sparrow-controllers
Version:
Collection of platform-agnostic modules for creating secure data models for cryptocurrency wallets
87 lines • 4.75 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
const GasFeeController_1 = require("./GasFeeController");
/**
* Obtains a set of max base and priority fee estimates along with time estimates so that we
* can present them to users when they are sending transactions or making swaps.
*
* @param args - The arguments.
* @param args.isEIP1559Compatible - Governs whether or not we can use an EIP-1559-only method to
* produce estimates.
* @param args.isLegacyGasAPICompatible - Governs whether or not we can use a non-EIP-1559 method to
* produce estimates (for instance, testnets do not support estimates altogether).
* @param args.fetchGasEstimates - A function that fetches gas estimates using an EIP-1559-specific
* API.
* @param args.fetchGasEstimatesUrl - The URL for the API we can use to obtain EIP-1559-specific
* estimates.
* @param args.fetchGasEstimatesViaEthFeeHistory - A function that fetches gas estimates using
* `eth_feeHistory` (an EIP-1559 feature).
* @param args.fetchLegacyGasPriceEstimates - A function that fetches gas estimates using an
* non-EIP-1559-specific API.
* @param args.fetchLegacyGasPriceEstimatesUrl - The URL for the API we can use to obtain
* non-EIP-1559-specific estimates.
* @param args.fetchEthGasPriceEstimate - A function that fetches gas estimates using
* `eth_gasPrice`.
* @param args.calculateTimeEstimate - A function that determine time estimate bounds.
* @param args.clientId - An identifier that an API can use to know who is asking for estimates.
* @param args.ethQuery - An EthQuery instance we can use to talk to Ethereum directly.
* @returns The gas fee calculations.
*/
function determineGasFeeCalculations({ isEIP1559Compatible, isLegacyGasAPICompatible, fetchGasEstimates, fetchGasEstimatesUrl, fetchGasEstimatesViaEthFeeHistory, fetchLegacyGasPriceEstimates, fetchLegacyGasPriceEstimatesUrl, fetchEthGasPriceEstimate, calculateTimeEstimate, clientId, ethQuery, }) {
return __awaiter(this, void 0, void 0, function* () {
try {
if (isEIP1559Compatible) {
let estimates;
try {
estimates = yield fetchGasEstimates(fetchGasEstimatesUrl, clientId);
}
catch (_a) {
estimates = yield fetchGasEstimatesViaEthFeeHistory(ethQuery);
}
const { suggestedMaxPriorityFeePerGas, suggestedMaxFeePerGas } = estimates.medium;
const estimatedGasFeeTimeBounds = calculateTimeEstimate(suggestedMaxPriorityFeePerGas, suggestedMaxFeePerGas, estimates);
return {
gasFeeEstimates: estimates,
estimatedGasFeeTimeBounds,
gasEstimateType: GasFeeController_1.GAS_ESTIMATE_TYPES.FEE_MARKET,
};
}
else if (isLegacyGasAPICompatible) {
const estimates = yield fetchLegacyGasPriceEstimates(fetchLegacyGasPriceEstimatesUrl, clientId);
return {
gasFeeEstimates: estimates,
estimatedGasFeeTimeBounds: {},
gasEstimateType: GasFeeController_1.GAS_ESTIMATE_TYPES.LEGACY,
};
}
throw new Error('Main gas fee/price estimation failed. Use fallback');
}
catch (_b) {
try {
const estimates = yield fetchEthGasPriceEstimate(ethQuery);
return {
gasFeeEstimates: estimates,
estimatedGasFeeTimeBounds: {},
gasEstimateType: GasFeeController_1.GAS_ESTIMATE_TYPES.ETH_GASPRICE,
};
}
catch (error) {
if (error instanceof Error) {
throw new Error(`Gas fee/price estimation failed. Message: ${error.message}`);
}
throw error;
}
}
});
}
exports.default = determineGasFeeCalculations;
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