@beenotung/tslib/speed-timer.js

utils library in Typescript

"use strict";
/**
 * timer measuring time per tick (history)
 * without progress (unbounded)
 * */
Object.defineProperty(exports, "__esModule", { value: true });
exports.createSpeedTimer = createSpeedTimer;
function createSpeedTimer(title = 'Speed:') {
    let startTime = 0;
    let pausedTime = 0;
    let pauseStartTime = 0;
    let ticks = 0;
    function start() {
        startTime = Date.now();
    }
    function pause() {
        pauseStartTime = Date.now();
    }
    function resume() {
        const now = Date.now();
        pausedTime += now - pauseStartTime;
        pauseStartTime = 0;
    }
    function tick() {
        ticks++;
    }
    function stats() {
        const now = Date.now();
        let passedTime = now - startTime - pausedTime;
        if (pauseStartTime > 0) {
            passedTime -= now - pauseStartTime;
        }
        return { passedTime, ticks };
    }
    function report() {
        const { passedTime, ticks } = stats();
        const speed = ticks / (passedTime / 1000);
        // eslint-disable-next-line no-console
        console.log(title, speed.toFixed(2));
    }
    return {
        start,
        pause,
        resume,
        tick,
        stats,
        report,
    };
}