@etherspot/modular-sdk/dist/esm/sdk/common/getGasFee.js

Etherspot Modular SDK - build with ERC-7579 smart accounts modules

import { BigNumber } from '../types/bignumber.js';
import { bufferPercent } from './constants.js';
export async function getGasFee(publicClient) {
    try {
        //const [fee, block] = await provider.send('eth_maxPriorityFeePerGas', []);
        const gasFeeResponse = await publicClient.request({
            method: 'eth_maxPriorityFeePerGas',
            params: [],
        });
        if (!gasFeeResponse) {
            throw new Error('failed to get priorityFeePerGas');
        }
        const [fee, block] = gasFeeResponse;
        if (BigNumber.from(0).eq(fee)) {
            throw new Error('failed to get priorityFeePerGas');
        }
        const tip = BigNumber.from(fee);
        const buffer = tip.div(100).mul(bufferPercent);
        const maxPriorityFeePerGas = tip.add(buffer);
        const maxFeePerGas = block.baseFeePerGas != null ? block.baseFeePerGas.mul(2).add(maxPriorityFeePerGas) : maxPriorityFeePerGas;
        return { maxFeePerGas, maxPriorityFeePerGas };
    }
    catch (err) {
        console.warn("getGas: eth_maxPriorityFeePerGas failed, falling back to legacy gas price.");
        const gas = await publicClient.getGasPrice();
        return { maxFeePerGas: gas, maxPriorityFeePerGas: gas };
    }
}
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