [
{
inputs: [
{
internalType: 'bytes',
name: '_data',
type: 'bytes',
},
],
name: 'getL1Fee',
outputs: [
{
internalType: 'uint256',
name: '',
type: 'uint256',
},
],
stateMutability: 'view',
type: 'function',
},
];
sdk.ethers.addProvider("scroll", "https://sepolia-rpc.scroll.io/");
const provider = sdk.ethers.getProvider("scroll");
const gasPredeployContract = sdk.ethers.getContract(SCROLL_GAS_PREDEPLOY, SCROLL_GAS_ABI, "scroll");
const getTransferEthCost = async () => {
const l2GasPrice = await provider.getGasPrice();
const l2GasEstimate = await provider.estimateGas({
from: '0xb6F5414bAb8d5ad8F33E37591C02f7284E974FcB', // Address has enough ETH that this won't fail
to: '0xcafebeefcafebeefcafebeefcafebeefcafebeef',
value: '0x38d7ea4c68000', // 0.001 ETH
});
const l1GasCost = await gasPredeployContract.getL1Fee(
sdk.ethers.utils.serializeTransaction({
nonce: 1234,
value: '0x38d7ea4c68000', // 0.001 ETH
gasPrice: l2GasPrice,
gasLimit: l2GasEstimate,
to: '0xcafebeefcafebeefcafebeefcafebeefcafebeef',
data: '0x',
})
);
const totalGasCostWei = l2GasPrice.mul(l2GasEstimate).add(l1GasCost).toNumber();
const ethPrice = await sdk.defiLlama.getCurrentPrice('coingecko', 'ethereum');
return (totalGasCostWei * ethPrice) / 1e18;
};
const getTransferTokenCost = async () => {
const l2GasPrice = await provider.getGasPrice();
const l2GasEstimate = await provider.estimateGas({
from: '0xb6F5414bAb8d5ad8F33E37591C02f7284E974FcB', // Random account with USDT
to: '0x06eFdBFf2a14a7c8E15944D1F4A48F9F95F663A4', // USDT Contract
data:
'0xa9059cbb00000000000000000000000023e7039c34c7aa47a0d4e975fbc789e0f763fa640000000000000000000000000000000000000000000000000000000000000001',
});
const l1GasCost = await gasPredeployContract.getL1Fee(
sdk.ethers.utils.serializeTransaction({
nonce: 1234,
value: '0x',
gasPrice: l2GasPrice,
gasLimit: l2GasEstimate,
to: '0x06eFdBFf2a14a7c8E15944D1F4A48F9F95F663A4',
data:
'0xa9059cbb00000000000000000000000023e7039c34c7aa47a0d4e975fbc789e0f763fa640000000000000000000000000000000000000000000000000000000000000001',
})
);
const totalGasCostWei = l2GasPrice.mul(l2GasEstimate).add(l1GasCost).toNumber();
const ethPrice = await sdk.defiLlama.getCurrentPrice('coingecko', 'ethereum');
return (totalGasCostWei * ethPrice) / 1e18;
};
const getSwapCost = async () => {
const l2GasPrice = await provider.getGasPrice();
const l2GasEstimate = await provider.estimateGas({
from: '0xb6F5414bAb8d5ad8F33E37591C02f7284E974FcB', // Random account with USDT
to: '0xfc30937f5cDe93Df8d48aCAF7e6f5D8D8A31F636', // Uniswap Router
data:
'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',
});
const l1GasCost = await gasPredeployContract.getL1Fee(
sdk.ethers.utils.serializeTransaction({
nonce: 1234,
value: '0x',
gasPrice: l2GasPrice,
gasLimit: l2GasEstimate,
to: '0xfc30937f5cDe93Df8d48aCAF7e6f5D8D8A31F636',
data:
'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',
})
);
const totalGasCostWei = l2GasPrice.mul(l2GasEstimate).add(l1GasCost).toNumber();
const ethPrice = await sdk.defiLlama.getCurrentPrice('coingecko', 'ethereum');
return (totalGasCostWei * ethPrice) / 1e18;
};
sdk.register({
id: 'scroll',
queries: {
feeTransferEth: getTransferEthCost,
feeTransferERC20: getTransferTokenCost,
feeSwap: getSwapCost,
},
metadata: {
icon: sdk.ipfs.getDataURILoader(
'QmVXqYsugNvfTZbJDHYeVZCLARqSoNujMBVKMbToe8tu9m',
'image/svg+xml'
),
category: 'l2',
name: 'Scroll',
description:
'Scroll is scaling Ethereum through zero knowledge tech and EVM compatibility.',
l2BeatSlug: 'scroll',
website: 'https://scroll.io',
},
});
}
Now I’ll share some error screenshots. Sometimes the editor displays error on the terminal and sometimes I just quet stuck loading forever.
(Uploaded the images on ipfs because I can’t post media because I’m a new user)
Can someone help me out publishing my adapter?
Thanks and have a good day!