bitcore-node
Version:
A blockchain indexing node with extended capabilities using bitcore
69 lines • 3.15 kB
JavaScript
;
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Object.defineProperty(exports, "__esModule", { value: true });
exports.BTCStateProvider = void 0;
const cache_1 = require("../../../models/cache");
const FeeProviders = __importStar(require("../../fee"));
const internal_1 = require("../internal/internal");
class BTCStateProvider extends internal_1.InternalStateProvider {
constructor(chain = 'BTC') {
super(chain);
}
async getFee(params) {
const { chain, network, target, mode } = params;
const cacheKey = `getFee-${chain}-${network}-${target}${mode ? '-' + mode.toLowerCase() : ''}`;
return cache_1.CacheStorage.getGlobalOrRefresh(cacheKey, async () => {
const rpcEstimate = await this.getRPC(chain, network).getEstimateSmartFee(Number(target), mode);
let estimates = (await Promise.allSettled([
FeeProviders.BlockCypher.getFee(network, target),
FeeProviders.MempoolSpace.getFee(network, target),
FeeProviders.Bitgo.getFee(network, target),
])
.then(results => results.filter(result => result.status === 'fulfilled')))
.map(result => result.value);
// NOTE: rpcEstimate is in BTC per kilobyte, estimates is in sats per byte
let feerate = rpcEstimate.feerate * 1e5; // convert to sats per byte
feerate = feerate + estimates.reduce((acc, v) => acc += v, 0);
feerate = Math.ceil(feerate / (estimates.length + 1));
feerate = Number((feerate / 1e5).toFixed(8)); // convert to BTC per KB
return {
feerate,
blocks: target,
};
}, 5 * cache_1.CacheStorage.Times.Minute);
}
}
exports.BTCStateProvider = BTCStateProvider;
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