ARTICLE Next.js is an open-source development framework built on top of Node.js enabling React based web applications functionalities such as server-side rendering and generating static websites. React documentation mentions Next.js among "Recommended Toolchains" advising it to developers as a solution when "building a server-rendered website with Node.js he Next.js framework utilizes Jamstack architecture, which distinguishes between front-end and back-end and allows for efficient front-end development that is independent of any back-end APIs. The framework supports common CSS as well as precompiled Scss and Sass, CSS-in-JS, and styled JSX.In addition, it is built with TypeScript support and smart bundling. The open source transpiler Babel is used to transform and compile code into JavaScript usable by a browser. Webpack, another open-source tool, is used to bundle the modules afterwards. All of these tools are used with npm in a terminal. Sapper is a framework for building web applications of all sizes, with a beautiful development experience and flexible filesystem-based routing.
Unlike single-page apps, Sapper doesn't compromise on SEO, progressive enhancement or the initial load experience — but unlike traditional server-rendered apps, navigation is instantaneous for that app-like feel. If you had to list the characteristics of the perfect Node.js web application framework, you'd probably come up with something like this: 1.It should do server-side rendering, for fast initial loads and no caveats around SEOAs a corollary, your app's codebase should be universal — write once for server and client 2.The client-side app should hydrate the server-rendered HTML, attaching event listeners (and so on) to existing elements rather than re-rendering them 3.Navigating to subsequent pages should be instantaneous etc. Next.js is close to this ideal. If you haven't encountered it yet, I strongly recommend going through the tutorials at learnnextjs.com. Next introduced a brilliant idea: all the pages of your app are files in a your-project/pages directory, and each of those files is just a React component. Everything else flows from that breakthrough design decision. Finding the code responsible for a given page is easy, because you can just look at the file system rather than playing 'guess the component name'. Project structure bike shedding is a thing of the past. But it's not perfect. As churlish as it might be to list the flaws in something so, so good, there are some:
1.Next uses something called 'route masking' to create nice URLs (e.g. /blog/hello-world instead of /post?slug=hello-world). This undermines the guarantee about directory structure corresponding to app structure, and forces you to maintain configuration that translates between the two forms 2.All your routes are assumed to be universal 'pages'. But it's very common to need routes that only render on the server, such as a 301 redirect or an API endpoint that serves the data for your pages, and Next doesn't have a great solution for this. You can add logic to your server.js file to handle these cases, but it feels at odds with the declarative approach taken for pages We can do better!
The compiler-as-framework paradigm shift Svelte introduced a radical idea: what if your UI framework wasn't a framework at all, but a compiler that turned your components into standalone JavaScript modules? Instead of using a library like React or Vue, which knows nothing about your app and must therefore be a one-size-fits-all solution, we can ship highly-optimised vanilla JavaScript. Introducing Sapper The name comes from the term for combat engineers, and is also short for Svelte app maker
Sapper is the answer to that question. Sapper is a Next.js-style framework that aims to meet the eleven criteria at the top of this article while dramatically reducing the amount of code that gets sent to the browser. It's implemented as Express-compatible middleware, meaning it's easy to understand and customise.
The same 'hello world' app that took 204kb with React and Next weighs just 7kb with Sapper. That number is likely to fall further in the future as we explore the space of optimisation possibilities, such as not shipping any JavaScript at all for pages that aren't interactive, beyond the tiny Sapper runtime that handles client-side routing. finally sapper is the next step towards web application. also In conclusion, if I could just make a wish to Nextjs creators it would only be to improve one-way data binding and complex state management due to it, a problem that originated in Reactjs, in the next versions of Nextjs. But still, there are multiple other features in Nextjs in addition to above (like SWR, image optimization, fast refresh, debugging, free hosting on Vercel domain) that do make me believe in the growing community behind it when they say, “Nextjs is the future of Reactjs”. both of them are and will be used in their respective areas. our aim is to make the world a better place THANK YOU sources-https://nextjs.org/docs https://sapper.svelte.dev/docs/
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