Arbitrum Transaction Fees

1export const name = 'Arbitrum Transaction Fees';
2export const version = '1.0.0';
3export const license = 'MIT';
4
5const ARB_GAS_PRECOMPILE = '0x000000000000000000000000000000000000006C';
6
7const ARB_GAS_ABI = [
8  'function getPricesInWei() external view returns (uint256,uint256,uint256,uint256,uint256,uint256)',
9];
10
11const ONE_ADDR = '0x0000000000000000000000000000000000000001';
12const BEEF_ADDR = '0xbeefbeefbeefbeefbeefbeefbeefbeefbeefbeef';
13const USDC_ADDR = '0xFF970A61A04b1cA14834A43f5dE4533eBDDB5CC8';
14const DAI_ADDR = '0xda10009cbd5d07dd0cecc66161fc93d7c9000da1';
15const UNISWAP_ROUTER = '0x68b3465833fb72a70ecdf485e0e4c7bd8665fc45';
16const USDC_HODLER = '0x3525f734fcE1a26a6CEffFca43538290DC239771';
17type TxType = 'EthTransfer' | 'ERC20Transfer' | 'ERC20Swap';
18
19const SEC_IN_DAY = 86400;
20
21export function setup(sdk: Context) {
22  const getFeeForCost = async (gasAmt: number) => {
23    const gasPrecompileContract = sdk.ethers.getContract(
24      ARB_GAS_PRECOMPILE,
25      ARB_GAS_ABI,
26      'arbitrum-one'
27    );
28    const weiPerArbGas = (await gasPrecompileContract.getPricesInWei())[5];
29
30    const ethPrice = await sdk.coinGecko.getCurrentPrice('ethereum');
31
32    return (weiPerArbGas * gasAmt * ethPrice) / 1e18;
33  };
34
35  const getGasAmount = async (txType: TxType): Promise<number> => {
36    const provider = sdk.ethers.getProvider('arbitrum-one');
37
38    if(txType === 'EthTransfer') {
39      return provider.estimateGas({
40        from: ONE_ADDR,
41        to: BEEF_ADDR,
42        value: '0x1',
43        data: '0x'
44      });
45    } else if(txType === 'ERC20Transfer') {
46      // transfer 1 usdc
47      return provider.estimateGas({
48        from: USDC_HODLER,
49        to: USDC_ADDR,
50        data: `0xa9059cbb000000000000000000000000${USDC_HODLER.substr(2)}0000000000000000000000000000000000000000000000000000000000000001`
51      });
52    } else { // txType === 'ERC20Swap'
53      // swap 9 usdc to at least 1 dai using Uniswap V3
54      return provider.estimateGas({
55        from: USDC_HODLER,
56        to: UNISWAP_ROUTER,
57        data: `0x04e45aaf000000000000000000000000${USDC_ADDR.substr(2)}000000000000000000000000${DAI_ADDR.substr(2)}00000000000000000000000000000000000000000000000000000000000001f4000000000000000000000000${USDC_HODLER.substr(2)}000000000000000000000000000000000000000000000000000000000000000900000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000`
58      });
59    }
60  };
61
62  const getAverageSwapFee = async (date: string) => {
63    const dayId = Math.floor(sdk.date.dateToTimestamp(date) / SEC_IN_DAY);
64
65    const query = `{
66      dayStat(id: "${dayId}") {
67        averageCostUSD
68      }
69      nextDay: dayStat(id: "${dayId + 1}") {
70        averageCostUSD
71      }
72    }`;
73
74    const result = await sdk.graph.query('dmihal/arbitrum-average-fees', query);
75
76    if (!result.dayStat) {
77      throw new Error('Data unavailable');
78    }
79    if (!result.nextDay) {
80      throw new Error('Day incomplete');
81    }
82    return parseFloat(result.dayStat.averageCostUSD);
83  }
84
85  sdk.register({
86    id: 'arbitrum-one',
87    queries: {
88      feeTransferEth: async () => getFeeForCost(await getGasAmount('EthTransfer')),
89      feeTransferERC20: async () => getFeeForCost(await getGasAmount('ERC20Transfer')),
90      feeTransferToken: async () => getFeeForCost(await getGasAmount('ERC20Transfer')),
91      feeSwap: async () => getFeeForCost(await getGasAmount('ERC20Swap')),
92      oneDayAverageFeeSwap: getAverageSwapFee,
93    },
94    metadata: {
95      icon: sdk.ipfs.getDataURILoader('QmeRunQGxv3haLoMfgwD2VjKwScf7gDQiA1DCYd1HNBCG6', 'image/svg+xml'),
96      category: 'l2',
97      name: 'Arbitrum One',
98      description: 'Arbitrum is an Optimistic Rollup that aims to feel exactly like interacting with Ethereum, but with transactions costing a fraction of what they do on L1.',
99      l2BeatSlug: 'arbitrum',
100      website: 'https://offchainlabs.com',
101      flags: {
102        throtle:
103          'Arbitrum One is throttled while in beta. Fees will decrease as this throttle is lifted.',
104      },
105    },
106  });
107}
108