npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

perfomance-collect

v0.0.19

Published

前端性能分析,主要基于performance获取各项指标数据

Downloads

0

Readme

前端性能数据采集

主要基于 window.performance 对 firstPaint(FP)、firstContentfulPaint(FCP)、largestContentfulPaint(LCP)、firstInputDelay(FID)、domContentLoaded、resourceLoaded、timeToFirstByte(TTFB)进行数据的计算采集;通过官方工具 tti-polyfill 完成对timeToInteractive(TTI)的采集。

安装

1、npm 安装 npm i perfomance-collect

初始化

在项目的入口文件初始化

import { init } from 'perfomance-collect'

// 两个参数必填,否则会的采集
init({
    env: isOnline ? 'online': 'dev',    // 环境,线上环境可以使用online,其他环境使用dev
    platform_name: 'component-platform-web' // 平台名称
})

采集字段说明

| 字段名称 | 计算方式 | 说明 | | ----------------------------- | :----------------------------------------------------------- | :----------------------------------------------------------- | | firstPaint(FP) | new PerformanceObserver()中通过getEntries()取type=paint 和 name = first-paint | 首次绘制 | | firstContentfulPaint(FCP) | new PerformanceObserver()中通过getEntries()取type=paint 和 name = first-contentful-paint | 首次内容绘制 | | largestContentfulPaint(LCP) | new PerformanceObserver()中通过getEntries()取type=largest-contentful-paint | 最大内容绘制 | | firstInputDelay(FID) | new PerformanceObserver()中通过getEntries()取type=first-input,processingStart - startTime | 首次输入延迟 | | timeToInteractive(TTI) | 通过 tti-polyfill 获取 | 首次可交互时间 | | timeToFirstByte(TTFB) | responseStart - fetchStart | 请求到第一个字节耗时 | | domContentLoaded | domContentLoadedEventEnd - fetchStart | HTML 文档被完全加载和解析完成之后,DOMContentLoaded 事件被触发,无需等待样式表、图像和子框架的完成加载 | | resourceLoaded | loadEventEnd - fetchStart | 页面加载完成的时间 |