@drift-labs/common
Version:
Common functions for Drift
68 lines • 2.33 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.getHeliusPriorityFeeEstimate = exports.getPriorityFeeLevelFromPercentile = void 0;
const FEE_ENDPOINT = 'https://dlob.drift.trade/batchPriorityFees';
const getPriorityFeeLevelFromPercentile = (percentile) => {
if (percentile < 0 || percentile > 100) {
throw new Error('Percentile must be between 0 and 100');
}
if (percentile === 0) {
return 'min';
}
if (percentile <= 25) {
return 'low';
}
if (percentile <= 50) {
return 'medium';
}
if (percentile <= 75) {
return 'high';
}
if (percentile <= 95) {
return 'veryHigh';
}
return 'unsafeMax';
};
exports.getPriorityFeeLevelFromPercentile = getPriorityFeeLevelFromPercentile;
/**
* Helius fee buckets are as follows:
*
* none: 0th percentile
* low: 25th percentile
* medium: 50th percentile
* high: 75th percentile
* veryHigh: 95th percentile
* unsafeMax: 100th percentile
* default: 50th percentile
*/
const getHeliusPriorityFeeEstimate = async (marketIds, priorityFeeLevel = 'high') => {
try {
if (!(marketIds === null || marketIds === void 0 ? void 0 : marketIds.length)) {
return [];
}
const queryParamsMap = {
marketType: marketIds.map((market) => market.marketTypeStr).join(','),
marketIndex: marketIds.map((market) => market.marketIndex).join(','),
};
const queryParams = Object.entries(queryParamsMap)
.filter(([_key, param]) => param !== undefined)
.map(([key, param]) => {
return `${key}=${param}`;
});
const queryParamsString = `${queryParams.join('&')}`;
const response = await fetch(`${FEE_ENDPOINT}?${queryParamsString}`, {
headers: { 'Content-Type': 'application/json' },
});
const result = (await response.json());
if (!response.ok) {
return undefined;
}
const feeLevelValues = result.map((result) => result === null || result === void 0 ? void 0 : result[priorityFeeLevel]);
return feeLevelValues;
}
catch (e) {
return undefined;
}
};
exports.getHeliusPriorityFeeEstimate = getHeliusPriorityFeeEstimate;
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