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v1.x
lib/helpers/speedometer.js
55 строк
1 KB
Jay
feat: implement prettier and fix all issues (#7385)
14 фев 2026, 17:59
Не верифицирован
14 фев 2026, 17:59
ef3711d
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'use strict'; /** * Calculate data maxRate * @param {Number} [samplesCount= 10] * @param {Number} [min= 1000] * @returns {Function} */ function speedometer(samplesCount, min) { samplesCount = samplesCount || 10; const bytes = new Array(samplesCount); const timestamps = new Array(samplesCount); let head = 0; let tail = 0; let firstSampleTS; min = min !== undefined ? min : 1000; return function push(chunkLength) { const now = Date.now(); const startedAt = timestamps[tail]; if (!firstSampleTS) { firstSampleTS = now; } bytes[head] = chunkLength; timestamps[head] = now; let i = tail; let bytesCount = 0; while (i !== head) { bytesCount += bytes[i++]; i = i % samplesCount; } head = (head + 1) % samplesCount; if (head === tail) { tail = (tail + 1) % samplesCount; } if (now - firstSampleTS < min) { return; } const passed = startedAt && now - startedAt; return passed ? Math.round((bytesCount * 1000) / passed) : undefined; }; } export default speedometer;