@kaiachain/web3js-ext
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web3.js extension for kaiachain blockchain
69 lines (65 loc) • 3.19 kB
JavaScript
/*
This file is part of web3.js.
web3.js is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
web3.js is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with web3.js. If not, see <http://www.gnu.org/licenses/>.
*/
// Taken from https://github.com/web3/web3.js/blob/v4.3.0/packages/web3-eth/src/utils/get_transaction_gas_pricing.ts
import { Eip1559NotSupportedError, UnsupportedTransactionTypeError } from "web3-errors";
import { getBlock, getGasPrice } from "web3-eth";
import { format } from "web3-utils";
import { isNullish } from "web3-validator";
import { getTransactionType } from "./transaction_builder.js";
async function getEip1559GasPricing(transaction, web3Context, returnFormat) {
const block = await getBlock(web3Context, web3Context.defaultBlock, false, returnFormat);
if (isNullish(block.baseFeePerGas)) {
throw new Eip1559NotSupportedError();
}
if (!isNullish(transaction.gasPrice)) {
const convertedTransactionGasPrice = format({ format: "uint" }, transaction.gasPrice, returnFormat);
return {
maxPriorityFeePerGas: convertedTransactionGasPrice,
maxFeePerGas: convertedTransactionGasPrice,
};
}
return {
maxPriorityFeePerGas: format({ format: "uint" }, transaction.maxPriorityFeePerGas ?? web3Context.defaultMaxPriorityFeePerGas, returnFormat),
maxFeePerGas: format({ format: "uint" }, (transaction.maxFeePerGas ??
BigInt(block.baseFeePerGas) * BigInt(2) +
BigInt(transaction.maxPriorityFeePerGas ?? web3Context.defaultMaxPriorityFeePerGas)), returnFormat),
};
}
export async function getTransactionGasPricing(transaction, web3Context, returnFormat) {
const transactionType = getTransactionType(transaction, web3Context);
if (!isNullish(transactionType)) {
if (transactionType.startsWith("-")) {
throw new UnsupportedTransactionTypeError(transactionType);
}
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-2718.md#transactions
if (Number(transactionType) < 0 || Number(transactionType) > 127) {
throw new UnsupportedTransactionTypeError(transactionType);
}
if (isNullish(transaction.gasPrice) &&
(transactionType === "0x0" || transactionType === "0x1")) {
return {
gasPrice: await getGasPrice(web3Context, returnFormat),
maxPriorityFeePerGas: undefined,
maxFeePerGas: undefined,
};
}
if (transactionType === "0x2") {
return {
gasPrice: undefined,
...(await getEip1559GasPricing(transaction, web3Context, returnFormat)),
};
}
}
return undefined;
}