Coreremark is a markdown processor powered by plugins part of the unified collective. The project parses and compiles markdown, and lets programs process markdown without ever compiling to HTML (it can though). Powered by plugins to do all kinds of things: check markdown code style, add a table of contents, or compile to man pages. View the project on GitHub or inspect the syntax tree on AST Explo
Emotion is a library designed for writing css styles with JavaScript. It provides powerful and predictable style composition in addition to a great developer experience with features such as source maps, labels, and testing utilities. Both string and object styles are supported. There are two primary methods of using Emotion. The first is framework agnostic and the second is for use with React. Fr
How does your front-end application scale? How do you make sure that the code you’re writing is maintainable 6 months from now? Redux took the world of front-end development by storm in 2015 and established itself as a standard — even beyond the scope of React. At the company where I work, we recently finished refactoring a fairly large React codebase, adding redux instead of reflux. We did it bec
After almost 2 years, 4k commits, over 50 pre-releases, and a lot of help we are excited to announce the release of Babel 7. It's been almost 3 years since the release of Babel 6! There's a lot of moving parts so please bear with us in the first weeks of release. Babel 7 is a huge release: we've made it faster, created an upgrade tool, JS configs, config "overrides", more options for size/minifica
Project-wide configuration babel.config.* files, with the following extensions: .json, .js, .cjs, .mjs, .cts. File-relative configuration .babelrc.* files, with the following extensions: .json, .js, .cjs, .mjs, .cts. .babelrc file, with no extension. package.json files, with a "babel" key. Project-wide configuration New in Babel 7.x, Babel has a concept of a "root" directory, which defaults to th
Today we are excited to announce Jest 23, our largest major release to date! Together with over 100 contributors, we've shipped a ton of features and bug fixes. Thank you to everyone in the community for helping make JavaScript Testing Delightful. We would also like to welcome both Babel and webpack to the Jest community! After converting from Mocha to Jest 23 Beta, webpack saw their total test su
These docs are old and won’t be updated. Go to react.dev for the new React docs. These new documentation pages teach React with Hooks: Quick Start Tutorial react: Hooks Hooks are a new addition in React 16.8. They let you use state and other React features without writing a class. import React, { useState } from 'react'; function Example() { // Declare a new state variable, which we'll call "count
This blog site has been archived. Go to react.dev/blog to see the recent posts. Today we’re releasing React 16.6 with a few new convenient features. A form of PureComponent/shouldComponentUpdate for function components, a way to do code splitting using Suspense and an easier way to consume Context from class components. Check out the full changelog below. React.memo Class components can bail out f
React 16.5 adds support for a new DevTools profiler plugin. This plugin uses React’s experimental Profiler API to collect timing information about each component that’s rendered in order to identify performance bottlenecks in React applications. It will be fully compatible with our upcoming time slicing and suspense features. This blog post covers the following topics: Profiling an application Rea
僕は本当にトムが好き! 取材・文:編集部・市川遥 写真:日吉永遠 イーサン・ハント率いるスパイチームの活躍を描いた人気アクションシリーズ第6弾。2006年公開の第3弾『M:i:III』に初登場して以来どんどん存在感を増し、今やチームに欠かせない存在となったベンジー役のサイモン・ペッグが来日し、トム・クルーズとの友情からおしゃれなファッションの秘密まで語った。 ADVERTISEMENT トムには普通を与えたいQ:ベンジーを演じてもう12年になりますね。 4作もやったなんて信じられない。第3弾に出た時、次も出られるなんて知らなかったから。でも、もう12年もたった。本当に時がたつのは早いよ(笑)。ベンジーは新しいスキルを学んで、有能な熟練のエージェントになっている。ハートの部分では今でも同じ人物だけど、人間として成長しているよね。そして今は想像もしなかった場所にいる。 Q:あなたがシリーズに参
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