@etherspot/prime-sdk/dist/sdk/common/getGasFee.js

Etherspot Prime (Account Abstraction) SDK

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.getGasFee = void 0;
const ethers_1 = require("ethers");
const constants_1 = require("./constants");
async function getGasFee(provider) {
    try {
        const [fee, block] = await provider.send('eth_maxPriorityFeePerGas', []);
        if (ethers_1.BigNumber.from(0).eq(fee)) {
            throw new Error('failed to get priorityFeePerGas');
        }
        const tip = ethers_1.ethers.BigNumber.from(fee);
        const buffer = tip.div(100).mul(constants_1.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 provider.getGasPrice();
        return { maxFeePerGas: gas, maxPriorityFeePerGas: gas };
    }
}
exports.getGasFee = getGasFee;