The Svelte framework decided to shift the focus from a runtime-based system to a compiler-based system. This can be seen on their website, located at https://svelte.dev. On their front page, it even states the following:
Svelte compiles your code to tiny, framework-less vanilla JS – your app starts fast and stays fast.
By moving the steps from the runtime to the initial compile, we are able to create applications that will download and run fast. But, before we can start looking at this compiler, we need to get it onto our machines. The following steps should enable us to start writing code for Svelte (taken directly from https://svelte.dev/blog/the-easiest-way-to-get-started):
> npx degit sveltejs/template todo
> cd todo
> npm install
> npm run dev
With these commands, we now have a running Svelte application located at localhost:5000...