Svelte is a modern front-end framework that compiles your code at build time, resulting in smaller and faster applications. It uses a reactive approach to update the DOM, allowing for high performance and a smoother user experience.

ESLint is a linter for JavaScript that analyzes code to detect and report on potential problems and errors, as well as enforce consistent code style and best practices, helping developers to write cleaner, more maintainable code.

A Progressive Web App (PWA) is a type of web application that uses modern web technologies to provide a native app-like experience to users, including offline functionality, push notifications, and device hardware access. PWAs can be installed on a user's home screen and launched like a traditional app, but do not require a separate app store listing or download.

TypeScript is a superset of JavaScript, providing optional static typing, classes, interfaces, and other features that help developers write more maintainable and scalable code. TypeScript's static typing system can catch errors at compile-time, making it easier to build and maintain large applications.