/usr/local/lib/node_modules/pm2/node_modules/@pm2/io/build/main/utils
Edit: /usr/local/lib/node_modules/pm2/node_modules/@pm2/io/build/main/utils/EWMA.js (872B)
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const units_1 = require("./units");
class ExponentiallyWeightedMovingAverage {
constructor(timePeriod, tickInterval) {
this._count = 0;
this._rate = 0;
this.TICK_INTERVAL = 5 * units_1.default.SECONDS;
this._timePeriod = timePeriod || 1 * units_1.default.MINUTES;
this._tickInterval = tickInterval || this.TICK_INTERVAL;
this._alpha = 1 - Math.exp(-this._tickInterval / this._timePeriod);
}
update(n) {
this._count += n;
}
tick() {
const instantRate = this._count / this._tickInterval;
this._count = 0;
this._rate += (this._alpha * (instantRate - this._rate));
}
rate(timeUnit) {
return (this._rate || 0) * timeUnit;
}
}
exports.default = ExponentiallyWeightedMovingAverage;