@stryker-mutator/core/dist/src/utils/timer.js

The extendable JavaScript mutation testing framework

export class Timer {
    constructor(now = () => new Date()) {
        this.now = now;
        this.markers = Object.create(null);
        this.start = this.now();
    }
    humanReadableElapsed(sinceMarker) {
        const elapsedSeconds = this.elapsedSeconds(sinceMarker);
        return Timer.humanReadableElapsedMinutes(elapsedSeconds) + Timer.humanReadableElapsedSeconds(elapsedSeconds);
    }
    elapsedSeconds(sinceMarker) {
        const elapsedMs = this.elapsedMs(sinceMarker);
        return Math.floor(elapsedMs / 1000);
    }
    elapsedMs(sinceMarker) {
        const marker = sinceMarker && this.markers[sinceMarker];
        if (marker) {
            return this.now().getTime() - marker.getTime();
        }
        else {
            return this.now().getTime() - this.start.getTime();
        }
    }
    mark(name) {
        this.markers[name] = this.now();
    }
    static humanReadableElapsedSeconds(elapsedSeconds) {
        const restSeconds = elapsedSeconds % 60;
        return this.formatTime('second', restSeconds);
    }
    static humanReadableElapsedMinutes(elapsedSeconds) {
        const elapsedMinutes = Math.floor(elapsedSeconds / 60);
        if (elapsedMinutes === 0) {
            return '';
        }
        else {
            return this.formatTime('minute', elapsedMinutes);
        }
    }
    static formatTime(word, elapsed) {
        const s = elapsed === 1 ? '' : 's';
        const blank = word === 'minute' ? ' ' : '';
        return `${elapsed} ${word}${s}${blank}`;
    }
}
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