perf-observer-kit
Version:
A lightweight, flexible library for monitoring web performance metrics including Core Web Vitals, resource loading performance, long tasks, and navigation timing.
14 lines • 460 B
JavaScript
export function calculateTime(end, start) {
return (typeof end === 'number' && typeof start === 'number') ? Math.max(end - start, 0) : 0;
}
/**
* 计算两个时间点之间的差值，确保结果为非负
* @param end 结束时间点
* @param start 开始时间点
* @returns 非负的时间差值
*/
export function calculateTimeDelta(end, start) {
const delta = end - start;
return delta > 0 ? delta : 0;
}
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