@pushrocks/smartnetwork/dist_ts/helpers/stats.js

network diagnostics

export function average(values) {
    let total = 0;
    for (let i = 0; i < values.length; i += 1) {
        total += values[i];
    }
    return total / values.length;
}
export function median(values) {
    const half = Math.floor(values.length / 2);
    values.sort((a, b) => a - b);
    if (values.length % 2)
        return values[half];
    return (values[half - 1] + values[half]) / 2;
}
export function quartile(values, percentile) {
    values.sort((a, b) => a - b);
    const pos = (values.length - 1) * percentile;
    const base = Math.floor(pos);
    const rest = pos - base;
    if (values[base + 1] !== undefined) {
        return values[base] + rest * (values[base + 1] - values[base]);
    }
    return values[base];
}
export function jitter(values) {
    // Average distance between consecutive latency measurements...
    let jitters = [];
    for (let i = 0; i < values.length - 1; i += 1) {
        jitters.push(Math.abs(values[i] - values[i + 1]));
    }
    return average(jitters);
}
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