viem
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50 lines • 2.35 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.estimateMaxPriorityFeePerGas = estimateMaxPriorityFeePerGas;
exports.internal_estimateMaxPriorityFeePerGas = internal_estimateMaxPriorityFeePerGas;
const fee_js_1 = require("../../errors/fee.js");
const fromHex_js_1 = require("../../utils/encoding/fromHex.js");
const getAction_js_1 = require("../../utils/getAction.js");
const getBlock_js_1 = require("./getBlock.js");
const getGasPrice_js_1 = require("./getGasPrice.js");
async function estimateMaxPriorityFeePerGas(client, args) {
return internal_estimateMaxPriorityFeePerGas(client, args);
}
async function internal_estimateMaxPriorityFeePerGas(client, args) {
const { block: block_, chain = client.chain, request } = args || {};
try {
const maxPriorityFeePerGas = chain?.fees?.maxPriorityFeePerGas ?? chain?.fees?.defaultPriorityFee;
if (typeof maxPriorityFeePerGas === 'function') {
const block = block_ || (await (0, getAction_js_1.getAction)(client, getBlock_js_1.getBlock, 'getBlock')({}));
const maxPriorityFeePerGas_ = await maxPriorityFeePerGas({
block,
client,
request,
});
if (maxPriorityFeePerGas_ === null)
throw new Error();
return maxPriorityFeePerGas_;
}
if (typeof maxPriorityFeePerGas !== 'undefined')
return maxPriorityFeePerGas;
const maxPriorityFeePerGasHex = await client.request({
method: 'eth_maxPriorityFeePerGas',
});
return (0, fromHex_js_1.hexToBigInt)(maxPriorityFeePerGasHex);
}
catch {
const [block, gasPrice] = await Promise.all([
block_
? Promise.resolve(block_)
: (0, getAction_js_1.getAction)(client, getBlock_js_1.getBlock, 'getBlock')({}),
(0, getAction_js_1.getAction)(client, getGasPrice_js_1.getGasPrice, 'getGasPrice')({}),
]);
if (typeof block.baseFeePerGas !== 'bigint')
throw new fee_js_1.Eip1559FeesNotSupportedError();
const maxPriorityFeePerGas = gasPrice - block.baseFeePerGas;
if (maxPriorityFeePerGas < 0n)
return 0n;
return maxPriorityFeePerGas;
}
}
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