{"id":18597,"date":"2024-12-09T09:29:47","date_gmt":"2024-12-09T08:29:47","guid":{"rendered":"https:\/\/pagepro.co\/blog\/?post_type=insight&#038;p=18597"},"modified":"2024-12-09T09:31:10","modified_gmt":"2024-12-09T08:31:10","slug":"react-19-released","status":"publish","type":"insight","link":"https:\/\/pagepro.co\/blog\/react-tldr\/react-19-released\/","title":{"rendered":"React 19 Released"},"content":{"rendered":"<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">React 19 has been fully released on <strong>December 5, 2024<\/strong>. The new update introduces new features aiming to improve both developer experience and application performance:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Actions <\/b><span style=\"font-weight: 400;\">will simplify state updates by allowing asynchronous functions to handle pending states, errors, and optimistic updates automatically.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Server Components <\/b><span style=\"font-weight: 400;\">now enable rendering components on the server, reducing client-side JavaScript bundle sizes and improving load times.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The update introduced <\/span><b>New Hooks <\/b><span style=\"font-weight: 400;\">like `<\/span><b>use`<\/b><span style=\"font-weight: 400;\"> which allows reading resources during render, suspending until promises resolve, <\/span><b>`useFormStatus`<\/b> <span style=\"font-weight: 400;\">to provide access to the status of parent <\/span><span style=\"font-weight: 400;\">&lt;form&gt;<\/span><span style=\"font-weight: 400;\"> elements, and <\/span><b>`useOptimistic`<\/b> <span style=\"font-weight: 400;\">for assisting in rendering optimistic UI updates while asynchronous requests are in progress.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>React Compiler <\/b><span style=\"font-weight: 400;\">transforms React code into optimized JavaScript, potentially improving performance by reducing unnecessary re-renders. <\/span><b>This feature is still in beta<\/b><span style=\"font-weight: 400;\">.\u00a0<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">The long-awaited update includes some improvements as well:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>React DOM Static APIs <\/b><span style=\"font-weight: 400;\">like <\/span><span style=\"font-weight: 400;\">prerender<\/span><span style=\"font-weight: 400;\"> and <\/span><span style=\"font-weight: 400;\">prerenderToNodeStream<\/span><span style=\"font-weight: 400;\"> to <\/span><span style=\"font-weight: 400;\">react-dom\/static<\/span><span style=\"font-weight: 400;\"> are now available. They boost static site generation by waiting for data to load before returning static HTML streams.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The<\/span><b> Enhanced Server-Side Rendering (SSR) <\/b><span style=\"font-weight: 400;\">affects rendering efficiency on the server, leading to faster page loads and better SEO.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">To learn more, read <\/span><a href=\"https:\/\/react.dev\/blog\/2024\/12\/05\/react-19\"><b>full release notes<\/b><\/a><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Find out <\/span><a href=\"https:\/\/pagepro.co\/blog\/how-react-js-can-cut-a-development-cost\/\"><b>how React JS cuts the development cos<\/b><\/a><span style=\"font-weight: 400;\">t<\/span><\/p>\n<p><span style=\"font-weight: 400;\">To stay on top of the latest tech news, <\/span><a href=\"https:\/\/www.frictionlesspost.com\/\"><b>subscribe to Frictionless<\/b><\/a><span style=\"font-weight: 400;\">, a newsletter by our CEO &amp; CGO, Chris Lojniewski.<\/span><\/p>\n","protected":false},"author":49,"featured_media":18598,"template":"","yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>React 19 Released - Pagepro<\/title>\n<meta name=\"description\" content=\"React TL;DR helps you decide which content is worth your time. 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