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Taming requestAnimationFrame and requestIdleCallbackWhen Paul Irish wrote requestAnimationFrame Scheduling For Nerds I’ve decided to create a tiny utility called Scheduled on Browser and this post goal is to quickly explain why that would most likely benefit your current project too. Duplicated schedules are uselessI’ve used requestAnimationFrame since its early prefixed days and in various projec
CodeceptJS is opensource MIT licensed testing framework. Works with your favorite frontend frameworks → Scenario Driven Write acceptance tests from user's perspective. Make tests readable and easy to follow. Driver Agnostic Run your tests via Playwright, WebDriver, Puppeteer, TestCafe, Protractor, Appium. The code is the same. Learn More
DynamoDBのようなスループットを気にする必要があるAPIにアクセスする場合、API実行に実行回数制限をかけたくなる場合があります。npmに沢山ライブラリが公開されていますが、Promise関数にレートリミットを付与したクロージャーを返す実装を書いて使うことにしました。 例えばあるPromiseを返す関数の実行を秒間20回に制限したい場合、次のように書くと設定値を超える回数の実行をsleepで調整します。 rateLimit関数では結果的に引数の関数を実行するクロージャーを返しているので、関数の使い方は変わりません。 // ES2015以外のPromiseライブラリでも動作可 // import Promise from 'bluebird'; const delay = (ms) => { return new Promise((resolve) => { setTimeout(re
It's been an amazing journey to get here and it couldn't have happened without the feedback of thousands of community members, the contributions from hundreds of developers and the guidance of our core team. It's a special day in the history of our project. Today I'm proud to announce the official Aurelia 1.0 Release! What is it?Perhaps you're hearing about Aurelia for the first time today and you
Ember.js 2.7, a minor version release of Ember with backwards compatible changes, is released today. Ember.js 2.8 beta is also being released today. This branch will be released as stable in roughly six weeks and will then go on to be the next LTS release roughly six weeks after that. Changes in Ember.js 2.7 Ember 2.7 introduces one new backward compatible API: Ember.computed.uniqBy In general, th
Popular frontend frameworks - like Angular, React and Vue - use a reactivity system to automatically update the view when the state changes. This is necessary for creating modern web apps and staying sane at the same time. The Observer Utililty is a similar reactivity system, with a modern twist. It uses ES6 Proxies to achieve true transparency and a 100% language coverage. Ideally you would like
Introduction What is this library ? ObjectModel intends to bring strong dynamic type checking to your web applications. Contrary to static type-checking solutions like TypeScript or Flow, ObjectModel can also validate data at runtime: JSON from the server, form inputs, content from local storages, external libraries... By leveraging ES6 Proxies, this library ensures that your variables always matc
regl simplifies WebGL programming by removing as much shared state as it can get away with. To do this, it replaces the WebGL API with two fundamental abstractions, resources and commands: A resource is a handle to a GPU resident object, like a texture, FBO or buffer. A command is a complete representation of the WebGL state required to perform some draw call. To define a command you specify a mix
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