Svelte is a free and open-source front end compiler created by Rich Harris and maintained by the Svelte core team members. Svelte applications do not include framework references. Instead, building a Svelte application generates code to manipulate the DOM, which may reduce the size of transferred files as well as give better client startup and run-time performance. Svelte has its own compiler for converting app code into client-side JavaScript at build time. It is written in TypeScript.The Svelte source code is licensed under MIT License and hosted on GitHub.