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𝐒𝐯𝐞𝐥𝐭𝐞 𝐉𝐬 released in 2016 by Rich Harris, revolutionizes UI building by shifting work to compile time, resulting in faster performance and smaller bundle sizes. Its reactive declarations ensure automatic UI updates with state changes, offering optimal performance. 𝐊𝐞𝐲 𝐅𝐞𝐚𝐭𝐮𝐫𝐞𝐬: - Compile-Time Approach: Produces highly optimized code. - Reactive Declarations: Automatic UI updates with state changes. - Simplicity: Clean syntax with minimal boilerplate. - Scoped Styles: CSS applied only to the component. - Built-in Animations: Smooth, declarative animations. SvelteKit provides a comprehensive setup for optimized web applications, including file-based routing, server-side rendering (SSR), static site generation (SSG), and client-side navigation. Svelte Store offers a simple API for reactive state management, enabling easy state sharing across components. Svelte JS offers performance, simplicity, and an intuitive syntax, making it ideal for modern web applications.