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DataLoader is a generic utility to be used as part of your application's data fetching layer to provide a consistent API over various backends and reduce requests to those backends via batching and caching.

Calculate the real cost to run your JS app or lib to keep good performance. Show error in pull request if the cost exceeds the limit.

SpeedTest by OpenSpeedTest™ is a Free and Open-Source HTML5 Network Performance Estimation Tool Written in Vanilla Javascript and only uses built-in Web APIs like XMLHttpRequest (XHR), HTML, CSS, JS, & SVG. No Third-Party frameworks or libraries are Required. Started in 2011 and moved to OpenSpeedTest.com dedicated Project/Domain Name in 2013.

Stop That Shit(别再造史了)|面向 Codex/GPT 场景的多平台 Hook + Skill Guard:拦截 AI coding agent 无需求的哈希、校验和与任务范围膨胀。 A multi-platform Hook + Skill Guard for AI coding agents in Codex/GPT workflows: stop unrequested hashes, checksums, and task-scope creep.

Performance-Bookmarklet helps to analyze the current page through the Resource Timing API, Navigation Timing API and User-Timing - requests by type, domain, load times, marks and more. Sort of a light live WebPageTest.

  • webperf
  • bookmarklet
  • navigation-timing
  • resource-timing

Anchor Wallet desktop app for Vaulta (formerly EOS), WAX, Telos and other Antelope networks

  • eosio
  • wallet
  • authenticator
  • eosio-signing-request

Framework allows to perform load testing with Apache Jmeter, view application/server metrics in real-time with Grafana, analyze errors cause with detailed traces for failed requests, compare different test runs in scripted dashboard and perform frontend performance testing with sitespeed.io+webpagetest

A no-dependencies HTTP client library for browsers and Node.js with a promise-based or Node.js-style callback-based API to progress events, text and binary file upload and download, partial response body, request and response headers, status code.

Polyfill for the AbortController DOM API and abortable fetch (stub that calls catch, doesn't actually abort request).

  • javascript
  • polyfill
  • abortcontroller
  • abortsignal

A plugin for Babel v6 which transforms inline styles defined in JavaScript modules into class names so they become available to, e.g. the `className` prop of React elements. While transforming, the plugin processes all JavaScript style definitions found and bundles them up into a CSS file, ready to be requested from your web server.